Michael Dillon Gross, MD

Primary specialty

Urology PhysicianTaxonomy code 208800000X

License

25MA13037400 Issued in NJ

Practice address

261 James St Ste 1a
Morristown, NJ 07960-6348

Phone

(973) 539-0333

Fax

(973) 539-8909

NPI assigned

May 8, 2019

Last updated

Oct 7, 2026By the provider in NPPES

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

Medicare fee-for-service enrollment

Enrolled in NJ

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

Specialty

Urology

Education

Other, 2020

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

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": "1557273600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1791331200000",
    "number": "1922663541",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "629 CRANBURY RD FL 2",
            "city": "EAST BRUNSWICK",
            "state": "NJ",
            "postal_code": "088164096",
            "telephone_number": "732-390-7750"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "261 JAMES ST STE 1A",
            "city": "MORRISTOWN",
            "state": "NJ",
            "postal_code": "079606348",
            "telephone_number": "973-539-0333",
            "fax_number": "973-539-8909"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "333 US Highway 46 Ste 103",
            "address_purpose": "LOCATION",
            "city": "Mountain Lakes",
            "state": "NJ",
            "postal_code": "070461741",
            "country_code": "US",
            "telephone_number": "973-537-5557",
            "fax_number": "973-537-5547",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "16 Eden Ln",
            "address_purpose": "LOCATION",
            "city": "Whippany",
            "state": "NJ",
            "postal_code": "079811402",
            "country_code": "US",
            "telephone_number": "973-240-3000",
            "fax_number": "973-947-9055",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GROSS",
        "first_name": "MICHAEL",
        "middle_name": "DILLON",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2019-05-08",
        "last_updated": "2026-10-07",
        "certification_date": "2026-10-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "NJ",
            "license": "25MA13037400",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• John Griffin, M.D.
• Sarah Griffin, RD
• Rebecca Griffith, MD
• Joscelin J Grizzetti, PT
• Jeanne Gross-Burstein, LCSW
• Matthew Aaron Grossman, M.D.
• Grow ABA Services
• Laura Grow, PH.D., BCBA-D
• James Grubel, R.PH.
• Alexa Gruber, D.D.S.

• Urology Physician in Morristown, NJ
• Providers in Morristown, NJ by specialty
• Urology Physician in New Jersey

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 7, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.