Quick answers
- Does Pei Shan Tan accept Medicare assignment?
- Yes. Medicare's clinician data says Pei Shan Tan 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 Pei Shan Tan see?
- In 2024, CMS data shows 12 Original Medicare patients and 19 services for Pei Shan Tan. This counts Original Medicare only and measures volume, not quality.
- What is Pei Shan Tan's NPI number?
- 1932837168. 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 Pei Shan Tan, 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 | 12 |
|---|---|
| Services billed to Medicare | 19 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Blood glucose (sugar) test performed by hand-held instrument (82962)16 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%
Practice locations
Addresses where Pei Shan Tan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1501 E Holt Ave, Suite APomona, CA 91767 (909) 623‑3600
- 437 N Euclid AveOntario, CA 91762 (909) 988‑2555
Group practices
Medicare enrollment lists Pei Shan Tan as a member of this group (CMS data updated October 2, 2026).
- Unicare Community Health Center, Inc.64 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Pomona
Clinicians with the same Medicare primary specialty in Pomona, CA — not a recommendation.
Other clinicians in Unicare Community Health Center, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1932837168 |
| 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