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© 2026 NPI Telehealth

US Registry Operational
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: 1518258227
VIRTUAL ACTIVE

Marissa Nicole Meissner, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Danville, PA
UT Health San Antonio Joe R. and Teresa Lozano Long School of Medicine (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518258003
VIRTUAL ACTIVE

LU YOU, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
NEW YORK, NY
OTHER (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518257138
VIRTUAL ACTIVE

Jayson Alan Weir, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Carson City, NV
OFFICIAL REGISTRY DATA
15+ Years Exp.
ACCESS PROFILE
NPI: 1518257013
VIRTUAL ACTIVE

Natalie M. Sanchez, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Coral Gables, FL
NYU Grossman School of Medicine (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518256866
VIRTUAL ACTIVE

Meghan Johnston

Internal Medicine

CREDENTIALS VERIFIED 2026
Bozeman, MT
University of Washington School of Medicine (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518255421
VIRTUAL ACTIVE

Wei Chen

Internal Medicine

CREDENTIALS VERIFIED 2026
Bronx, NY
Renaissance School of Medicine at Stony Brook University (2008)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518255124
VIRTUAL ACTIVE

Anshuman Das, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Valparaiso, IN
UNIVERSITY OF CHICAGO, PRITZKER SCHOOL OF MEDICINE (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518254630
VIRTUAL ACTIVE

Pedro Arturo Villablanca Spinetto, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Detroit, MI
OFFICIAL REGISTRY DATA
15+ Years Exp.
ACCESS PROFILE
NPI: 1518254499
VIRTUAL ACTIVE

Cassandra Ann Kimber, DO

Internal Medicine

CREDENTIALS VERIFIED 2026
Kansas City, KS
KANSAS CITY UNIVERSITY OF MED & BIOSCIENCES, COLLEGE OF OSTEO MED (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518253699
VIRTUAL ACTIVE

Byron Dominic Baptist, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Saint Louis, MO
OFFICIAL REGISTRY DATA
15+ Years Exp.
ACCESS PROFILE
NPI: 1518252881
VIRTUAL ACTIVE

Sayeed Khalillullah, M.D

Internal Medicine

CREDENTIALS VERIFIED 2026
Phoenix, AZ
OFFICIAL REGISTRY DATA
15+ Years Exp.
ACCESS PROFILE
NPI: 1518252576
VIRTUAL ACTIVE

Michelle Annette Yu, M.D., PH.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
San Francisco, CA
OFFICIAL REGISTRY DATA
15+ Years Exp.
ACCESS PROFILE
NPI: 1518252204
VIRTUAL ACTIVE

Matthew Charles Baker, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Stanford, CA
Harvard Medical School (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518251701
VIRTUAL ACTIVE

Harman Chawla, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Fremont, CA
OFFICIAL REGISTRY DATA
15+ Years Exp.
ACCESS PROFILE
NPI: 1518251370
VIRTUAL ACTIVE

Dane H Dougherty, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Springfield, OR
University of Texas Medical Branch (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518250828
VIRTUAL ACTIVE

William Patrick Mazur, M.D.

Internal Medicine

CREDENTIALS VERIFIED 2026
Wilmington, DE
OFFICIAL REGISTRY DATA
15+ Years Exp.
ACCESS PROFILE
NPI: 1518250653
VIRTUAL ACTIVE

Halley Tsai

Internal Medicine

CREDENTIALS VERIFIED 2026
Honolulu, HI
Albert Einstein College of Medicine (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518250588
VIRTUAL ACTIVE

Susan Elizabeth Friedman, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Hilliard, OH
Ohio State University College of Medicine (2011)
15+ Years Exp.
ACCESS PROFILE
NPI: 1518250133
VIRTUAL ACTIVE

Maath Alani, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Allen Park, MI
OFFICIAL REGISTRY DATA
15+ Years Exp.
ACCESS PROFILE
NPI: 1518233881
VIRTUAL ACTIVE

Margaret Mary Duffy, MD

Internal Medicine

CREDENTIALS VERIFIED 2026
Allentown, PA
RUTGERS SCHOOL OF DENTAL MEDICINE (2012)
14+ 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