Phyllis E Nicholson, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

D0028429 Issued in MD

Practice address

18101 Prince Philip Drive
Montgomery General Hospital
Olney, MD 20832

Phone

(301) 774-8900

Fax

(301) 570-8574

NPI assigned

Jan 4, 2006

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

Credentials

Doctor of Medicine

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Mid-Atlantic Critical Care Services,L.L.C.

  • Critical Care Medicine (Internal Medicine) Physician
  • Takoma Park, MD
  • NPI 1164455853
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1136332800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1609854389",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1300 PICCARD DRIVE",
            "address_2": "STE 202",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208504303",
            "telephone_number": "301-921-7900",
            "fax_number": "301-921-7915"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18101 PRINCE PHILIP DRIVE",
            "address_2": "MONTGOMERY GENERAL HOSPITAL",
            "city": "OLNEY",
            "state": "MD",
            "postal_code": "20832",
            "telephone_number": "301-774-8900",
            "fax_number": "301-570-8574"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NICHOLSON",
        "first_name": "PHYLLIS",
        "middle_name": "E",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-01-04",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MD",
            "license": "D0028429",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Marie Anne Ngolo Ntsede
• Mary Njeri Ngugi, LCMFT
• Shannon Denham Nguy, CRNP
• My-Linh Nguyen, MD
• Lisa Nicholas, CRNP
• Mekdes Niguse, PA
• Kirstie Ninan
• Rafael J Nollie, CSA/LPN
• Jennifer M Novick, ED.M.
• NRH Regional Rehab at Olney, Inc. (MedStar Health Physical Therapy at Olney)

• Internal Medicine Physician in Olney, MD
• Providers in Olney, MD by specialty
• Internal Medicine Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.