Quick answers
- Does Robert J. Zendler Ii accept Medicare assignment?
- Yes. Medicare's clinician data says Robert J. Zendler Ii 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 Robert J. Zendler Ii see?
- In 2024, CMS data shows 451 Original Medicare patients and 1,389 services for Robert J. Zendler Ii. This counts Original Medicare only and measures volume, not quality.
- What is Robert J. Zendler Ii's NPI number?
- 1669686515. 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 Robert J. Zendler Ii, 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 | 451 |
|---|---|
| Services billed to Medicare | 1,389 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)332 services
- Imaging of retina (92134)201 services
- Established patient complete exam of visual system (92014)170 services
- Exam of visual field with extended testing (92083)135 services
- Removal of cataract with insertion of prosthetic lens (66984)96 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 blood pressure75%
- High cholesterol75%
- Arthritis50%
- Diabetes31%
- Chronic kidney disease29%
- Ischemic heart disease27%
Practice locations
Addresses where Robert J. Zendler Ii is enrolled with Medicare (CMS data updated October 2, 2026).
- 5300 Gateway CtrFlint, MI 48507 (810) 720‑9111
Group practices
Medicare enrollment lists Robert J. Zendler Ii as a member of this group (CMS data updated October 2, 2026).
- Michigan Vision Institute PLLC6 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Flint
Clinicians with the same Medicare primary specialty in Flint, MI — not a recommendation.
Other clinicians in Michigan Vision Institute PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | At Still University Of Health Sciences, College Of Osteo Med, Kirksville |
| Graduation year | 1984 (42 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669686515 |
| 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