Rebecca Lynn Roy, M.D.
Obstetrics & Gynecology Physician · Downey, CA
Rebecca Lynn Roy, M.D. is an obstetrics & gynecology physician with a practice address in Downey, California, and NPI 1154610145, issued on Mar 31, 2011. Check the license (California A140267, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rebecca Lynn Roy
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- A140267 CA
Q2839 TX
Self-reported in NPPES; status is on the state search - Practice location
- 9449 Imperial Hwy, Downey, CA 90242
- Phone
- (800) 823-4040
- Enumerated
- Mar 31, 2011
- Record last updated
- Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161205002480); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2011
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 9449 Imperial Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gary AfferinoPharmacist1437696267
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- Melanie Aoki, PH.D.Cognitive & Behavioral Psychologist1588865489
- Glenn Arnoco, FNPFamily Medicine Physician1629633391
- Shant Ashdjian, M.D.Obstetrics & Gynecology Physician1841502457
- Sana Ashraf, MDPediatric Cardiology Physician1316177215
Verify Rebecca Lynn Roy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A140267Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
78 Medicare Part D claims for 37 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Clobetasol Propionate23 claims
- Estradiol16 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupWhittier, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rebecca Lynn Roy among 5,088 obstetrics & gynecology physician records in California
Rebecca Lynn Roy, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2011 · median 2004 among the 2,700 with a school on file
- Record last updated2021 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Downey → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Fataneh Amidi, MDDowney, CA 902421134357981
- Shant Ashdjian, M.D.Downey, CA 902421841502457
- Elizabeth Brundin, MDDowney, CA 902421790456283
- Hemaxi Desai, DODowney, CA 902421205566171
- Liza Jaime, M.D.Downey, CA 902421629380233
- Sharon Jakus-Waldman, M.D.Downey, CA 902421588767016
- Marsha Martinson, M.D.Downey, CA 902421043525157
- Hazim Shams, M.D.Downey, CA 902421336357110
Common questions
What is Rebecca Lynn Roy, M.D.'s NPI number?
Rebecca Lynn Roy, M.D.'s National Provider Identifier (NPI) is 1154610145, issued on Mar 31, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Rebecca Lynn Roy, M.D. located?
The NPPES record lists a practice address at 9449 Imperial Hwy, Downey, CA, 90242. Phone: (800) 823-4040. Providers update this record themselves, so call before visiting.
How can I verify Rebecca Lynn Roy, M.D.'s license?
NPPES lists California license number A140267, 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 Rebecca Lynn Roy, M.D. prescribe under Medicare Part D?
In 2024, Rebecca Lynn Roy, M.D. had 78 Medicare Part D claims for 37 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
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.