John Neil Margolis, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

D25430 Issued in MD

Practice address

13952 Baltimore Avenue
Laurel, MD 20707

Phone

(301) 490-1990

Fax

(301) 490-8750

NPI assigned

Nov 4, 2005

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Male

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)

Enrolled

Credentials

Doctor of Medicine

State licenses

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.

• DRS Maggin Margolis Moy and Tadikonda LLC

  • Internal Medicine Physician
  • Laurel, MD
  • NPI 1154400372
  Authorized official Same address or phone
• Frederick Health Hospital Inc

  dba Frederick Health Hospital

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)

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

{
    "created_epoch": "1131062400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1346231669",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "13952 BALTIMORE AVENUE",
            "city": "LAUREL",
            "state": "MD",
            "postal_code": "20707",
            "telephone_number": "301-490-1990",
            "fax_number": "301-490-8750"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "13952 BALTIMORE AVENUE",
            "city": "LAUREL",
            "state": "MD",
            "postal_code": "20707",
            "telephone_number": "301-490-1990",
            "fax_number": "301-490-8750"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARGOLIS",
        "first_name": "JOHN",
        "middle_name": "NEIL",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-04",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MD",
            "license": "D25430",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Abu Mansaray
• Mohamed S Mansour, PT, MS, DPT
• Elango Manyi Eleanor Espe Ak, HOME HEALTH AIDE
• Julienne Manyi, HHA
• Eva Wilda Marcelus
• Marie a Dobyns MD PA
• Jacqueline Irene Marlette-Boras, R.D., LDN
• Marley Transportation LLC
• Marlena Marsh, SLP
• Kelvina Marshall

• Internal Medicine Physician in Laurel, MD
• Providers in Laurel, 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.