Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Mark Linwood Simmons, MD

Individual provider Internal Medicine Physician · NPI 1619959285

Dr. Mark Linwood Simmons, MD is an Internal Medicine in Lancaster, Pennsylvania. Graduated from Pennsylvania State University College of Medicine in 1995, 31 years ago. Practices with Lancaster General Medical Group, a 582-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
31
Trained at
Pennsylvania State University College of Medicine
Licensed in
PA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2110 Harrisburg Pike Ste 100
Lancaster, PA 17601-2644
Phone: (717) 544-3191
Fax: (717) 544-3637
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD064373L (PA)

Record details

NPI number1619959285
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 18, 2005
Last updated in NPPESSeptember 6, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolPENNSYLVANIA STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1995 (31 years in practice)
Group practice Lancaster General Medical Group — 582 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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