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

Dr. Mario E Nicholson, MD

Individual provider Internal Medicine Physician · NPI 1689735144

Dr. Mario E Nicholson, MD is an Internal Medicine in Hyattsville, Maryland. Graduated from Icahn School of Medicine at Mount Sinai in 1983, 43 years ago. Practices with Patient First Maryland Medical Group PLLC, a 255-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in District of Columbia and Maryland.

Years since qualifying
43
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
DC, MD
In the registry since
2006
Specialties on file
2
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

6525 Belcrest Rd Ste 160
Hyattsville, MD 20782-2016
Phone: (301) 209-6155
Fax: (301) 209-6206
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 9000 Woodyard Rd, Clinton, MD 20735-4206 — (240) 546-3428
  • 6 Garrett Ave, La Plata, MD 20646-5959 — (301) 539-5100

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence D41747 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD21652 (DC)

Record details

NPI number1689735144
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 12, 2006
Last updated in NPPESJanuary 22, 2025
Certification dateJanuary 22, 2025
Mailing address2101 East Jefferson Street, Ppqa Medicare Compliance Unite 4 West Kaiser Permanente, Rockville, MD 20852-4908

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 1983 (43 years in practice)
Group practice Patient First Maryland Medical Group Pllc — 255 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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