DR. GARRET JUSTIN HOLCOMB M.D.
NPI 1679987549
Obstetrics & Gynecology in Chicago, IL
About Dr. Garret Justin Holcomb M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GARRET JUSTIN HOLCOMB M.D. (NPI 1679987549) is an individual obstetrics & gynecology provider in Chicago, Illinois, licensed in Michigan (4301114188) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, is affiliated with Mclaren Macomb, and is a graduate of University Of Cincinnati College Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
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. Garret Justin Holcomb 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 Reassignments
3Medicare enrollment records show Garret Holcomb reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Flushing, MI 48433
- Reassigned Medicare billing, Michigan enrollment
- 416 clinicians in this Medicare group
Southfield, MI 48034
- Reassigned Medicare billing, Michigan enrollment
- 407 clinicians in this Medicare group
Mount Clemens, MI 48043
- Reassigned Medicare billing, Michigan enrollment
- 188 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mclaren Macomb
Acute Care Hospitals · Mount Clemens, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60637 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
CHICAGO, IL 60637
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 Garret Holcomb's NPI number?
The NPI number for Garret Holcomb is 1679987549. It was assigned to this individual provider in the NPPES registry on June 18, 2014.
Where is Garret Holcomb located?
Garret Holcomb practices at 5841 S Maryland Ave Mc 2050, Chicago, IL 60637. The listed phone number is (773) 834-0598.
What is Garret Holcomb's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Garret Holcomb enrolled in Medicare?
Yes. Garret Holcomb 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 organizations bill Medicare for Garret Holcomb's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Garret Holcomb reassigns Medicare benefits to 3 organizations: Mclaren Medical Group (Flushing, MI), Vhs Physicians Of Michigan (Southfield, MI) and Mclaren Macomb (Mount Clemens, MI). Each 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 Garret Holcomb's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Garret Holcomb accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 2 other insurers list Garret Holcomb 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 Garret Holcomb affiliated with any hospitals?
According to CMS data, Garret Holcomb is affiliated with Mclaren Macomb.
When was this NPI record last updated?
The NPPES record for Garret Holcomb was last updated on May 14, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Garret Justin Holcomb, M.D. · NPI 1679987549
Obstetrics & Gynecology physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since June 18, 2014.
## Identity
- **NPI:** 1679987549 (Entity type: Individual)
- **Enumerated:** June 18, 2014
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 4301114188 (Michigan)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 5841 S MARYLAND AVE, MC 2050, Chicago, IL 60637-1447
- **Phone:** (773) 834-0598
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Mclaren Medical Group (NPI 1053458091, Flushing, MI); Vhs Physicians Of Michigan (NPI 1073827101, Southfield, MI); Mclaren Macomb (NPI 1528002532, Mount Clemens, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Cincinnati College Of Medicine, class of 2014
## Record status
- **NPPES last updated:** May 14, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1679987549) · Data from the CMS NPPES public registry.