Individual provider · Type 1 NPI

John Marcelis, MD

Geriatric Medicine (Internal Medicine) Physician · Warminster, PA

NPI number 1285667105 Active

Practice location

10000 Anns Choice Way
Warminster, PA 18974-3527

Call (215) 443-3850 Map

Fax (215) 443-3963

Mailing address

5730 Executive Dr Ste 230
Catonsville, MD 21228-1762

Other practice locations

  • 14703 Eagle Vista Dr, Houston, TX 77077-5394 · (281) 249-7100
  • 3000 Essex Rd, Tinton Falls, NJ 07753-2400 · (732) 643-2070

Specialties and licenses

TaxonomyCodeLicense
Geriatric Medicine (Internal Medicine) Physician 207RG0300XNJDCATEMP-025750 (NJ)
Geriatric Medicine (Internal Medicine) Physician Primary 207RG0300XMD045170E (PA)
Internal Medicine Physician 207R00000XMD045170E (PA)

Geriatric Medicine (Internal Medicine) Physician: An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

20 other providers at this address

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About NPI 1285667105

John Marcelis, MD's National Provider Identifier is 1285667105, issued on Jul 7, 2006. The primary taxonomy on file is Geriatric Medicine (Internal Medicine) Physician (207RG0300X), and the practice location is in Warminster, PA. The record was last updated on Feb 26, 2026.