Joel Harry Hassman, M.D.

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

D0040942 Issued in MD

Practice address

8258 Veterans Hwy Ste 13
Millersville, MD 21108-1564

Phone

(410) 757-2077

NPI assigned

Mar 29, 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

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: No
• Medical equipment: Yes
• Home health: No
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Specialty

Psychiatry

Education

University of Maryland School of Medicine, 1989

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

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 and National Provider Directory roles.

• Frederick Health Hospital Inc

  dba Frederick Health Hospital

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)
• Psychotherapy Services Associates, LLC

  • Mental Health Counselor
  • Frederick, MD
  • NPI 1902802432
  NPD (past)

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

{
    "created_epoch": "1143590400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750896000000",
    "number": "1669433777",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8258 VETERANS HWY STE 13",
            "city": "MILLERSVILLE",
            "state": "MD",
            "postal_code": "211081564",
            "telephone_number": "410-757-2077"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8258 VETERANS HWY STE 13",
            "city": "MILLERSVILLE",
            "state": "MD",
            "postal_code": "211081564",
            "telephone_number": "410-757-2077"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HASSMAN",
        "first_name": "JOEL",
        "middle_name": "HARRY",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-03-29",
        "last_updated": "2025-06-26",
        "certification_date": "2025-06-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "MD",
            "license": "D0040942",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Harbour House, Inc
• Anthony Terrell Hardnett, D.C.
• Grayling Ellis Harrison Jr.
• Nicole Diane Harrison, LMSW
• Latoya Harvey
• Healing Wellness Massage LLC
• Summer Hecht, LCSW-C
• Katherine Heines, LCSW-C
• Shannon Heller, LGPC
• Helpful Hearts Healthcare Staffing, LLC

• Psychiatry Physician in Millersville, MD
• Providers in Millersville, MD by specialty
• Psychiatry Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 26, 2025; 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.