Sheri D. Marquez, MD
Radiation Oncology Physician · Santa Maria, CA
Sheri D. Marquez, MD is a radiation oncology physician with a practice address in Santa Maria, California, and NPI 1538149224, issued on Jan 19, 2006. Check the license (California A60841, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sheri D. Marquez
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A60841 CA
Self-reported in NPPES; status is on the state search - Practice location
- 314 S Stratford Ave, Santa Maria, CA 93454
- Phone
- (805) 925-2529
- Enumerated
- Jan 19, 2006
- Record last updated
- Oct 1, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (805) 928-4478
- Medicaid ID
- 00A608410 CA
- Medicare enrollment
- Enrolled (PECOS I20051027000571); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Verify Sheri D. Marquez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A60841Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average radiation oncology physician in 2024
377 Medicare Part D claims for 104 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 26 claims were for opioids.
Most prescribed
- Tamsulosin Hcl67 claims
- Gabapentin32 claims
- Bicalutamide30 claims
- Pilocarpine Hcl30 claims
- Venlafaxine Hcl Er20 claims
- Ibuprofen19 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 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: $27.92
1 payment: food and beverage; the largest payer was Siemens Medical Solutions USA, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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 one group practice
- The Oncology Institute CA, A Professional CorporationLong Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sheri D. Marquez among 735 radiation oncology physician records in California
Sheri D. Marquez, MD is one of 735 radiation oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1995 · median 2005 among the 545 with a school on file
- Record last updated2007 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in Santa Maria → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Dylan Conroy, MDSanta Maria, CA 934541942761812
- Jonathan Vanwickle, MDSanta Maria, CA 934541811493737
- James Longo, MDTempleton, CA 934651083606602
- Paul Pagnini, M.D.Templeton, CA 934651225188105
- John Wilkinson, M.D.Lompoc, CA 934361568621803
- Robert Fishburn, MDSan Luis Obispo, CA 934051508858465
- Jonathan Stella, MDSan Luis Obispo, CA 934051790787141
- Lauren Tait, M.D.San Luis Obispo, CA 934051972821601
Common questions
What is Sheri D. Marquez, MD's NPI number?
Sheri D. Marquez, MD's National Provider Identifier (NPI) is 1538149224, issued on Jan 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sheri D. Marquez, MD located?
The NPPES record lists a practice address at 314 S Stratford Ave, Santa Maria, CA, 93454. Phone: (805) 925-2529. Providers update this record themselves, so call before visiting.
How can I verify Sheri D. Marquez, MD's license?
NPPES lists California license number A60841, 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 Sheri D. Marquez, MD prescribe under Medicare Part D?
In 2024, Sheri D. Marquez, MD had 377 Medicare Part D claims for 104 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Sheri D. Marquez, MD's MIPS final score?
The 2023 MIPS final score is 85 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.