Quick answers
- Does Gary J. Holland accept Medicare assignment?
- Yes. Medicare's clinician data says Gary J. Holland accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Gary J. Holland see?
- In 2024, CMS data shows 46 Original Medicare patients and 807 services for Gary J. Holland. This counts Original Medicare only and measures volume, not quality.
- What is Gary J. Holland's NPI number?
- 1235291931. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Gary J. Holland, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 46 |
|---|---|
| Services billed to Medicare | 807 |
| Different services or procedures | 1 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Chiropractic manipulative treatment, 3-4 spinal regions (98941)807 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol70%
- High blood pressure67%
- Arthritis35%
- Anxiety28%
- Osteoporosis24%
Practice locations
Addresses where Gary J. Holland is enrolled with Medicare (CMS data updated October 2, 2026).
- 31166 Grand River AveFarmington, MI 48336 (248) 477‑6400
Specialties
- Chiropracticprimary
Other chiropractors in Farmington
Clinicians with the same Medicare primary specialty in Farmington, MI — not a recommendation.
Clinician information
| Credential | DC |
|---|---|
| Chiropractic college | Life Chiropractic College |
| Graduation year | 1991 (35 years since chiropractic college) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235291931 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians