DR. GABRIEL B WILLIAMS IV M.D.
NPI 1801024872
Family Medicine in Grand Rapids, MI
About Dr. Gabriel B Williams Iv M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GABRIEL B WILLIAMS IV M.D. (NPI 1801024872) is an individual family medicine provider in Grand Rapids, Michigan, licensed in Michigan (4301094305) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS, is affiliated with Mercy Health Saint Mary's, and is a graduate of Ohio State University College Of Medicine (2009).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Gabriel B Williams Iv M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Gabriel Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Grand Rapids, MI 49503
- Reassigned Medicare billing, Michigan enrollment
- 737 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Health Saint Mary's
Acute Care Hospitals · Grand Rapids, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49507 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRAND RAPIDS, MI 49507
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Gabriel Williams's NPI number?
The NPI number for Gabriel Williams is 1801024872. It was assigned to this individual provider in the NPPES registry on June 29, 2009.
Where is Gabriel Williams located?
Gabriel Williams practices at 1246 Madison Ave SE, Grand Rapids, MI 49507. The listed phone number is (616) 685-8300.
What is Gabriel Williams's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Gabriel Williams enrolled in Medicare?
Yes. Gabriel Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Gabriel Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gabriel Williams reassigns Medicare benefits to Advantage Health/Saint Mary's Medical Group (Grand Rapids, MI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gabriel Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gabriel Williams accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Oscar Insurance Company and Priority Health list Gabriel Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Gabriel Williams affiliated with any hospitals?
According to CMS data, Gabriel Williams is affiliated with Mercy Health Saint Mary's.
When was this NPI record last updated?
The NPPES record for Gabriel Williams was last updated on July 6, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years 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.
# Dr. Gabriel B Williams IV, M.D. · NPI 1801024872
Family Medicine physician in Grand Rapids, Michigan. Individual provider, active in the CMS NPPES registry since June 29, 2009.
## Identity
- **NPI:** 1801024872 (Entity type: Individual)
- **Enumerated:** June 29, 2009
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 4301094305 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1246 MADISON AVE SE, Grand Rapids, MI 49507-1761
- **Phone:** (616) 685-8300
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Advantage Health/Saint Mary's Medical Group (NPI 1457863565, Grand Rapids, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Ohio State University College Of Medicine, class of 2009
## Record status
- **NPPES last updated:** July 6, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1801024872) · Data from the CMS NPPES public registry.