Calvin C. Zhao, MD
Urology Physician · Stanford, CA
Calvin C. Zhao, MD is a urology physician with a practice address in Stanford, California, and NPI 1134700800, issued on Apr 15, 2021. Check the license (California A190964, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Calvin C. Zhao
- Credential
- MD
- Primary taxonomy
- Urology Physician 208800000X
- License number
- A190964 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Apr 15, 2021
- Record last updated
- Apr 28, 2025
- Entity
- Type 1 · individual
8 nearest urology physician records → All 1,524 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Calvin C. Zhao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A190964Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average urology physician in 2024
121 Medicare Part D claims for 67 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Tamsulosin Hcl26 claims
- Oxycodone Hcl23 claims
- Ibuprofen13 claims
- Hydrocortisone12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $188.59
2 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 9,340 providers of this specialty with any payment received $3,800.04 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Calvin C. Zhao among 1,524 urology physician records in California
Calvin C. Zhao, MD is one of 1,524 urology physician records with a practice address in California. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 96% of them.
- NPI issued2021 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208800000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Urology Physician providers in California
There are 1,524 urology physician records in California.
All 1,524 in California → Every provider in Stanford → Urology Physician nationwide →
The 8 urology physician records with the nearest ZIP codes
- Jennifer Abidari, MDStanford, CA 943051811098197
- Rodney Anderson, MDStanford, CA 943051265443246
- James Brooks, MDStanford, CA 943051043320005
- Benjamin Chung, M.D.Stanford, CA 943051205945920
- Craig Comiter, MDStanford, CA 943051780657171
- Michael Eisenberg, MDStanford, CA 943051508999749
- Harcharan Gill, MDStanford, CA 943051326152422
- Vanessa Gulla, M.D.Stanford, CA 943051376648279
Common questions
What is Calvin C. Zhao, MD's NPI number?
Calvin C. Zhao, MD's National Provider Identifier (NPI) is 1134700800, issued on Apr 15, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Calvin C. Zhao, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Calvin C. Zhao, MD's license?
NPPES lists California license number A190964, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Calvin C. Zhao, MD prescribe under Medicare Part D?
In 2024, Calvin C. Zhao, MD had 121 Medicare Part D claims for 67 beneficiaries; the average among urology physician prescribers was 1,340. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.