Quick answers
- Does Gary L. Tamez accept Medicare assignment?
- Yes. Medicare's clinician data says Gary L. Tamez 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 L. Tamez see?
- In 2024, CMS data shows 43 Original Medicare patients and 171 services for Gary L. Tamez. This counts Original Medicare only and measures volume, not quality.
- What is Gary L. Tamez's NPI number?
- 1265422356. 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 L. Tamez, 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 | 43 |
|---|---|
| Services billed to Medicare | 171 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 65 |
Most frequent services
- Blood glucose (sugar) test performed by hand-held instrument (82962)57 services
- Hemoglobin a1c level (83036)42 services
- Urine microalbumin (protein) analysis (82044)12 services
- Creatinine level to test for kidney function or muscle injury (82570)12 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 pressure65%
- Diabetes60%
- Arthritis40%
- Anxiety35%
- Ischemic heart disease33%
Practice locations
Addresses where Gary L. Tamez is enrolled with Medicare (CMS data updated October 2, 2026).
- 3884 Monitor RdBay City, MI 48706 (989) 671‑2000
Group practices
Medicare enrollment lists Gary L. Tamez as a member of this group (CMS data updated October 2, 2026).
- Great Lakes Bay Health Centers86 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Bay City
Clinicians with the same Medicare primary specialty in Bay City, MI — not a recommendation.
Other clinicians in Great Lakes Bay Health Centers
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 1983 (43 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265422356 |
| 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