Stephanie Castillo, MD
Addiction Medicine (Family Medicine) Physician · San Ysidro, CA
Stephanie Castillo, MD is an addiction medicine (family medicine) physician with a practice address in San Ysidro, California, and NPI 1902330723, issued on Apr 18, 2017. Check the license (California A159673, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephanie Castillo
- Credential
- MD
- Primary taxonomy
- Addiction Medicine (Family Medicine) Physician 207QA0401X
- License number
- A159673 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1601 Precision Park LN, San Ysidro, CA 92173
- Phone
- (619) 662-4100
- Enumerated
- Apr 18, 2017
- Record last updated
- Aug 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20220502001179); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest addiction medicine (family medicine) physician records → All 124 in California → Look up another NPI →
Also registered at 1601 Precision Park LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrew BuiStudent in an Organized Health Care Education/Training Program1205397361
- Tia Cornelius, COTAOccupational Therapy Assistant1700367224
- Katherine FuPsychiatry Physician1356877807
- Laura Lopez CamachoSocial Worker1881554921
- Sergio Maury, MDStudent in an Organized Health Care Education/Training Program1235759671
- Negin Rajaipour, M.D.Family Medicine Physician1508286709
Verify Stephanie Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A159673Check 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% fewer Medicare Part D claims than the average addiction medicine (family medicine) physician in 2024
109 Medicare Part D claims for 28 beneficiaries, against an average of 664 among the 581 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Naltrexone Hcl24 claims
- Buprenorphine-Naloxone19 claims
- Vivitrol14 claims
- Diazepam12 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
- Centro DE Salud DE LA Comunidad DE San Ysidro, Inc.San Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephanie Castillo among 124 addiction medicine (family medicine) physician records in California
Stephanie Castillo, MD is one of 124 addiction medicine (family medicine) physician records with a practice address in California. 78% 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 62% of them.
- NPI issued2017 · 62% of these records are older, 31% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2017 · median 2015 among the 64 with a school on file
- Record last updated2021 · 33% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0401X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Addiction Medicine (Family Medicine) Physician providers in California
There are 124 addiction medicine (family medicine) physician records in California.
All 124 in California → Every provider in San Ysidro → Addiction Medicine (Family Medicine) Physician nationwide →
The 8 addiction medicine (family medicine) physician records with the nearest ZIP codes
- Phillip Richards, M.D.Indian Wells, CA 922101275861734
- Karen Antwiler, M.D.Cathedral City, CA 922341598255465
- Gina Caravaglia, DOCathedral City, CA 922341538147459
- Puri Barin-Tanjuaquio, M.D.San Diego, CA 921081457579716
- Elizabeth Barrera, D.O.San Diego, CA 921081407286503
- Kenneth Russ, M.D.Desert Hot Springs, CA 922401245258235
- Dale Apodaca, M.D.San Diego, CA 921031598036436
- Jerry Ayers, MDSan Diego, CA 921011104977602
Common questions
What is Stephanie Castillo, MD's NPI number?
Stephanie Castillo, MD's National Provider Identifier (NPI) is 1902330723, issued on Apr 18, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Castillo, MD located?
The NPPES record lists a practice address at 1601 Precision Park LN, San Ysidro, CA, 92173. Phone: (619) 662-4100. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Castillo, MD's license?
NPPES lists California license number A159673, 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 Stephanie Castillo, MD prescribe under Medicare Part D?
In 2024, Stephanie Castillo, MD had 109 Medicare Part D claims for 28 beneficiaries; the average among addiction medicine (family medicine) physician prescribers was 664. 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.