Quick answers
- Does Tara M. Oosterbaan accept Medicare assignment?
- Yes. Medicare's clinician data says Tara M. Oosterbaan 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 Tara M. Oosterbaan see?
- In 2024, CMS data shows 214 Original Medicare patients and 562 services for Tara M. Oosterbaan. This counts Original Medicare only and measures volume, not quality.
- What is Tara M. Oosterbaan's NPI number?
- 1225011430. 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 Tara M. Oosterbaan, 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 | 214 |
|---|---|
| Services billed to Medicare | 562 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient complete exam of visual system (92014)145 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)116 services
- Exam of visual field with extended testing (92083)83 services
- Imaging of optic nerve (92133)82 services
- Imaging of retina (92134)76 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 cholesterol71%
- High blood pressure70%
- Arthritis49%
- Diabetes30%
- Ischemic heart disease24%
- Chronic kidney disease23%
Practice locations
Addresses where Tara M. Oosterbaan is enrolled with Medicare (CMS data updated October 2, 2026).
- 999 Washington AveHolland, MI 49423 (616) 396‑2316
Group practices
Medicare enrollment lists Tara M. Oosterbaan as a member of this group (CMS data updated October 2, 2026).
- Holland Eye Clinic PC6 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Holland
Clinicians with the same Medicare primary specialty in Holland, MI — not a recommendation.
Other clinicians in Holland Eye Clinic PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | University Of Michigan Medical School |
| Graduation year | 2001 (25 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225011430 |
| 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