William Mak, D.O.

Primary specialty

Pediatric Emergency Medicine (Pediatrics) PhysicianTaxonomy code 2080P0204X

License

279661 Issued in NY

Practice address

Suny at Stony Brook Department of Pediatrics
HSC T-11 / 040
Stony Brook, NY 11794-8111

Phone

(631) 444-2020

Fax

(631) 444-2894

NPI assigned

May 4, 2012

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in NY, FL3 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 3

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Networks

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

Interoperability endpoints

• Direct secure messaging: wmak5588379@nychhc.direct-ci.com

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.

• Clifton Springs Sanitarium Co

  dba Clifton Springs Hospital and Clinic

  • General Acute Care Hospital
  • Clifton Springs, NY
  • NPI 1366505463
  Medicare reassignment NPD
• Newark Wayne Community Hospital

  • General Acute Care Hospital
  • Newark, NY
  • NPI 1770671182
  Medicare reassignment NPD
• North Shore-Lij Medical PC

  dba NHPP Cardiology at Great Neck

  • Urology Physician
  • Great Neck, NY
  • NPI 1053688572
  Medicare reassignment NPD
• Rochester General Hospital

  dba Rochester General Medical Groups

  • Family Medicine Physician
  • Rochester, NY
  • NPI 1356412712

  Pediatrics

  Medicare reassignment NPD
• Emergency Medicine Services of FL, LLC

  • Emergency Medicine Physician
  • Aventura, FL
  • NPI 1043917180
  Medicare reassignment NPD
• Lifespire, Inc.

  • Clinic/Center
  • New York, NY
  • NPI 1497709166
  NPD
• Newark Wayne Community Hospital

  • General Acute Care Hospital
  • Newark, NY
  • NPI 1346369212
  NPD
• Rochester General Hospital

  • General Acute Care Hospital
  • Rochester, NY
  • NPI 1255360517
  NPD
• Rochester General Hospital

  dba Genesee Health Services

  • Internal Medicine Physician
  • Rochester, NY
  • NPI 1760557656

  Pediatrics

  NPD

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

{
    "created_epoch": "1336089600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741219200000",
    "number": "1811256258",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "SUNY AT STONY BROOK DEPARTMENT OF PEDIATRICS",
            "address_2": "HSC T-11 / 040",
            "city": "STONY BROOK",
            "state": "NY",
            "postal_code": "117948111",
            "telephone_number": "631-444-2020",
            "fax_number": "631-444-2894"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "SUNY AT STONY BROOK DEPARTMENT OF PEDIATRICS",
            "address_2": "HSC T-11 / 040",
            "city": "STONY BROOK",
            "state": "NY",
            "postal_code": "117948111",
            "telephone_number": "631-444-2020",
            "fax_number": "631-444-2894"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1425 Portland Ave",
            "address_purpose": "LOCATION",
            "city": "Rochester",
            "state": "NY",
            "postal_code": "146213011",
            "country_code": "US",
            "telephone_number": "585-922-2000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAK",
        "first_name": "WILLIAM",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-05-04",
        "last_updated": "2025-03-06",
        "certification_date": "2025-03-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080P0204X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Emergency Medicine",
            "state": "NY",
            "license": "279661",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "NY",
            "license": "279661",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tauhid Mahmud, MD, MPH
• Vincenza Cristina Maiello
• Evan Robert Mair, M.D.
• Allison Beth Maisano, LPN
• Nomrota Majumder
• Alexandra Makara, DDS
• Rany R Makaryus, MD
• David Makowski, PH.D.
• Andrew Carter Maleson, M.D.
• Ajay Malhotra, MD

• Pediatric Emergency Medicine (Pediatrics) Physician in Stony Brook, NY
• Providers in Stony Brook, NY by specialty
• Pediatric Emergency Medicine (Pediatrics) Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 6, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.