Dr. Rex L. Mahnensmith, M.D., Preventative Medicine Specialist
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Dr. Rex L. Mahnensmith, M.D.

Adolescent Specialist | Adolescent Medicine

4/5(36)
832 Queen Street Southington Connecticut, 06489
Rating

4/5

About

I am continuing to serve as a Practicing Internal Medicine Physician.   The central focus of my care is the individual.   I aim to listen, to understand, to sort out the active concerns of each individual and to address each.  I will actively address any expressed and discovered concern, and will make referrals as needed.   My care aims to be proactive and preventative - to provide screening and advice and counsel regarding health maintenance and wellness achievement.   My care also will address acute illnesses and established chronic ailments and health concerns.   And my care shall embrace and address complex and high risk burdens of illness.   My Calling as Physician is to provide -- and deliver -- personalized care that carefully considers the individual's burden of illnesses, the health changes that she or he is experiencing, and then aiming to carefully provide effective remediation.   I am to actively consider special concerns and fears and needs as they unfold.   It is with humility that I serve in this chapter of my Vocation -- truly taking time to listen, to hear, to respond, to show empathy, and to make deeply considered and personalized clinical decisions. I pledge to serve carefully and tenderly, expressing value, concerns, hopes, counsel and education to individuals as I deliver particulars of clinical care.

I am blessed with good health myself. I have served for over 30 years as Teaching Physician in three University Medical Centers. My teaching harmonized well with my clinical service and patient care during these years. I served both in outpatient clinics and on hospital units, supervising students and residents in concert with direct care responsibilities. These years were fulfilling. I aimed to deliver best care to patients - and I aimed to model best care as well. I regularly talked to students and residents about the special "Calling" of a physician - the privilege, the responsibilities, the duties, and the opportunities to make a difference to individuals and families.  I received several teaching awards over these years, and I received several "Model Physician Awards" as well.  These years were filled with gratification and positive relationships. I thoroughly enjoyed clinical teaching and I poured my heart and mind and soul into each moment.  I served as Associate and then Full Professor of Medicine at Yale Medical School from 1992 to 2014.  During these years, I also served as "Clinical Advisor" to the Chairman of Medicine and I serve as "Advisor" to National Medicare Dialysis Oversight Committee.  I also served as Medical Director of Dialysis at Yale from 1994 to 2014 and as Regional Medical Director of Dialysis for two National Dialysis Corporations from 2001 through 2006.  In these Medical Director of Dialysis Roles, I was responsible for Quality Assurance and Dialysis Safety in local dialysis clinics in New Haven, CT and I also served as a Regional Educator regarding Quality Assurance for hundreds of dialysis clinic leaders across 30 states in Eastern U.S.  In this capacity, I lead the development of several Clinical Pathways which were implemented within the operations of these dialysis clinics and which resulted in high quality care and excellent clinical outcomes.  

In 2014, I retired from Yale University Professorship as Tenured Professor Emeritus - - and I transitioned to serving individuals and families in Skilled Nursing Facilities, providing General Medical care to many persons with various chronic illnesses. In this context, I had the capacity to really take time with individuals --- to sit and listen, to hear and to understand their concerns, and to deliver personalized care like never before.  In this, I realized my Deepest Calling as a Physician -- primary, holistic care of individuals in their own special contexts, delving deeply into their unique social contexts, knowing deeply their burdens of chronic illnesses, responding promptly to any acute health change that they were experiencing, and addressing their various problems and fears.  I took this step in my career journey so that my wife and I could live in a small town in northern Connecticut where our daughter and our grandchildren lived, so that we could help with their care and familly needs.  This step was very positive. 

In 2015, I transitioned to a Community Health Clinic setting, where I served as Primary Care Physician addressing multiple individuals' needs and concerns. It is with humility that I served in this chapter of my "Vocation" -- truly taking time to listen, to hear, to speak, to show empathy, and to make deeply considered, and personalized clinical decisions - and aiming to catalyze positive change in each person's health and sense of well-being. I served as Chief Medical Officer for the CHC into 2017, then transitioned to a Private Practice Group - DOCS of Connecticut.

Through all, I have truly hoped to be a light that shines, just enough to give warmth and illumination and to be a kindling source for others' whose light is dimming or flickering. I have hoped and continue to hope to confer a true sense of genuine caring to each person that I serve - - caring for the person but also caring about the person -- recognizing and serving within their specific social context.

Serving in this way, serving carefully as a caring physician, has been and is my Calling. I intend to serve thusly as long as God wills and by His Strength and Wisdom.

Professional Honors and Recognition:

Apr 1972 Phi Beta Kappa, Sigma Xi, Omicron Delta Kappa, Denison University
Sep 1972 Teaching Fellow, Denison University
Jun 1976 Lange Award: "Clinical Excellence". Yale

May 1977 Alpha Omega Alpha, Yale
Jun 1977  Berniker Award: "Most exemplary of The Oath of Hippocrates and Maimonides Prayer" Yale
Jun 1979  Kushlan Award: "For clinical excellence and contributing the most to patient care" Yale
Jul  1983 National Kidney Foundation, Research Fellowship Award, Yale 
Jun 1985  Duke University "Special Recognition for Teaching"
Jun 1988  "Teacher of the Year" Brown University
Jun 1988  "Model Physician Award" Brown University
Jun 1989  "Senior Class Outstanding Teacher Award" Brown University 
Jun 1989 "Teacher of the Year", Miriam Hospital, Brown University
Jun 1990 "Model Physician Award", Miriam Hospital, Brown University
Jun 1990 "1990 Senior Citation: Outstanding Physician and Teacher" Brown University
Jun 1991 "Senior Class Outstanding Teacher Award", Brown University
Jun 1991 "Model Physician Award", Miriam Hospital, Brown University 
Jun 1992 "Teacher of the Year", Miriam Hospital, Brown University
Jun 1993 "Teacher of the Year", Yale Internal Medicine
Jun 1993 "Howard M. Spiro Teaching Award", Yale University Affiliated Hospitals
Sep 1997 "Didactic Professor Award", Yale University Physician Associate Program
Sep 2009 "Didactic Professor Award", Yale University Physician Associate Program
Jun 2011 "Emergency Medicine Resident Appreciation Award", Yale Emergency Medicine
Oct 2012  "DaVita Shining Star Award" -- for service excellence in their dialysis clinics
Sep 2013 "Branford-DaVita Service Appreciation Award"

 

Education and Training

MD at Yale School of Medicine

Yale New Haven Hospital Internal Medicine Residency 1980

Yale University Fellowship Nephrology Metabolism 1984

Board Certification

American Board of Internal Medicine

Nephrology (Internal Medicine)

Provider Details

Male English
Dr. Rex L. Mahnensmith, M.D.
Dr. Rex L. Mahnensmith, M.D.'s Expert Contributions
  • Should I go to the ER?

    You definitely need help. Blood work is essential. The choices are going to an Urgent Care Walk In Center for an exam and blood testing. Or going to an ER. Or calling a physician you have seen to ask for blood testing. READ MORE

  • Is chest pain normal after stent placement?

    Not uncommon to have chest ache after stent. Let your cardiologist know. READ MORE

  • Urgent diarrhea?

    Hello, I share your concerns and worries. Your intestines are 'irritable' and 'inflamed.' Precisely why is essential to know. And planning remedies centers on the 'why.' Essential studies include: gastric emptying study; intestinal capsule-scope study; intestinal transit study; CT enterography study; plasma Immunoglobulin IgA level; Immunoglobulin IgE level; colonoscopy if not done; Helicobacter pylori evaluation by Upper Endoscope with biopsy and by Urea Breath Test; serum gastrin level; serum lipase level; liver function tests; food allergy blood test profiles; and then pre-biotic and probiotic capsule intake daily; may need CDIFF test and treatment; may need intestinal antibiotic therapy with xifaxin; may benefit from dicyclomine; diet adjustments to eliminate fats and simple carbs essential also. Rex READ MORE

  • What can you not eat with a heart stent?

    Hi, - BEST meal plans include plenty of vegetables, and very little sugars and mixed fatty meat - i.e. eating complex carbohydrates, primarily from vegetables, and consuming only very lean nonfat protein foods. - Foods to eat daily and faithfully include complex carbohydrates such as quinoa, oatmeal, fruits, vegetables, beans, and lentils; lean meats which have no or very little fat; and NO sugar foods or breads or pastas - DO NOT EAT: - Pizza, pasta, white bread, muffins, potato, juices, soda, cookies, pastries; - Fatty meats, such as bacon hamburger sausage fried chicken, pork with fat, beef with fat - carve out all fat from any beef or pork or chicken or turkey - make it super lean always; - Any saturated fats, which are animal fats, poultry fats, creams, whole milk, ice cream. - Sodas (regular and diet), - Refined sugars, - Processed carbohydrates (breads, cereals, cookies, cakes, most pasta, white polished rice, muffins, bagels) - Trans fats, high-fat animal products = any visible fat solid at room temperature - High-fat dairy products = whole milk, ice cream, heavy cream - High fructose corn syrup = avoid - this is added - Artificial sweeteners = avoid -Fried foods = avoid all fried foods - What To eat: -V8 Fusion Juice - Diet Version - Best Juice -Skim Milk or Soy Milk or Almond Milk -Unsweetened Tea or Coffee -Whole Vegetables -Whole Fruits with no syrup or juices -Lean Meats with NO VISIBLE FAT -Fish NOT FRIED -Whole Grain: High Fiber Oatmeal, Granola, Whole Rice, Beans, Quinoa COUNT Calories - and Grams of Carbs - and GRAMS of FATS EACH DAY - Calorie intake: aim for 1600 kcal per day = NO MORE - Protein intake: aim for 60 grams per day. -Fat Intake: Less than 15 grams per day = NO MORE CREATE MEAL PLANS - PORTION SIZE - FOOD TYPES COUNT CALORIES, CARB Grams, FAT Grams per MEAL Keep notes!! A meal plan is essential. 1.20-25 GRAMS OF CARBS 1.Complex Carbs 2.Not Simple Sugar Carbs 3.Minimal Bread/Pasta/Processed Carb 2.10 GRAMS of FATS 1.Plant Fats MOSTLY 3.30-40 GRAMS of PROTEIN 1.Very lean - Eggs, Fish, White Meat 4.Minimize Simple Carbs 5.Minimize Animal Fats 6.Small-Medium Portion Size is Essential: - The carbohydrates consumed should be low glycemic load and come primarily from vegetables. - The fat and proteins consumed should primarily come from plant sources - or egg - or fish - or very, very lean meats. Learn the Glycemic Load of daily foods. Carbohydrates (carbs) are the primary food that raises blood sugar. Glycemic load indicates how much sugar/glucose is eaten per food!! - Foods with low glycemic load raise blood sugar modestly and thus are better choices for people with diabetes. - Carbohydrates can be classified as either: - Complex carbohydrates - Low Glycemic Load - Simple sugars - High Glycemic Load -- Avoid Complex carbohydrates (low glycemic load foods, or foods that are a part of a prevent diabetes plan) are mostly UNPROCESSED - and WHOLE. Examples of complex carbohydrates, or low glycemic load (index) foods include: - Brown rice - Whole wheat - Quinoa - Steel-cut oatmeal - Vegetables - Fruits - Beans - Lentils Whole grains, such as brown rice, quinoa, and oatmeal are good sources of fiber and nutrients; and have a low glycemic load making them good food choices. Processed food labels make it very confusing to understand whole grains. For example, "whole wheat bread" is made in many different ways, and some are not that different from white bread in its blood sugar impact (glycemic load). The same is true for whole grain pasta, it's still pasta. Whole grains raise blood sugar much less. Choose whole grains that are still in their grain form like brown rice and quinoa, or look at the fiber content on the nutrition label. For example, a "good" whole grain bread will have 3+ grams of fiber per slice.Starchy vegetables should not be eaten daily - or regularly READ MORE

  • Klebsiella Pneumonia found in my throat swab?

    Not compelling to investigate further. It is recovered frequently. GERD can be a risk factor. Smoking is a risk factor. Being around smokers is a risk factor. READ MORE

  • Severe recurring localized headaches?

    These headaches are either focal migraine or vascular cluster headaches. These require preventative management. READ MORE

  • Can headsets cause skull indentations?

    The skull of a mature person is firm and solid bone; the scalp is firm, but able to be compressed just a bit; not more than 1-2 mm; the skin of the scalp can be altered by heavy compression; the skull itself though will not be altered. Rex READ MORE

  • Why do I have persistent coughing weeks after recovering from covid?

    This symptom is not unusual. It is pretty common. The lingering cough reflects bronchial and tracheal lining inflammation which will resolve over another two to three weeks. The virus penetrates a bit and incites inflammation there. Then resolution occurs over weeks. To help yourself, deep breathe often. And drink fluids that are thin and easy to swallow. Sometimes we prescribe prednisone to help resolution. READ MORE

  • Constipation?

    OKAY, hard, constipated stool requires remedies. First, make sure your food intake has 5 servings of fresh fruit and vegetables with natural fiber. Best choices: apples, pears, peaches, prunes, tomatoes, broccoli, asparagus, onion, peppers, and whole-grain, high-fiber oatmeal. Minimize simple sugar foods: doughnuts, white bread, white rice, and potatoes. Minimize animal fats. Be sure you are drinking 8 cups of fluids per day. And be sure you are active: walking is fine. Then, it is helpful and appropriate to take Senna Capsules daily; take 2 each day; it is helpful to have a simple colon cleanse also: can do this with an over-the-counter colon agent. Rex READ MORE

  • I smell fecal for no apparent reason?

    Good evening, The essential remedy is colon cleanse with a product that cleans colons completely. The cleanse agent used pre-colonoscopy is best. Stay hydrated. Then adjust your intake. Prebiotic capsules daily. Probiotic capsules daily. Senna capsule daily. Be sure you have one to two bowel evacuations each day. Minimize simple carbs. Minimize dairy. Minimize animal fat. Best diet is Mediterranean Diet. Minimize soda. No alcohol. Yes, take an acid blocker daily. Whole fruit and whole vegetables are fine. High fiber is best. The basic problem is intestinal overgrowth and stasis and leaky gut syndrome. Get Lectin Shield. READ MORE

  • Lupus and Rheumatoid Arthritis?

    Good evening, Your ailments are substantial as you describe. The autoimmune ailments are able to be modified and remediated with a combination approach. Plaquenil. Steroids. Immune suppressants. Biologics. And massage therapy and physical therapy help. The multi modal therapy approach is essential. READ MORE

  • Low White Blood Cell count?

    Yes, the low white blood cell count is a risk factor for infection from any infectious agent. White blood cells include lymphocytes, which are essential in a protective response to viral infections. The result is an impairment in infection defense. An important consideration is "why" are your white blood cells lower than normal. This is essential to discern. Rex READ MORE

  • Mild Non Specific Urethritis and Conjunctivitis Undiagnosed?

    It is important to get precise and accurate diagnoses. Chlamydia only very rarely infects mouth or lips or eyes. Other agents are more common: mycoplasma, ureaplasma, Herpes, Trichomonas, Enteric Bacteria,GC, and Syphilis can infect urethra plus face tissues. Repeated Smear, culture, DNA probe testing need to be done. And repeat contacts can reinfect. READ MORE

  • What is this?

    This is chest wall pain. It is located in your rib cage. The point source is either rib muscle or rib tendon or tendon sheath or inner rib cage pleural membrane. Reason may be either strain or sprain or inflammation. Fracture not likely. READ MORE

  • Polycystic Kidney Disease?

    She is not well. The precise diagnosis requires an ultrasound imaging of each kidney. Polycystic Kidney Disease is diagnosed ONLY via ultrasound imaging. And laboratory testing to determine serum creatinine and BUN levels is essential. And urinalysis testing to determine if infection is present. Rex Mahnensmith READ MORE

  • Bilateral adrenal adenomatous hyperplasia?

    Hi, The bilateral adrenal enlargement can be a result of extra stimulation from pituitary ACTH. And this may indicate hormone imbalance. So, blood testing for ACTH and cortisol is important. If you have required corticosteroid therapy in prior months, then your own production goes down. READ MORE

  • Medication side effects?

    Sudden cessation of mirtazepine will bring on nausea and cramps and lightheaded feelings. Promethazine is generally well tolerated as an anti-nausea medicine, but can have side effects. READ MORE

  • Burning sensation in groin area. Not STDs or fungal infection?

    You are receiving very good care. The symptoms are consistent with neuralgia. READ MORE

  • Stomach or fibroids?

    Okay. The fibroids are located in your lowest abdominal spaces. They will not cause pressure on your stomach or upper small intestine tissues. Your stomach symptoms are separate in basic causation. Early satiety reflects delayed gastric emptying most commonly. Reflux happens with delayed gastric emptying also and with hiatal hernia and spasms. Special imaging studies are warranted if esophagus and stomach and small intestine READ MORE

  • Should I go to urgent care for abdominal pain?

    Yes. Evaluation is essential. READ MORE

Areas of expertise and specialization

Primary CareGeneral Internal MedicineKidney DiseasesHypertensionPreventative MedicineNutrition and WellnessElder Care and Rest Home CareDiabetes MellitusPre-Diabetic StateOverweight and ObesityMild and Moderate Asthma

Faculty Titles & Positions

  • Professor, Duke University, Brown University, Yale University -

Awards

  • Teacher of the Year.Brown Univ.1988, '89, '90, '91, '92   
  • Outstanding Teacher. Yale Univ. 1993, '97, 2009, 2011   
  • Model Physician. Miriam Hosp. 1988, '90, '91   
  • Dialysis Medical Director Excellence. 2011, 2013   
  • Outstanding Teacher. Duke U. 1985   
  • Leading Physicians of the World 2016 International Association of Health Care Practitioners 
  • Berniker Award - Most Exemplary of Prayer of Maimonides 1977 Yale U 
  • Kushlan Award - Best Bedside Manner and Care 1978 Yale NH Hospital 
  • Chief Resident 1980 Yale U Dept of Medicine 
  • Who's Who Honorary 2017 Continental Who's Who 
  • Marquis Who's Who 2022 Marquis Who's Who 
  • Patient Preferred Award 2021 Patient Preferred Physicians 

Professional Memberships

  • American Medical Association  
  • American Society of Nephrology  

Charities and Philanthropic Endeavors

  • Compassion International Aid Society
  • Send International Missions
  • CRU Campus Missions
  • Ligonier Ministries
  • HAVEN
  • ASPCA
  • Christ Community Church in Collinsville
  • Samaritans' Purse
  • World Vision

Internships

  • Yale New Haven Hospital Internal Medicine

Fellowships

  • Yale University Nephology

Professional Society Memberships

  • AMA and ASN

Favorite professional publications

  • JAMA

Areas of research

Nutritional Care of the Person with Chronic Kidney Disease

Optimizing Diabetic Control

Nutritional Care of Polycystic Kidney Condition.

Pharmacologic Care of Polycystic Kidney Condition.

Impact of Clinical Pathways on Promoting Quality Improvement in Clinic Settings

Dr. Rex L. Mahnensmith, M.D.'s Practice location

DOCS Medical Group

832 Queen Street -
Southington, Connecticut 06489
Get Direction
New patients: 860-863-5288, 860-863-5288
https://docsmedicalgroup.com/docsurgentcare/contact/

DOCS Medical Group

279 Chase Avenue -
Waterbury, Connecticut 06704
Get Direction
New patients: 475-328-0326

Dr. Rex L. Mahnensmith, M.D.'s reviews

(36)
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Patient Experience with Dr. Mahnensmith


4.0

Based on 36 reviews

Dr. Rex L. Mahnensmith, M.D. has a rating of 4 out of 5 stars based on the reviews from 36 patients. FindaTopDoc has aggregated the experiences from real patients to help give you more insights and information on how to choose the best Adolescent Specialist in your area. These reviews do not reflect a providers level of clinical care, but are a compilation of quality indicators such as bedside manner, wait time, staff friendliness, ease of appointment, and knowledge of conditions and treatments.

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