Marilyn Althoff, M.D.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

MA54593 Issued in NJ

Practice address

100 Madison Ave
Morristown, NJ 07960-6136

Phone

(800) 290-5309

Fax

(803) 434-4354

NPI assigned

May 8, 2006

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

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

Emergency Medicine

Education

University of Maryland School of Medicine, 1986

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Morristown Emergency Medical Associates LLCGroup PAC ID 7618136078, 82 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Morristown Medical Center Hospital, Morristown, NJ, CCN 310015

Merit-based Incentive Payment System (MIPS)

Final score

70.76 of 100Reported as individual

Quality

78.69

Improvement activities

0

Cost

74.94

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Morristown Emergency Medical Associates LLC

  • Emergency Medicine Physician
  • Freehold, NJ
  • NPI 1649541087
  Medicare reassignment Care Compare group NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Ahs Hospital Corp.

  • General Acute Care Hospital
  • Morristown, NJ
  • NPI 1053384776
  Care Compare affiliation

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

{
    "created_epoch": "1147046400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1013966217",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7313",
            "city": "COLUMBIA",
            "state": "SC",
            "postal_code": "292027313",
            "telephone_number": "800-290-5309",
            "fax_number": "803-434-4354"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 MADISON AVE",
            "city": "MORRISTOWN",
            "state": "NJ",
            "postal_code": "079606136",
            "telephone_number": "800-290-5309",
            "fax_number": "803-434-4354"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ALTHOFF",
        "first_name": "MARILYN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-08",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NJ",
            "license": "MA54593",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "8363706",
            "state": "NJ"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Dana Almeida
• Vinita Almeida, MD
• Farida Almuslem
• Stacy Ilysa Alper-Lisi, MSW, LCSW
• Elsie Altema
• Matthew Altieri, DO
• Donna Altman
• Rachel Sara Altman, MD
• Laura Margarita Alvarez Florian, MD
• Always Keep Progressing, LLC

• Emergency Medicine Physician in Morristown, NJ
• Providers in Morristown, NJ by specialty
• Emergency Medicine Physician in New Jersey

• 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.
• 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.