Gary S. Fischer
Experienced in Folate Deficiency

Dr. Gary S. Fischer

Internal Medicine
UPMC
UPMC General Internal Medicine
3459 5th Avenue, UPMC Montefiore, 9 South, 
Pittsburgh, PA 
On Staff At
Offers Telehealth

Experienced in Folate Deficiency
UPMC
UPMC General Internal Medicine
3459 5th Avenue, UPMC Montefiore, 9 South, 
Pittsburgh, PA 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

Gary Fischer, MD, is certified in internal medicine and clinical informatics by the American Board of Internal Medicine. He is affiliated with UPMC Shadyside and UPMC Presbyterian. He completed his fellowship at the University of Pittsburgh School of Medicine, residency at Massachusetts General Hospital - Harvard Medical School, and medical degree at Harvard Medical School.

Dr. Fischer is rated as an Experienced provider by MediFind in the treatment of Folate Deficiency. His top areas of expertise are Obesity, Hypertension, Seasonal Affective Disorder (SAD), and Type 2 Diabetes (T2D).

His clinical research consists of co-authoring 37 peer reviewed articles. MediFind looks at clinical research from the past 15 years.

Specialties
Internal Medicine
Licenses
Specialist in PA
Board Certifications
American Board Of Preventive Medicine
American Board Of Internal Medicine
Fellowships
University of Pittsburgh School of Medicine
Hospital Affiliations
Magee Womens Hospital Of Upmc Health System
Upmc Presbyterian Shadyside
Upmc St Margaret
Upmc East
Upmc Mercy
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Change Healthcare
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Cigna
  • EPO
  • HMO
  • PPO
Gateway Health Plan
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE SNP
  • OTHER MEDICARE PART D
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
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  • STATE MEDICAID
Medicare
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  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE PART D
PA Health and Wellness
  • HMO
  • MANAGED MEDICAID PLAN
Premera Blue Cross
  • INSURANCE PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
  • PPO
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
UPMC
  • EPO
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 13 Less Insurance Carriers -

Locations

UPMC General Internal Medicine
3459 5th Avenue, UPMC Montefiore, 9 South, Pittsburgh, PA 15213
Call: 412-755-3903

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


37 Total Publications

Factors Associated With Initiation of Sodium-Glucose Cotransporter 2 Inhibitor and Glucagon-Like Peptide 1 Receptor Agonists in Patients With Diabetes and Kidney Disease: A Post Hoc Analysis of the Kidney CHAMP Trial.
Factors Associated With Initiation of Sodium-Glucose Cotransporter 2 Inhibitor and Glucagon-Like Peptide 1 Receptor Agonists in Patients With Diabetes and Kidney Disease: A Post Hoc Analysis of the Kidney CHAMP Trial.
Journal: Diabetes spectrum : a publication of the American Diabetes Association
Published: November 19, 2025
View All 37 Publications
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Ashim K. Dayalan
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Internal Medicine
Distinguished in Folate Deficiency
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Pittsburgh, PA 
 (7.0 miles away)
412-847-9987
Languages Spoken:
English, Hindi
See accepted insurances
Offers Telehealth

Ashim K. Dayalan, MD, specializes and is certified in internal medicine by the American Board of Internal Medicine. He practices at GMA/Dayalan and Associates, Family Medicine and is affiliated with UPMC Passavant. Dr. Dayalan completed his residency at St Francis Medical Center and medical degree at Bangalore Medical College & Research Institute. Dr. Dayalan is rated as a Distinguished provider by MediFind in the treatment of Folate Deficiency. His top areas of expertise are Multiple Carboxylase Deficiency, Vitamin B12 Deficiency Anemia, Folate Deficiency, Hip Replacement, and Pacemaker Implantation.

Distinguished in Folate Deficiency
Dr. Francis R. Colangelo
Internal Medicine
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Internal Medicine

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3824 Northern Pike, Suite 200, 
Monroeville, PA 
 (9.2 miles away)
412-380-2800
Languages Spoken:
English
See accepted insurances
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Francis Colangelo is a primary care provider, practicing in Internal Medicine in Monroeville, Pennsylvania. Dr. Colangelo is rated as a Distinguished provider by MediFind in the treatment of Folate Deficiency. His top areas of expertise are Type 2 Diabetes (T2D), High Cholesterol, Hypertension, and Familial Hypertension.

Prashan H. Thiagarajah
Distinguished in Folate Deficiency
Dr. Prashan H. Thiagarajah
Internal Medicine
Distinguished in Folate Deficiency
Dr. Prashan H. Thiagarajah
Internal Medicine

GMA/Dayalan And Associates, Family Medicine

3601 McKnight East Drive, 
Pittsburgh, PA 
 (7.0 miles away)
412-847-9987
Languages Spoken:
English, Spanish
See accepted insurances
Offers Telehealth

Prashan Thiagarajah, MD, specializes and is certified in internal medicine by the American Board of Internal Medicine. He practices at GMA/Dayalan and Associates, Family Medicine and is affiliated with UPMC Passavant. Dr. Thiagarajah completed his residency at Allegheny General Hospital and medical degree from Ross University School of Medicine. Dr. Thiagarajah is rated as a Distinguished provider by MediFind in the treatment of Folate Deficiency. His top areas of expertise are Multiple Carboxylase Deficiency, Folate Deficiency, Vitamin B12 Deficiency Anemia, Endoscopy, and Pacemaker Implantation.

VIEW MORE FOLATE DEFICIENCY DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Fischer's expertise for a condition
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        • Experienced
        • Congenital Cardiovascular Shunt
          Dr. Fischer is
          Experienced
          . Learn about Congenital Cardiovascular Shunt.
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        • Crohn's Disease
          Dr. Fischer is
          Experienced
          . Learn about Crohn's Disease.
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        • Erythema Nodosum
          Dr. Fischer is
          Experienced
          . Learn about Erythema Nodosum.
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        • Familial Hypertension
          Dr. Fischer is
          Experienced
          . Learn about Familial Hypertension.
          See more Familial Hypertension experts
        • Folate Deficiency
          Dr. Fischer is
          Experienced
          . Learn about Folate Deficiency.
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        • Glucocorticoid-Remediable Aldosteronism
          Dr. Fischer is
          Experienced
          . Learn about Glucocorticoid-Remediable Aldosteronism.
          See more Glucocorticoid-Remediable Aldosteronism experts
        View All 16 Experienced Conditions
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