Hallie Grotenstein, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

018721 Issued in NY

Practice address

210 E 64TH St
New York, NY 10065-7471

Phone

(212) 434-2730

NPI assigned

Jul 15, 2015

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

Medicare fee-for-service enrollment

Enrolled in NY

Eligible to order & refer

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

Green means eligible to order or refer.

Enrollment records 1

Merit-based Incentive Payment System (MIPS)

Final score

79.13 of 100Reported as group

Quality

61.43

Improvement activities

40

Cost

79.81

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

Networks

• Healthfirst Medicare Network H5989
• Healthfirst Medicare Network H1722
• Healthfirst Medicare Network H3359
• Healthfirst Medicare Network H9678

Interoperability endpoints

• Direct secure messaging: hleavitt69913@northwell.direct-ci.com
• FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/
• FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/

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.

• Trustees of Columbia University in the City of New York

  • Surgery Physician
  • New York, NY
  • NPI 1508266347
  Medicare reassignment NPD
• Memorial Urgent Care Group

  • Emergency Medicine Physician
  • New York, NY
  • NPI 1053364539
  Medicare reassignment
• Trustees of Columbia University in the City of New York

  • Internal Medicine Physician
  • New York, NY
  • NPI 1699289488

  Physician Assistant

  NPD

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

{
    "created_epoch": "1436918400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758240000000",
    "number": "1265816722",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "210 E 64TH ST",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100657471",
            "telephone_number": "847-302-5297"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "210 E 64TH ST",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100657471",
            "telephone_number": "212-434-2730"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GROTENSTEIN",
        "first_name": "HALLIE",
        "name_prefix": "Mrs.",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-07-15",
        "last_updated": "2025-09-19",
        "certification_date": "2025-09-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "NY",
            "license": "018721",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Patricia Grosvenor-Bunn, PHYSICIAN ASSISTANT
• Judith Armour Grosz, LCSW
• Rey Grosz, RN
• Dylan Grote, MD
• David Grotell
• Howard Maxey Groth, LMSW
• William Groth, CSW
• Mia Grottola
• Kevin Groudan, MD
• Grounded Acupuncture, PLLC

• Physician Assistant in New York, NY
• Providers in New York, NY by specialty
• Physician Assistant in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 19, 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.