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Internal Medicine Doctors in Pennsylvania

Data updated monthly · Last refresh October 2026

7,285 Internal Medicine providers practice in Pennsylvania, including 1,249 (17%) offering telehealth. The largest concentration is in Philadelphia. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

7,285providers
1,249telehealth
Philadelphiatop city

Internal Medicine by city in Pennsylvania

Choose a city to see providers there.

Internal Medicine in Philadelphia1,839 providers
Internal Medicine in Pittsburgh748 providers
Internal Medicine in Allentown215 providers
Internal Medicine in Harrisburg183 providers
Internal Medicine in York162 providers
Internal Medicine in Bethlehem158 providers
Internal Medicine in Wynnewood149 providers
Internal Medicine in Scranton133 providers
Internal Medicine in Danville130 providers
Internal Medicine in Hershey122 providers
Internal Medicine in West Reading112 providers
Internal Medicine in Abington107 providers
Internal Medicine in Easton105 providers
Internal Medicine in Erie99 providers
Internal Medicine in Lancaster91 providers
Internal Medicine in Johnstown86 providers
Internal Medicine in Wilkes Barre61 providers
Internal Medicine in West Chester57 providers
Internal Medicine in Sayre50 providers
Internal Medicine in Bryn Mawr49 providers
Internal Medicine in Media47 providers
Internal Medicine in Butler44 providers
Internal Medicine in Reading44 providers
Internal Medicine in Langhorne41 providers

Internal Medicine providers in Pennsylvania

Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Elizabeth O'connor-boll, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 544-3191
Dr. Fariha Sarij, M.D.
Lancaster, PA · No drug or device payments recorded (2025) · Telehealth · (717) 544-0700
Dr. Hyasmine Charles, MD
Lancaster, PA · No drug or device payments recorded (2025) · Telehealth · (717) 295-2323
Dr. Ifeoluwapo Eleyinafe, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 544-8144
Dr. Jaime Moellman, MD
Lancaster, PA · $186 in drug and device payments (2025) · (717) 544-8144
Dr. James Nels, D.O.
Lancaster, PA · No drug or device payments recorded (2025) · (717) 988-0000
Dr. James Spicher, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 327-4694
Dr. Jarol Boan, M.D.
Lancaster, PA · No drug or device payments recorded (2025) · (717) 397-2738
Dr. Jennie Barbieri, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 544-9400
Dr. Jennifer Delutis, M.D.
Lancaster, PA · No drug or device payments recorded (2025) · (717) 544-8144
Dr. J. Mohler, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 393-8131
Dr. Joan Harrold, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 295-3900
Dr. John Derderian, DO
Lancaster, PA · $31 in drug and device payments (2025) · (717) 544-5511
Dr. John King, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 397-2738
Dr. John Scott, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 397-2738
Dr. Joseph Awantang, M.D.
Lancaster, PA · $31 in drug and device payments (2025) · (717) 544-8144
Dr. Joseph Del Castillo, M.D.
Lancaster, PA · $39 in drug and device payments (2025) · (717) 544-5090
Dr. Judy Stone, M.D.
Lancaster, PA · No drug or device payments recorded (2025) · (301) 777-1875
Dr. Kamini Jagdish, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 231-8772
Dr. Kathryn Deprimo, MD, MHA
Lancaster, PA · $37 in drug and device payments (2025) · (717) 544-5511
Dr. Kriti Suwal, MD
Lancaster, PA · $57 in drug and device payments (2025) · (717) 544-8144
Dr. Larien Bieber, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 397-2738
Dr. Lauren Harter
Lancaster, PA · $140 in drug and device payments (2025) · (717) 544-8144
Dr. Lydia Deekollu
Lancaster, PA · $52 in drug and device payments (2025) · (717) 544-8144
Dr. Lydia Slater, DO
Lancaster, PA · No drug or device payments recorded (2025) · Telehealth · (717) 544-3191
Dr. Maria Calderon, MD
Lancaster, PA · No drug or device payments recorded (2025) · Telehealth · (717) 544-3191
Dr. Marianne Kelly, M.D.
Lancaster, PA · No drug or device payments recorded (2025) · (717) 291-4082
Dr. Marilyn D'andrea-spica, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 397-2738
Dr. Marion George, MD
Lancaster, PA · No drug or device payments recorded (2025) · Telehealth · (717) 544-0700
Dr. Mark Simmons, M.D.
Lancaster, PA · No drug or device payments recorded (2025) · (717) 544-3191
Dr. Mary Johnson, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 735-3131
Dr. Maulikkumar Patel, MD
Lancaster, PA · $197 in drug and device payments (2025) · Telehealth · (717) 544-4930
Dr. Maung Win, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 397-2738
Dr. Michael Kroll, M.D.
Lancaster, PA · $39 in drug and device payments (2025) · (717) 544-8144
Dr. Michael Manolas, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 397-2738
Dr. Michelle Jordan, DO
Lancaster, PA · $315 in drug and device payments (2025) · (717) 544-8144
Dr. Nancy Adamopoulos, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 544-8144
Dr. Nguyen Vo, MD
Lancaster, PA · No drug or device payments recorded (2025) · (223) 287-9000
Dr. Nicole Briley, MD
Lancaster, PA · No drug or device payments recorded (2025) · Telehealth · (717) 544-3059
Dr. Olusegun Oyewole, M.D; MPH
Lancaster, PA · No drug or device payments recorded (2025) · (717) 544-8144
Dr. Otitodilichukwu Osadebe, DO
Lancaster, PA · No drug or device payments recorded (2025) · (223) 287-9000
Dr. Otto Lauter, M.D.
Lancaster, PA · No drug or device payments recorded (2025) · (717) 544-8144
Dr. Parineetha Thangada, MD
Lancaster, PA · $36 in drug and device payments (2025) · (717) 544-8144
Dr. Patrick Casey, DO, MS
Lancaster, PA · $16 in drug and device payments (2025) · (717) 544-8144
Dr. Paul Conslato, M.D.
Lancaster, PA · No drug or device payments recorded (2025) · Telehealth · (717) 544-3191
Dr. Peter Moyer, M.D.
Lancaster, PA · No drug or device payments recorded (2025) · (717) 299-6371
Dr. Philip Billoni, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 544-8144
Dr. Philip Jantzi, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 397-2738
Dr. Priyadarshani Sharma, MD
Lancaster, PA · $34 in drug and device payments (2025) · (717) 544-8144
Dr. Robert Martin, MD
Lancaster, PA · No drug or device payments recorded (2025) · (717) 397-2738

Conditions Internal Medicine providers in Pennsylvania commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Internal Medicine providers are in Pennsylvania?

There are 7,285 Internal Medicine providers with active NPI records practicing in Pennsylvania, according to federal NPPES data refreshed monthly.

Do Internal Medicine providers in Pennsylvania offer telehealth?

Yes. 1,249 of the 7,285 Internal Medicine providers in Pennsylvania (about 17%) report offering telehealth services in CMS data.

Which cities in Pennsylvania have the most Internal Medicine providers?

Philadelphia (1,839), Pittsburgh (748), Allentown (215) have the highest concentration of Internal Medicine providers in Pennsylvania.

How many Internal Medicine providers in Pennsylvania received drug or device company payments?

2,354 of 7,285 Internal Medicine providers in Pennsylvania (32%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Internal Medicine providers in Pennsylvania treat?

Internal Medicine providers commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

Do most Internal Medicine Doctors in Pennsylvania work in independent practices or large health systems?

Among 3,500 Internal Medicine Doctors in Pennsylvania enrolled in Medicare, 12% bill through a solo or small practice with fewer than 10 clinicians, 10% through a mid-size group of 10 to 99, and 78% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Internal Medicine Doctors in Pennsylvania work at?

According to CMS facility affiliation records, the Pennsylvania hospitals where the most Internal Medicine Doctors hold privileges are Hospital of Univ of Pennsylvania in Philadelphia; Magee Womens Hospital of Upmc Health System in Pittsburgh; St Lukes Hospital in Bethlehem.

Related reading on HealthcareDiscovery.AI

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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Internal Medicine in Pennsylvania? Get featured.