M Frydenborg, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

D27315 Issued in MD

Practice address

900 Caton Ave
Baltimore, MD 21229-5201

Phone

(410) 368-2014

NPI assigned

Jun 2, 2006

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 2

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Physician Assistant

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 and National Provider Directory roles.

• Baltimore Emergency Services II, LLC

  • Emergency Medicine Physician
  • Baltimore, MD
  • NPI 1457319691
  NPD (past)
• Caton Emergency Physicians

  • Emergency Medicine Physician
  • Baltimore, MD
  • NPI 1003829953
  NPD (past)
• Maryland Provo-I Medical Services, PC

  • Emergency Medicine Physician
  • Baltimore, MD
  • NPI 1013002096
  NPD (past)
• Yardmore Emergency Physicians LLC

  • Emergency Medicine Physician
  • Baltimore, MD
  • NPI 1730131657
  NPD (past)
• Mi Primary Care Practice, PC

  • Allergy & Immunology Physician
  • Muncie, IN
  • NPI 1811631641
  NPD (past)
• Muncie Allergy Center. P.S.C.

  • Allergy & Immunology Physician
  • Muncie, IN
  • NPI 1295857621
  NPD (past)

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

{
    "created_epoch": "1149206400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788048000000",
    "number": "1407893860",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "14750 HYSON SCHOOL RD",
            "city": "STEWARTSTOWN",
            "state": "PA",
            "postal_code": "173639427",
            "telephone_number": "717-993-2008",
            "fax_number": "717-706-1060"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "900 CATON AVE",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212295201",
            "telephone_number": "410-368-2014"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FRYDENBORG",
        "first_name": "M",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-06-02",
        "last_updated": "2026-08-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MD",
            "license": "D27315",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "301141100",
            "state": "MD"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS",
            "identifier": "60609101",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Jane Frumin, PHARM.D.
• David Frushour
• Robin Ann Frutchey, LCPC
• Kristin Fry
• Luke Hartwood Fry, OTR/L
• Tamar T. Frydman, LGSW
• Joyce Christine Frye, D.O.,M.B.A.,M.S.C.E.
• Kathryn Grace Frye, OTR/L
• Sara Kate Frye
• Madeleine Fryzek

• Emergency Medicine Physician in Baltimore, MD
• Providers in Baltimore, MD by specialty
• Emergency Medicine Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 30, 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.