ALEX M GEIGER MD, MPH
NPI 1124530316
Internal Medicine in Grand Rapids, MI

Q: What is Alex Geiger's NPI number?

The NPI number for Alex Geiger is 1124530316. It was assigned to this individual provider in the NPPES registry on October 29, 2017.

Q: What is Alex Geiger's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Alex Geiger was last updated on August 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since October 29, 2017PECOS Enrolled

275 MICHIGAN ST NE, GRAND RAPIDS, MI 49503(616) 391-3777 Get Directions Write a Review

NPPES record last updated: August 17, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 17, 2026, Jun 9, 2025, Jun 5, 2025 and 3 more (6 updates tracked since 2017).

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About Alex M Geiger Md, Mph NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALEX M GEIGER MD, MPH (NPI 1124530316) is an individual internal medicine provider in Grand Rapids, Michigan, licensed in Michigan (4301517885) and active in the NPI registry since October 2017. He is enrolled in Medicare PECOS and is a graduate of University Of Arizona College Of Medicine - Phoenix (2018).

NPPES Registry Identity

NPI1124530316

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameALEX M GEIGERCredential: MD, MPH

Location Address275 MICHIGAN ST NEGrand Rapids, MI 49503-2531

Mailing Address100 Michigan St Ne, Mc 845Grand Rapids, MI 49503-2560

Phone(616) 391-3777

Sole ProprietorNo

Medical School CMSUniversity Of Arizona College Of Medicine - PhoenixGraduated 2018

Enumeration DateOctober 29, 2017

Last NPPES UpdateAugust 17, 20266 updates tracked since enumeration

NPPES CertifiedAugust 17, 2026

✔ NPI 1124530316 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in MI · 4301517885

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedPediatricsTaxonomy 208000000X · License 4301517885 (MI)

275 MICHIGAN ST NE, Grand Rapids, MI 49503

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, CareSource and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alex M Geiger Md, Mph is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5991050940

PECOS Enrollment IDI20220727001854, I20250723002041

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Alex Geiger reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Spectrum Health Hospitals

0.2 mi

Hospitalist

100 MICHIGAN ST NE, MC-907
Grand Rapids, MI 49503

Reassigned Medicare billing, Michigan enrollment
405 clinicians in this Medicare group

NPI 1558407189 (616) 774-7377

Healthnet, Inc.

220 mi

Federally Qualified Health Center (FQHC)

2855 N KEYSTONE AVE, STE 100
Indianapolis, IN 46218

Reassigned Medicare billing, Indiana enrollment
95 clinicians in this Medicare group

NPI 1780634964 (317) 957-2300

Chase Brexton Health Services, Inc.

535 mi

Federally Qualified Health Center (FQHC)

1111 NORTH CHARLES STREET
Baltimore, MD 21201

Reassigned Medicare billing, Maryland enrollment
213 clinicians in this Medicare group

NPI 1588606305 (410) 837-2050

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$126.15 typical visit price

range $54.34 – $166.68

Typical copayment $31.53 (range $13.58 – $41.67)

Most-billed visit code 99204

Established Patient

$96.44 typical visit price

range $17.09 – $135.40

Typical copayment $24.11 (range $4.27 – $33.85)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PHILLIP RICHTER PARAS M.D.

Pediatrics