Steven W. Zonner, D.O.
Sports Medicine (Family Medicine) Physician · Union City, CA
Steven W. Zonner, D.O. is a sports medicine (family medicine) physician with a practice address in Union City, California, and NPI 1578736617, issued on Apr 9, 2008. Check the license (California 20A5986, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Steven W. Zonner
- Credential
- D.O.
- Primary taxonomy
- Sports Medicine (Family Medicine) Physician 207QS0010X
- License number
- 20A5986 CA
Self-reported in NPPES; status is on the state search - Practice location
- 33077 Alvarado Niles RD, Union City, CA 94587
- Phone
- (510) 248-1500
- Enumerated
- Apr 9, 2008
- Record last updated
- Aug 18, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (510) 675-0846
- Medicare enrollment
- Enrolled (PECOS I20120416000752); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 1986
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest sports medicine (family medicine) physician records → All 266 in California → Look up another NPI →
Also registered at 33077 Alvarado Niles RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Georgina Dorkin, FNPFamily Nurse Practitioner1811087109
- Hanisha Geedipally, MDInternal Medicine Physician1407529902
- Tam Nguyen, M.D.Family Medicine Physician1093929697
- Kevin Porciuncula, M.D.Family Medicine Physician1629456520
- Rajvir Shahi, MDInternal Medicine Physician1417436056
- Sonia Torres-Ramos, PAPhysician Assistant1346955820
Verify Steven W. Zonner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A5986Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7.2 times the Medicare Part D claims of the average sports medicine (family medicine) physician in 2024
6,180 Medicare Part D claims for 365 beneficiaries, against an average of 855 among the 2,237 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 186 claims were for opioids.
Most prescribed
- Ezetimibe495 claims
- Atorvastatin Calcium464 claims
- Rosuvastatin Calcium294 claims
- Losartan Potassium260 claims
- Levothyroxine Sodium219 claims
- Amlodipine Besylate197 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 practice group's MIPS final score for 2023 (Medicare payment program): 86.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Washington Township Medical FoundationUnion City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Steven W. Zonner among 266 sports medicine (family medicine) physician records in California
Steven W. Zonner, D.O. is one of 266 sports medicine (family medicine) physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 35% of them.
- NPI issued2008 · 35% of these records are older, 61% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1986 · median 2012 among the 190 with a school on file
- Record last updated2016 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QS0010X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sports Medicine (Family Medicine) Physician providers in California
There are 266 sports medicine (family medicine) physician records in California.
All 266 in California → Every provider in Union City → Sports Medicine (Family Medicine) Physician nationwide →
The 8 sports medicine (family medicine) physician records with the nearest ZIP codes
- Julia Hohman, M.D.Walnut Creek, CA 945951649327685
- William Ross, MDWalnut Creek, CA 945961548312697
- Robert Ozaki, D.O.Walnut Creek, CA 945981851358915
- Matthew Pecci, M.D.Walnut Creek, CA 945981699749754
- Nancy Rolnik, M.D.Walnut Creek, CA 945981710083654
- Alan Grusky, MDOakland, CA 946111386394872
- Allen Wong, MDOakland, CA 946111508278466
- Chi Chien Yau, DOOakland, CA 946111447756317
Common questions
What is Steven W. Zonner, D.O.'s NPI number?
Steven W. Zonner, D.O.'s National Provider Identifier (NPI) is 1578736617, issued on Apr 9, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Steven W. Zonner, D.O. located?
The NPPES record lists a practice address at 33077 Alvarado Niles RD, Union City, CA, 94587. Phone: (510) 248-1500. Providers update this record themselves, so call before visiting.
How can I verify Steven W. Zonner, D.O.'s license?
NPPES lists California license number 20A5986, 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 Steven W. Zonner, D.O. prescribe under Medicare Part D?
In 2024, Steven W. Zonner, D.O. had 6,180 Medicare Part D claims for 365 beneficiaries; the average among sports medicine (family medicine) physician prescribers was 855. Part D covers Medicare prescriptions only.
What is Steven W. Zonner, D.O.'s MIPS final score?
The 2023 MIPS final score is 86.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.