Michael O'Halleran, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

323856 Issued in NY

Practice address

121 Dekalb Ave
Brooklyn, NY 11201-5425

Phone

(718) 250-6917

NPI assigned

Mar 22, 2016

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

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in NY, WA2 enrollments

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 2

Specialty

Pediatric Medicine

Education

Other, 2016

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

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

Interoperability endpoints

• Direct secure messaging: mohalleran216829@direct.tgh.org
• Direct secure messaging: mohalleran22654@prd.direct.tbh.org
• FHIR API: https://epicproxy.et0761.epichosted.com/FHIRProxy/api/FHIR/R4/

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.

• TBHC Pediatric Services PC

  • Pediatrics Physician
  • Brooklyn, NY
  • NPI 1861628091

  Multi-Specialty

  Medicare reassignment NPD
• Multicare Health System

  • Neurological Surgery Physician
  • Tacoma, WA
  • NPI 1497766638
  Medicare reassignment
• Tampa General Hospital

  • General Acute Care Hospital
  • Tampa, FL
  • NPI 1124558929
  NPD
• The Brooklyn Hospital Center

  • General Acute Care Hospital
  • Brooklyn, NY
  • NPI 1326046467
  NPD (past)
• Wesley Medical Center LLC

  • General Acute Care Hospital
  • Wichita, KS
  • NPI 1447299649
  NPD (past)

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

{
    "created_epoch": "1458604800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1745971200000",
    "number": "1043672835",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "121 DEKALB AVE",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112015425"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "121 DEKALB AVE",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112015425",
            "telephone_number": "718-250-6917"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'HALLERAN",
        "first_name": "MICHAEL",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2016-03-22",
        "last_updated": "2025-04-30",
        "certification_date": "2025-04-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Pediatrics",
            "state": "NY",
            "license": "323856",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "110435200",
            "state": "FL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Sinead O'Donoghue-Knickerbocker, LCSW
• Karen O'Donoghue, DPT
• Salem O'Dowd
• Hannah O'Grady, MSW
• Jeanine O'Hagan, N.P.
• Anne C O'Halloran, LMSW
• Claire O'Hanlon
• Anthony Armando O'Hara
• Cassie Greene O'Hara, CNM
• Deborah O'Hara, RN

• Pediatrics Physician in Brooklyn, NY
• Providers in Brooklyn, NY by specialty
• Pediatrics Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 30, 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.