Quick answers
- Does Peilin Zhang accept Medicare assignment?
- Yes. Medicare's clinician data says Peilin Zhang 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 Peilin Zhang see?
- In 2024, CMS data shows 524 Original Medicare patients and 1,606 services for Peilin Zhang. This counts Original Medicare only and measures volume, not quality.
- What is Peilin Zhang's NPI number?
- 1053310847. 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 Peilin Zhang, 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 | 524 |
|---|---|
| Services billed to Medicare | 1,606 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)629 services
- Special stained specimen slides to examine tissue, each additional procedure (88341)296 services
- Special stained specimen slides to examine tissue, initial procedure (88342)122 services
- Pathology examination of tissue using a microscope, moderately high complexity (88307)99 services
- Cell examination of specimen, selective cellular enhancement technique (88112)74 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%
- Arthritis46%
- Diabetes38%
- Ischemic heart disease34%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)33%
Hospitals where Peilin Zhang works
Medicare's Facility Affiliation Data lists Peilin Zhang at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Grossmont HospitalLa Mesa, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050026
- Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050222
- Sharp Coronado Hospital and Healthcare CenterCoronado, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050234
- Sharp Memorial HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050100
Practice locations
Addresses where Peilin Zhang is enrolled with Medicare (CMS data updated October 2, 2026).
- 5555 Grossmont Ctr DrLa Mesa, CA 91942 (619) 740‑4492
- 7901 Frost StSan Diego, CA 92123 (858) 541‑3400
- 9295 Farnham St, Suite 100San Diego, CA 92123 (858) 939‑3660
Group practices
Medicare enrollment lists Peilin Zhang as a member of these groups (CMS data updated October 2, 2026).
- Analytic Pathology Medical Group Inc19 clinicians in the group
- Pacific Rim Pathology Medical Corporation19 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in La Mesa
Clinicians with the same Medicare primary specialty in La Mesa, CA — not a recommendation.
Other clinicians in Analytic Pathology Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053310847 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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