Douglas Zhang, M.D.
Geriatric Medicine (Family Medicine) Physician · San Leandro, CA
Douglas Zhang, M.D. is a geriatric medicine (family medicine) physician with a practice address in San Leandro, California, and NPI 1023074341, issued on Apr 25, 2006. Check the license (California A63200, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Douglas Zhang
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Family Medicine) Physician 207QG0300X
- License number
- A63200 CA
Self-reported in NPPES; status is on the state search - Practice location
- 13851 E 14TH St, San Leandro, CA 94578
- Phone
- (510) 351-2100
- Enumerated
- Apr 25, 2006
- Entity
- Type 1 · individual
Also registered at 13851 E 14TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hamoudi Al-Bander, M.D.Specialist1316988785
- Kelley Bradshaw, M.S., R.D.Registered Dietitian1477826444
- Wisal Fare, PA-CAdult Health Clinical Nurse Specialist1578525598
- Willis Gelston, M.D.Geriatric Medicine (Family Medicine) Physician1134188360
- Robert Gingery, M.D.Vascular Surgery Physician1417974460
- Kenneth Harley, MDEmergency Medicine Physician1558333443
Verify Douglas Zhang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A63200Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2.9 times the Medicare Part D claims of the average geriatric medicine (family medicine) physician in 2024
14,152 Medicare Part D claims for 963 beneficiaries, against an average of 4,917 among the 1,261 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 349 claims were for opioids.
Most prescribed
- Atorvastatin Calcium930 claims
- Amlodipine Besylate680 claims
- Losartan Potassium568 claims
- Metformin Hcl516 claims
- Metoprolol Succinate393 claims
- Levothyroxine Sodium343 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.
The Medicare quality score for 2023: 20.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,611.97
74 payments, mostly food and beverage; the largest payer was Novo Nordisk Inc. The 498 providers of this specialty with any payment received $2,104.14 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.
Geriatric Medicine (Family Medicine) Physician providers in California
There are 250 geriatric medicine (family medicine) physician records in California.
Other geriatric medicine (family medicine) physician records in California
- Nagina Abdiani, DOOrange, CA1518543271
- Shivali Agarwal, M.D.Fresno, CA1518493626
- Kent Ahn, MDFontana, CA1083762017
- Theresa Allison, M.D.San Francisco, CA1760415004
- Nancy Alvarez, NPSimi Valley, CA1437885837
- Aarthi Anand, M.D.Palo Alto, CA1881776060
- Eddy Ang, MD, MPHSouth Gate, CA1508158197
- Hermenegildo Angeles, MD APCDaly City, CA1396712303
- Lianna Ansryan, RN-GERO, MSN, CNS,Los Angeles, CA1568047645
- Celestine Arambulo, DOSan Diego, CA1477624377
Common questions
What is Douglas Zhang, M.D.'s NPI number?
Douglas Zhang, M.D.'s National Provider Identifier (NPI) is 1023074341, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Zhang, M.D. located?
The NPPES record lists a practice address at 13851 E 14TH St, San Leandro, CA, 94578. Phone: (510) 351-2100. Providers update this record themselves, so call before visiting.
How can I verify Douglas Zhang, M.D.'s license?
NPPES lists California license number A63200, 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 Douglas Zhang, M.D. prescribe under Medicare Part D?
In 2024, Douglas Zhang, M.D. had 14,152 Medicare Part D claims for 963 beneficiaries; the average among geriatric medicine (family medicine) physician prescribers was 4,917. Part D covers Medicare prescriptions only.
What is Douglas Zhang, M.D.'s Medicare quality score?
The 2023 MIPS final score is 20.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.