Natalie Sirianni, MD

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

4301513735 Issued in MI

Practice address

2009 Holton Rd
Muskegon, MI 49445-1578

Phone

(231) 291-8399

NPI assigned

May 28, 2020

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

Family Practice

Education

Other, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Spectrum Health Primary Care PartnersGroup PAC ID 4587568647, 2,283 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Spectrum Health Hospital, Grand Rapids, MI, CCN 230038
• Corewell Health Gerber Hospital Hospital, Fremont, MI, CCN 231338
• Trinity Health Muskegon Hospital Hospital, Muskegon, MI, CCN 230066

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: nsirianni1151552@direct.hfhs.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 Care Compare group 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.

• Mercy Health Partners

  • General Acute Care Hospital
  • Muskegon, MI
  • NPI 1831132133
  Care Compare affiliation
• Newaygo County General Hospital Association

  • Critical Access Hospital
  • Fremont, MI
  • NPI 1063836963
  Care Compare affiliation
• 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": "1590624000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754870400000",
    "number": "1407470156",
    "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": "2009 HOLTON RD",
            "city": "MUSKEGON",
            "state": "MI",
            "postal_code": "494451578",
            "telephone_number": "231-291-8399"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIRIANNI",
        "first_name": "NATALIE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-05-28",
        "last_updated": "2025-08-11",
        "certification_date": "2025-08-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "MI",
            "license": "4301513735",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "nsirianni3234124@epic00.corewelldirect.org",
            "affiliation": "N",
            "address_1": "2009 Holton Rd",
            "city": "Muskegon",
            "state": "MI",
            "country_code": "US",
            "postal_code": "494451578",
            "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": "2009 Holton Rd",
            "city": "Muskegon",
            "state": "MI",
            "country_code": "US",
            "postal_code": "494451578",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Gloria Fay Sims, OT
• Barbara Rose Sines
• Kathleen Singer
• Harkamal Singh, MD
• Hikmet H Sipahi II, MD
• Corrie A Sjoblom, LMSW
• Kirsten J Sjostrand, D.O.
• John F Skallerup, M.D.
• Christopher Skazalski, DPT
• Deborah Skinner, NP

• Family Medicine Physician in Muskegon, MI
• Providers in Muskegon, MI by specialty
• Family Medicine Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 11, 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.