Crystal Ritsema, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

4301108709 Issued in MI

Practice address

275 Michigan St NE
Grand Rapids, MI 49503-2531

Phone

(616) 397-3777

Fax

(616) 391-3755

NPI assigned

Apr 14, 2009

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

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in MI

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

Internal Medicine

Education

Wayne State University School of Medicine, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Spectrum Health HospitalsGroup PAC ID 8921904764, 161 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Spectrum Health Hospital, Grand Rapids, MI, CCN 230038

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: critsema119298@epic00.shdirect.org
• Direct secure messaging: critsema119298@epic00.corewelldirect.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 Hospitals

  • Hospitalist Physician
  • Grand Rapids, MI
  • NPI 1558407189

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Spectrum Health Primary Care Partners

  • Internal Medicine Physician
  • Grand Rapids, MI
  • NPI 1235188673
  Medicare reassignment NPD
• Spectrum Health Hospitals

  • General Acute Care Hospital
  • Grand Rapids, MI
  • NPI 1922090554
  NPD
• Spectrum Health Primary Care Partners

  • Internal Medicine Physician
  • Grand Rapids, MI
  • NPI 1689499667
  NPD

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

• Pennock Hospital

  • Critical Access Hospital
  • Hastings, MI
  • NPI 1932695525
  Care Compare affiliation
• Spectrum Health Hospitals

  • General Acute Care Hospital
  • Grand Rapids, MI
  • NPI 1922090554
  Care Compare affiliation

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

{
    "created_epoch": "1239667200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1736726400000",
    "number": "1093958548",
    "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": "275 MICHIGAN ST NE",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032531",
            "telephone_number": "616-397-3777",
            "fax_number": "616-391-3755"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RITSEMA",
        "first_name": "CRYSTAL",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-04-14",
        "last_updated": "2025-01-13",
        "certification_date": "2025-01-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MI",
            "license": "4301108709",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "critsema119298@epic00.shdirect.org",
            "affiliation": "N",
            "address_1": "25 Michigan St NE Ste 2100",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "49503",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicarr02.spectrumhealth.org/EpicFHIR/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "25 Michigan St NE Ste 2100",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "49503",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Manasvi Pinnamaneni Ritchie, MD
• Rite Aid of Michigan Inc
• Rite Aid of Michigan Inc
• Rite Aid of Michigan Inc
• Candie Ritsema
• Danielle Ritsema, LLBSW
• Emily Ritsema, MD
• Erin Ritsema
• Jeffrey J Ritsema, OD
• Ashley Rittase

• Internal Medicine Physician in Grand Rapids, MI
• Providers in Grand Rapids, MI by specialty
• Internal Medicine Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 13, 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.