Gary Zhao, MD
NPI 1124114285 · Hematology & Oncology Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Zhao, MD is a Hematology & Oncology Physician provider in San Jose, CA (NPI 1124114285).
Provider details
- NPI number
- 1124114285
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A83349 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
750 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 264 | $110 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 263 | $75 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 56 | $40 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 43 | $89 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 36 | $165 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 121 | 16 |
| Abiraterone Acetate | 113 | 14 |
| Osimertinib Mesylatebrand: Tagrisso | 66 | — |
| Bicalutamide | 39 | — |
| Enzalutamidebrand: Xtandi | 27 | — |
| Hydroxyurea | 26 | — |
| Imatinib Mesylate | 24 | — |
| Ondansetron Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-05
- Last updated
- 2007-09-12
Frequently asked questions
- What is Gary Zhao's NPI number?
- Gary Zhao's National Provider Identifier (NPI) is 1124114285, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Zhao's specialty?
- Gary Zhao is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Zhao located?
- Gary Zhao's practice location on file with NPPES is 751 S Bascom Ave, San Jose, CA 95128-2604.
- What is Gary Zhao's phone number?
- The practice phone number listed in the NPPES registry for Gary Zhao is (408) 885-5969.
- Does Gary Zhao accept Medicare?
- Gary Zhao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Zhao's NPI active?
- Yes — Gary Zhao's NPI (1124114285) is active in the NPPES registry as of the last update on 2007-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.