Nicholas Jon Gregory, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

MD.54554 Issued in AL

Practice address

181 Hillcrest Rd
Mobile, AL 36608-5306

Phone

(251) 341-3800

Fax

(251) 660-6333

NPI assigned

Mar 25, 2024

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in AL

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1711324800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784678400000",
    "number": "1568212652",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2451 UNIVERSITY HOSPITAL DR RM 714",
            "city": "MOBILE",
            "state": "AL",
            "postal_code": "366172300",
            "telephone_number": "251-471-7000",
            "fax_number": "251-471-7096"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "181 HILLCREST RD",
            "city": "MOBILE",
            "state": "AL",
            "postal_code": "366085306",
            "telephone_number": "251-341-3800",
            "fax_number": "251-660-6333"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2451 University Hospital Dr Rm 714",
            "address_purpose": "LOCATION",
            "city": "Mobile",
            "state": "AL",
            "postal_code": "366172300",
            "country_code": "US",
            "telephone_number": "251-471-7000",
            "fax_number": "251-471-7096",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GREGORY",
        "first_name": "NICHOLAS",
        "middle_name": "JON",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2024-03-25",
        "last_updated": "2026-07-22",
        "certification_date": "2026-07-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "AL",
            "license": "L.6305R",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "AL",
            "license": "MD.54554",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Phillip Nelson Greer, DMD
• Rebekah Kate Greer, PT, DPT
• Robert Albright Greer Jr., D.O.
• Sara Greer
• Tara L Greer, LICSW
• David Albert Gremse, M.D.
• Katherine Virginia Grette, MD
• Panayiotis P Grevenitis, M.D.
• Emily Smith Grezaffi, M.D.
• Matthew David Gribble, MD

• Emergency Medicine Physician in Mobile, AL
• Providers in Mobile, AL by specialty
• Emergency Medicine Physician in Alabama

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 22, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.