Ai Yamasaki, MD

Primary specialty

Pediatric Hospice and Palliative Medicine PhysicianTaxonomy code 2080H0002X

License

4301506968 Issued in MI

Practice address

25 Michigan St NE Ste 2100
Grand Rapids, MI 49503-2526

Phone

(616) 391-8842

Fax

(616) 391-2978

NPI assigned

Jul 2, 2019

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in MA, MI2 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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ayamasaki2611455@direct.trinity-health.org
• Direct secure messaging: ayamasaki36982@direct.bostonchildrens.org
• Direct secure messaging: ayamasaki247310@epic00.shdirect.org

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.

• Spectrum Health Primary Care Partners

  • Internal Medicine Physician
  • Grand Rapids, MI
  • NPI 1235188673
  Medicare reassignment NPD
• Children'S Hospital Pediatric Associates, Inc

  • Pediatrics Physician
  • Boston, MA
  • NPI 1457306664
  Medicare reassignment NPD
• Spectrum Health Primary Care Partners

  • Internal Medicine Physician
  • Grand Rapids, MI
  • NPI 1689499667
  NPD
• Children'S Hospital Corporation

  • Children's Hospital
  • Boston, MA
  • NPI 1710087127
  NPD (past)

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

{
    "created_epoch": "1562025600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775174400000",
    "number": "1376105122",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 MICHIGAN ST NE # MC845",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032560"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "25 MICHIGAN ST NE STE 2100",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032526",
            "telephone_number": "616-391-8842",
            "fax_number": "616-391-2978"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "YAMASAKI",
        "first_name": "AI",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-07-02",
        "last_updated": "2026-04-03",
        "certification_date": "2026-04-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MI",
            "license": "4301506968",
            "primary": false
        },
        {
            "code": "2080H0002X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Hospice and Palliative Medicine",
            "state": "MI",
            "license": "4301506968",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ayamasaki247310@epic00.shdirect.org",
            "affiliation": "N",
            "address_1": "35 Michigan St NE Ste 5301",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "495032530",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicarr02.spectrumhealth.org/EpicFHIR/api/FHIR/R4/",
            "affiliation": "N",
            "address_1": "35 Michigan St NE Ste 5301",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "495032530",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Olivia Pei Xue, CTRS
• Stuart A Yablon, M.D.
• Rylie Yager
• Annie M Yakes, LMSW
• Bharath Yalavarthi
• Aretha Yamusah, DDS MPH
• Amanda Yang, MD
• James Yang
• Sheng an Yang, LMSW
• Gabrielle Helana Yanoski

• Pediatric Hospice and Palliative Medicine Physician in Grand Rapids, MI
• Providers in Grand Rapids, MI by specialty
• Pediatric Hospice and Palliative Medicine Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 3, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.