Stephen M. Zanoni, M.D.
Emergency Medicine Physician · Chula Vista, CA
Stephen M. Zanoni, M.D. is an emergency medicine physician with a practice address in Chula Vista, California, and NPI 1750585535, issued on Jun 13, 2007. Check the license (California A140104, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen M. Zanoni
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A140104 CA
Self-reported in NPPES; status is on the state search - Practice location
- 436 H St, Chula Vista, CA 91910
- Phone
- (619) 691-7000
- Enumerated
- Jun 13, 2007
- Record last updated
- Dec 9, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160226000763); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Verify Stephen M. Zanoni in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A140104Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% fewer Medicare Part D claims than the average emergency medicine physician in 2024
216 Medicare Part D claims for 137 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 17 claims were for opioids.
Most prescribed
- Ibuprofen19 claims
- Doxycycline Hyclate15 claims
- Albuterol Sulfate Hfa14 claims
- Cephalexin14 claims
- Cefuroxime11 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): 88 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
- Chula Vista Emergency Room Physicians A Medical CorporationChula Vista, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen M. Zanoni among 7,751 emergency medicine physician records in California
Stephen M. Zanoni, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 50% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2003 · median 2011 among the 4,560 with a school on file
- Record last updated2019 · 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 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Chula Vista → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Wayne Bergman, M.D.Chula Vista, CA 919101194755066
- Shaun Carstairs, M.D.Chula Vista, CA 919101255301602
- Monique Devoe, M.D.Chula Vista, CA 919101750312351
- Tonianne French, M.D.Chula Vista, CA 919101770578411
- Mark Handy, M.D.Chula Vista, CA 919101912932062
- Beverly Harrell-Bruder, M.D.Chula Vista, CA 919101619907581
- Peter Jost, M.D.Chula Vista, CA 919101518992668
- Peter Mishky, M.D.Chula Vista, CA 919101487681821
Common questions
What is Stephen M. Zanoni, M.D.'s NPI number?
Stephen M. Zanoni, M.D.'s National Provider Identifier (NPI) is 1750585535, issued on Jun 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen M. Zanoni, M.D. located?
The NPPES record lists a practice address at 436 H St, Chula Vista, CA, 91910. Phone: (619) 691-7000. Providers update this record themselves, so call before visiting.
How can I verify Stephen M. Zanoni, M.D.'s license?
NPPES lists California license number A140104, 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 Stephen M. Zanoni, M.D. prescribe under Medicare Part D?
In 2024, Stephen M. Zanoni, M.D. had 216 Medicare Part D claims for 137 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Stephen M. Zanoni, M.D.'s MIPS final score?
The 2023 MIPS final score is 88 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.