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Internal Medicine Providers in Lancaster, OH

Browse 36 Internal Medicine providers listed in NPPES with a practice address in Lancaster, Ohio.

36 Healthcare Providers

How Lancaster compares with the U.S.

Lancaster has 87 clinicians in Internal Medicine per 100,000 residents, about 2.0 times the U.S. rate of 44.

That is 36 active clinicians in Internal Medicine with a practice address in Lancaster, for a population of 41,249.

The Ohio rate is 45 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Internal Medicine in Lancaster listed in the CMS Medicare file (22 of 22) accept Medicare assignment. That is similar to the Ohio share of 97%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

18% of clinicians in Internal Medicine in Lancaster listed in the CMS Medicare file (4 of 22) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the Ohio share of 26%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Lancaster, OH

Source: CMS PECOS
PECOS Enrolled Specialists 32 In Lancaster, OH
Part B Lab & Imaging Eligible 33 Diagnostic Referrals
DME Ordering Eligible 33 Durable Medical Equipment
Home Health Agency Referrals 33 HHA Ordering Eligible
Showing 1โ€“20 of 36 providers
With recent CMS data first, then Aโ€“Z

Dr. Johnny J Abidin , MD

Internal Medicine

Active NPI Status
135 N Ewing St, Suite 305, Lancaster, OH 431303382
Phone: 7406819447
NPI Identifier 1902885403
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Dr. Anastasia Bessas , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1550 Sheridan Dr, Suite 203, Lancaster, OH 431301381
Phone: 7406878397
NPI Identifier 1821403726
View Full Profile

Dr. Martha L Buckley , MD

Internal Medicine

Active NPI Status
1550 Sheridan Dr, Suite 202, Lancaster, OH 431301381
Phone: 7406540232
NPI Identifier 1386733244
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Matthew David Campos

Internal Medicine

Active NPI Status Accepts Medicare Assignment
401 N Ewing St, Lancaster, OH 431303372
Phone: 6145663322
NPI Identifier 1366785503
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Dr. Troy A Edwards , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1043 Pleasantville Rd, Lancaster, OH 431303339
Phone: 7404381339
NPI Identifier 1841274552
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Dr. Majida Bisharah Giancola , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
401 N Ewing St, Lancaster, OH 431303372
Phone: 7406878651
NPI Identifier 1457612061
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Dr. Qazi Faizan Haider , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
135 N Ewing St Ste 304, Lancaster, OH 431303379
Phone: 7406878397
NPI Identifier 1801475504
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Dr. Galen B Hayek , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1800 Granville Pike, Lancaster, OH 431301043
Phone: 7407854678
NPI Identifier 1063874113
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Dr. Brian L Hendrickson , DO

Internal Medicine

Active NPI Status
2405 N Columbus St, Suite 280, Lancaster, OH 431308185
Phone: 7406894470
NPI Identifier 1710961412
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Dr. Leon D Hughes , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
401 N Ewing St, Lancaster, OH 431303372
Phone: 7406878000
NPI Identifier 1083696207
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Dr. Imthiaz Mohammed Khan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2405 N Columbus St Ste 260, Lancaster, OH 431308100
Phone: 7406878397
NPI Identifier 1184244485
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Dr. Anokh Kondru , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
401 N Ewing St, Attn: Community Hospitalists, Lancaster, OH 431303372
Phone: 7402436870
NPI Identifier 1003158031
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Dr. Mark S Lepi , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1548 Sheridan Dr, Ste 200, Lancaster, OH 431301378
Phone: 7406899860
NPI Identifier 1396716155
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Dr. Elaine Marie Lewis , MD

Internal Medicine

Active NPI Status
1147 E Main St, Lancaster, OH 431304056
Phone: 7406879173
NPI Identifier 1851383657
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Gene Thomas Michael

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2401 N Columbus St Ste 260, Lancaster, OH 431308296
Phone: 7406878397
NPI Identifier 1386263614
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Dr. Laura E Morgan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1548 Sheridan Dr, Suite 200, Lancaster, OH 43130
Phone: 7406899860
NPI Identifier 1477524247
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Dr. Michael Joseph Murray , MD

Internal Medicine

Active NPI Status
135 N Ewing St, Suite 305, Lancaster, OH 431303389
Phone: 7406819447
NPI Identifier 1346275104
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Dr. Christopher Scott Nickison , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
135 N Ewing St, Suite 305, Lancaster, OH 431303382
Phone: 7406819447
NPI Identifier 1962481465
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Dr. Douglas A Pope , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1548 Sheridan Dr, Suite 200, Lancaster, OH 43130
Phone: 7406899860
NPI Identifier 1093786857
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Dr. Neelkant Raya , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2658 N Columbus St Ste A, Lancaster, OH 431308796
Phone: 7406546596
NPI Identifier 1760468953
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Frequently Asked Questions about Internal Medicine in Lancaster

How do I check a Internal Medicine practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Ohio licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.