Quick answers
- Does Park L. Hsieh accept Medicare assignment?
- Yes. Medicare's clinician data says Park L. Hsieh 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 Park L. Hsieh see?
- In 2024, CMS data shows 27 Original Medicare patients and 99 services for Park L. Hsieh. This counts Original Medicare only and measures volume, not quality.
- What is Park L. Hsieh's NPI number?
- 1730239559. 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 Park L. Hsieh, 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 | 27 |
|---|---|
| Services billed to Medicare | 99 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Photography of content of eyes (92285)19 services
- Photography of the retina (92250)16 services
- Exam of visual field with limited testing (92081)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 cholesterol75%
- High blood pressure74%
Practice locations
Addresses where Park L. Hsieh is enrolled with Medicare (CMS data updated October 2, 2026).
- 2704 Pinole Valley RdPinole, CA 94564 (510) 369‑0092
- 3333 Quality DrRancho Cordova, CA 95670 (916) 858‑5656
Group practices
Medicare enrollment lists Park L. Hsieh as a member of this group (CMS data updated October 2, 2026).
- First Optometric Care of Northern California PC19 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in First Optometric Care of Northern California PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | State University Of New York - State College Optometry |
| Graduation year | 2004 (22 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1730239559 |
| 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