Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. John Peter Serlemitsos, MD

Individual provider Internal Medicine Physician · NPI 1861405367

Dr. John Peter Serlemitsos, MD practises Internal Medicine in Crownsville, Maryland. Graduated from University of Maryland School of Medicine in 1984, 42 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
42
Trained at
University of Maryland School of Medicine
Licensed in
MD
In the registry since
2006
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

2033 Penderbrooke Dr
Crownsville, MD 21032-1918 Not confirmed with CMS for 14 years — call before visiting
Phone: (443) 790-2689
Fax: (443) 292-8296
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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 D0032654 (MD)

Record details

NPI number1861405367
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 14, 2006
Last updated in NPPESOctober 31, 2011

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients100
Services billed 437 a service is one billed item, such as a visit, a test or a procedure
Average patient age84

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Amedisys Home Health Care Home health agency · Largo, MD
  • Centerwell Home Health Home health agency · Columbia, MD

Other providers in Crownsville