Gustavo E. Estrella, MD
Family Medicine Physician · Downey, CA
Gustavo E. Estrella, MD is a family medicine physician with a practice address in Downey, California, and NPI 1538208236, issued on Feb 6, 2007. Check the license (California A62006, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gustavo E. Estrella
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A62006 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8311 Florence Ave, Downey, CA 90240
- Phone
- (562) 923-4911
- Enumerated
- Feb 6, 2007
- Record last updated
- Dec 14, 2025
- Medicaid ID
- 00A620060 CA
- Medicare enrollment
- Enrolled (PECOS I20080112000103); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 8311 Florence Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Demetra Bastas-Bratkic, CRNPFamily Nurse Practitioner1538237177
- Mari Carranza, NP-CFamily Nurse Practitioner1689185043
- Brian FloresHearing Instrument Specialist1144752825
- Arnab Ganguly, MDPediatrics Physician1316095227
- Cristina Garcia, MDFamily Medicine Physician1326391004
- Maria Carla Gong, NPFamily Nurse Practitioner1043895956
Verify Gustavo E. Estrella in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A62006Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.7 times the Medicare Part D claims of the average family medicine physician in 2024
12,942 Medicare Part D claims for 1,357 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 227 claims were for opioids.
Most prescribed
- Atorvastatin Calcium974 claims
- Amlodipine Besylate777 claims
- Metformin Hcl606 claims
- Losartan Potassium515 claims
- Omeprazole396 claims
- Lisinopril345 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
- Healthcare Partners Affiliates Medical GroupEl Monte, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gustavo E. Estrella among 17,133 family medicine physician records in California
Gustavo E. Estrella, MD is one of 17,133 family 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 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1995 · median 2005 among the 10,652 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
65 family medicine physician records list a practice address in Downey
They are 65 of the 3,607 NPPES records with a practice address in Downey, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Downey → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Gregory Castillo, MD.Downey, CA 902401700839917
- Cristina Garcia, MDDowney, CA 902401326391004
- Marshall Kahn, M.D.Downey, CA 902401699912451
- Susan Kawakami, D.O.Downey, CA 902401740212851
- Marilou Lucero, M.D.Downey, CA 902401861523052
- Anar Patel-Joshi, MDDowney, CA 902401710509500
- Enrique Robles, M.D.Downey, CA 902401932155157
- Martha Rodriguez, M.D.Downey, CA 902401912993973
Common questions
What is Gustavo E. Estrella, MD's NPI number?
Gustavo E. Estrella, MD's National Provider Identifier (NPI) is 1538208236, issued on Feb 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gustavo E. Estrella, MD located?
The NPPES record lists a practice address at 8311 Florence Ave, Downey, CA, 90240. Phone: (562) 923-4911. Providers update this record themselves, so call before visiting.
How can I verify Gustavo E. Estrella, MD's license?
NPPES lists California license number A62006, 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 Gustavo E. Estrella, MD prescribe under Medicare Part D?
In 2024, Gustavo E. Estrella, MD had 12,942 Medicare Part D claims for 1,357 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.