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© 2026 NPI Telehealth

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CMS Source

Informational purposes only — not medical advice. Always consult a professional. Data updated weekly. Read full disclaimer.

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Online Internal Medicine Doctors | Telehealth & Virtual Visits | NPI Telehealth | NPI Telehealth
SPECIALTY DISCOVERY ACTIVE 2026

Internal Medicine.

Find and book verified Internal Medicine specialists. Access NPI credentials, office locations, and virtual care availability.

VERIFIED SPECIALISTS

Active medical practitioners in Internal Medicine clinical focus.

62,216 ENTRIES FOUND
NPI: 1144238668
VIRTUAL ACTIVE

Christina Mary Nicolaidis, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Portland, OR
Columbia University Vagelos College of Physicians and Surgeons (1993)
20+ Years Exp.
ACCESS PROFILE
NPI: 1144238296
VIRTUAL ACTIVE

Angela Mallory, P.A.

Internal Medicine

CREDENTIALS VERIFIED 2026
Sacramento, CA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1144234832
VIRTUAL ACTIVE

Nuzhat Aziz Ahmad, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Philadelphia, PA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1144234634
VIRTUAL ACTIVE

Michael Louis Molinaro, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Glen Ridge, NJ
RUTGERS SCHOOL OF DENTAL MEDICINE (2000)
20+ Years Exp.
ACCESS PROFILE
NPI: 1144232554
VIRTUAL ACTIVE

James Melvin Martinson, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Portland, OR
Medical College of Wisconsin (2005)
20+ Years Exp.
ACCESS PROFILE
NPI: 1144232406
VIRTUAL ACTIVE

Aaron Smuckler

Internal Medicine

CREDENTIALS VERIFIED 2026
Pittsburgh, PA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1144232349
VIRTUAL ACTIVE

Mani Mahdyoon, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Lodi, CA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1144232265
VIRTUAL ACTIVE

Michael Thomas Johnston, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Dallas, TX
UT Health San Antonio Joe R. and Teresa Lozano Long School of Medicine (1995)
20+ Years Exp.
ACCESS PROFILE
NPI: 1144230996
VIRTUAL ACTIVE

Tse-Ling Fong, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Los Angeles, CA
Keck School of Medicine of USC (1982)
20+ Years Exp.
ACCESS PROFILE
NPI: 1144230897
VIRTUAL ACTIVE

Melanie Ngochan Phan, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Van Nuys, CA
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1144230400
VIRTUAL ACTIVE

Ramon M Castillo, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Miami, FL
OFFICIAL REGISTRY DATA
20+ Years Exp.
ACCESS PROFILE
NPI: 1144230335
VIRTUAL ACTIVE

DOMINIC K LEUNG, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
CHICAGO, IL
OHIO STATE UNIVERSITY COLLEGE OF MEDICINE (1994)
20+ Years Exp.
ACCESS PROFILE
NPI: 1144230202
VIRTUAL ACTIVE

Demming Morton Ward, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Salisbury, NC
WAKE FOREST UNIVERSITY SCHOOL OF MEDICINE (1974)
20+ Years Exp.
ACCESS PROFILE
NPI: 1144230053
VIRTUAL ACTIVE

Sajot S Grewal, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Corte Madera, CA
Rutgers New Jersey Medical School (1997)
20+ Years Exp.
ACCESS PROFILE
NPI: 1144229261
VIRTUAL ACTIVE

Calvin D Cochran, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Kansas City, MO
UNIVERSITY OF MISSOURI, KANSAS CITY, SCHOOL OF MEDICINE (1988)
21+ Years Exp.
ACCESS PROFILE
NPI: 1144227869
VIRTUAL ACTIVE

LUIS M MERCADO, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
SAN GERMAN, PR
UNIVERSITY CENTRAL DEL CARIBE ESCUELA DE MEDICINA (1988)
21+ Years Exp.
ACCESS PROFILE
NPI: 1144227802
VIRTUAL ACTIVE

Jesus Manuel R. Arcenas, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Jacksonville, FL
OFFICIAL REGISTRY DATA
21+ Years Exp.
ACCESS PROFILE
NPI: 1144227570
VIRTUAL ACTIVE

Steven J. Bielski, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Geneva, IL
Loyola University Chicago Stritch School of Medicine (1986)
21+ Years Exp.
ACCESS PROFILE
NPI: 1144227372
VIRTUAL ACTIVE

Rebecca Abundis, D.O

Internal Medicine

CREDENTIALS VERIFIED 2026
Monterey, CA
COLLEGE OF OSTEO MED OF THE PACIFIC AT POMONA (1992)
21+ Years Exp.
ACCESS PROFILE
NPI: 1144227182
VIRTUAL ACTIVE

Neha Sheetal Shah, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Stanford, CA
University of Florida College of Medicine (1999)
21+ Years Exp.
ACCESS PROFILE
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Why Choose a Verified Internal Medicine Specialist?

Selecting a Internal Medicine is a personal decision that impacts your long-term health. Whether you are seeking treatment for a specific condition or looking for a second opinion, we provide access to a verified list of practicing specialists.

We recommend reviewing clinical background, years of practice, and verified patient experiences before scheduling your visit. Many Internal Medicines now offer telehealth services, allowing you to receive expert medical advice from the comfort of your home.

Institutional Data Integrity

Every provider on NPI Telehealth is verified against the National Plan and Provider Enumeration System (NPPES). We ensure that you connect with licensed, active professionals who meet federal clinical standards.

100% VERIFIED CREDENTIALS
REAL-TIME REGISTRY UPDATES