Gerardo Bustillo, M.D.
Obstetrics & Gynecology Physician · Fountain Valley, CA
Gerardo Bustillo, M.D. is an obstetrics & gynecology physician with a practice address in Fountain Valley, California, and NPI 1972631786, issued on Mar 1, 2007. Check the license (California G51357, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gerardo Bustillo
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G51357 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18035 Brookhurst Street, Fountain Valley, CA 92708
- Phone
- (657) 241-9090
- Enumerated
- Mar 1, 2007
- Record last updated
- Oct 13, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090723000225); accepts Medicare assignment
- Medical or professional school
- Js Weill Medical College, Cornell University, 1982
- Entity
- Type 1 · individual
Also registered at 18035 Brookhurst Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Denise CastellanosMidwife1356587042
- Patricia Evans, CNMMidwife1760488126
- Lynn Hansen, CNMMidwife1063597219
- Annette McConnaughey, CNMMidwife1851398002
- G. Thomas Ruiz, MDObstetrics & Gynecology Physician1518967330
- Corry Varner, CNMAdvanced Practice Midwife1437347937
Verify Gerardo Bustillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G51357Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
214 Medicare Part D claims for 59 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Progesterone28 claims
- Estradiol (Twice Weekly)26 claims
- Yuvafem22 claims
- Estradiol19 claims
- Clobetasol Propionate15 claims
- Sertraline Hcl14 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): 76.7 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
- Memorialcare Medical FoundationFountain Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
23 obstetrics & gynecology physician records list a practice address in Fountain Valley
They are 23 of the 2,190 NPPES records with a practice address in Fountain Valley, and 5,088 obstetrics & gynecology physician records in California.
All 23 in Fountain Valley → All 5,088 in California → Every provider in Fountain Valley →
Other obstetrics & gynecology physician records in California
- Ingrid Aalami, MDSan Jose, CA1952376550
- Avisa Abaian- Eagar, M.D.Orange, CA1316057755
- Derek Abbassi, MDWalnut Creek, CA1841364155
- Ahmed Abdelaziz, MDSanta Maria, CA1790039733
- Alireza Abdollah Shamshirsaz, M.D.Palo Alto, CA1881804235
- Nicole Abell, DOVentura, CA1811243603
- Zachary AbelsonLos Angeles, CA1689237414
- Ray Abinader, M.D.Loma Linda, CA1770901548
- Tarek Abou El Kheir, M.D.San Bernardino, CA1477521789
- Nada Abou-HaibaLos Angeles, CA1134067549
Common questions
What is Gerardo Bustillo, M.D.'s NPI number?
Gerardo Bustillo, M.D.'s National Provider Identifier (NPI) is 1972631786, issued on Mar 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gerardo Bustillo, M.D. located?
The NPPES record lists a practice address at 18035 Brookhurst Street, Fountain Valley, CA, 92708. Phone: (657) 241-9090. Providers update this record themselves, so call before visiting.
How can I verify Gerardo Bustillo, M.D.'s license?
NPPES lists California license number G51357, 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 Gerardo Bustillo, M.D. prescribe under Medicare Part D?
In 2024, Gerardo Bustillo, M.D. had 214 Medicare Part D claims for 59 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Gerardo Bustillo, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.7 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.