Alex M Geiger, MD, MPH

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

4301517885 Issued in MI

Practice address

275 Michigan St NE
Grand Rapids, MI 49503-2531

Phone

(616) 391-3777

NPI assigned

Oct 29, 2017

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

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in IN, MD2 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

Internal MedicineAlso: Pediatric Medicine

Education

University of Arizona College of Medicine, 2018

Medicare assignment

May accept Medicare assignment

Group practices

Chase Brexton Health Services IncGroup PAC ID 5395644835, 119 clinicians

Healthnet IncGroup PAC ID 7214840933, 77 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: alex.geiger@hn.eclinicaldirectplus.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.

• Chase Brexton Health Services, Inc.

  • Federally Qualified Health Center (FQHC)
  • Baltimore, MD
  • NPI 1588606305
  Medicare reassignment Care Compare group NPD
• Healthnet, Inc.

  • Federally Qualified Health Center (FQHC)
  • Indianapolis, IN
  • NPI 1780634964
  Medicare reassignment Care Compare group NPD
• Chase Brexton Health Services, Inc.

  • Federally Qualified Health Center (FQHC)
  • Columbia, MD
  • NPI 1376589309
  NPD
• Major Hospital

  • General Acute Care Hospital
  • Shelbyville, IN
  • NPI 1174555692
  NPD (past)

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

{
    "created_epoch": "1509235200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786924800000",
    "number": "1124530316",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 MICHIGAN ST NE",
            "address_2": "MC 845",
            "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": "616-391-3777"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GEIGER",
        "first_name": "ALEX",
        "middle_name": "M",
        "credential": "MD, MPH",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-10-29",
        "last_updated": "2026-08-17",
        "certification_date": "2026-08-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MI",
            "license": "4301517885",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MI",
            "license": "4301517885",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicarr02.spectrumhealth.org/EpicFHIR/api/FHIR/R4/",
            "affiliation": "N",
            "address_1": "275 Michigan St NE",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "495032531",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ageiger3628237@epic00.corewelldirect.org",
            "affiliation": "N",
            "address_1": "275 Michigan St NE",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "495032531",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Jennifer Lynne Gehl, M.S., CCC-SLP
• Richard Gehl, LMSW ACSW
• Alison Gehle, M.D.
• Kerrie Gehrt
• Julee Geib, R.N.
• Tammy Geiger, PHARM.D.
• Erika S Geile, DIETICIAN, RD
• Eric Geiser, MD
• Jeffrey A Geissler, PA-C
• Thomas Geissler, M.D.

• 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 Aug 17, 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.
• 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.