Stephen A. Chan, M.D.
Otolaryngology Physician · Oxnard, CA
Stephen A. Chan, M.D. is an otolaryngology physician with a practice address in Oxnard, California, and NPI 1568994010, issued on Apr 3, 2017. Check the license (California A178855, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen A. Chan
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- A178855 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1700 N Rose Ave Ste 460, Oxnard, CA 93030
- Phone
- (805) 983-0395
- Enumerated
- Apr 3, 2017
- Record last updated
- Nov 16, 2023
- Fax
- (805) 983-0463
- Medicare enrollment
- Enrolled (PECOS I20220727001241); accepts Medicare assignment
- Medical or professional school
- University Of Kentucky College Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 1,212 in California → Look up another NPI →
Also registered at 1700 N Rose Ave Ste 460
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daven Gonzales, AU.D.Audiologist1821969072
- Joseph Lee, M.D.Otolaryngology Physician1417912775
- Roselynn Plevack, AUDAudiologist1649894478
- Erin Rohm, AUD.Audiologist1346675154
Verify Stephen A. Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A178855Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% more Medicare Part D claims than the average otolaryngology physician in 2024
997 Medicare Part D claims for 401 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Famotidine198 claims
- Omeprazole103 claims
- Fluticasone Propionate92 claims
- Ipratropium Bromide92 claims
- Fluocinolone Acetonide Oil75 claims
- Baclofen56 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): 85.4 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).
Industry payments in 2024: $702.55
14 payments; by number, the most common kind was food and beverage; the largest payer was Cochlear Americas. The 6,429 providers of this specialty with any payment received $1,922.50 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.
Bills Medicare through 2 group practices
- Bass Medical GroupOxnard, CA
- West Coast Ear, Nose And ThroatOxnard, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen A. Chan among 1,212 otolaryngology physician records in California
Stephen A. Chan, M.D. is one of 1,212 otolaryngology physician records with a practice address in California. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 86% of them.
- NPI issued2017 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2017 · median 2004 among the 818 with a school on file
- Record last updated2023 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in California
There are 1,212 otolaryngology physician records in California.
All 1,212 in California → Every provider in Oxnard → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Nicholas Fettman, MDOxnard, CA 930301003005109
- Joseph Lee, M.D.Oxnard, CA 930301417912775
- Elisabeth Barbosa, M.D.Oxnard, CA 930361972600260
- Saranya Reghunathan, M.D.Oxnard, CA 930361811252968
- Tom Coffey, MDOjai, CA 930231942231782
- Armin Alavi, M.D.Ventura, CA 930031134318439
- Alexa Castellano, MDVentura, CA 930031578978813
- John Edison, M.D.Ventura, CA 930031134116643
Common questions
What is Stephen A. Chan, M.D.'s NPI number?
Stephen A. Chan, M.D.'s National Provider Identifier (NPI) is 1568994010, issued on Apr 3, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Stephen A. Chan, M.D. located?
The NPPES record lists a practice address at 1700 N Rose Ave Ste 460, Oxnard, CA, 93030. Phone: (805) 983-0395. Providers update this record themselves, so call before visiting.
How can I verify Stephen A. Chan, M.D.'s license?
NPPES lists California license number A178855, 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 A. Chan, M.D. prescribe under Medicare Part D?
In 2024, Stephen A. Chan, M.D. had 997 Medicare Part D claims for 401 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Stephen A. Chan, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.4 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.