John Andrew Horton, M.D.
Addiction Medicine (Internal Medicine) Physician · Santa Barbara, CA
John Andrew Horton, M.D. is an addiction medicine (internal medicine) physician with a practice address in Santa Barbara, California, and NPI 1265492508, issued on Mar 23, 2006. Check the license (California 21176, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Andrew Horton
- Credential
- M.D.
- Primary taxonomy
- Addiction Medicine (Internal Medicine) Physician 207RA0401X
- License number
- 21176 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5266 Hollister Ave Ste 327, Santa Barbara, CA 93111
- Phone
- (805) 203-0717
- Enumerated
- Mar 23, 2006
- Record last updated
- Mar 25, 2025
- Fax
- (805) 830-0394
- Entity
- Type 1 · individual
8 nearest addiction medicine (internal medicine) physician records → All 73 in California → Look up another NPI →
Also registered at 5266 Hollister Ave Ste 327
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jack May, M.A.Marriage & Family Therapist1164791075
- Karima Shamma, MFTMarriage & Family Therapist1356700363
Verify John Andrew Horton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 21176Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average addiction medicine (internal medicine) physician in 2024
26 Medicare Part D claims, against an average of 829 among the 401 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
John Andrew Horton among 73 addiction medicine (internal medicine) physician records in California
John Andrew Horton, M.D. is one of 73 addiction medicine (internal medicine) physician records with a practice address in California. 75% 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 1% of them.
- NPI issued2006 · 1% of these records are older, 51% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 45% of these records are
- Record last updated2025 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0401X 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 (Internal Medicine) Physician providers in California
There are 73 addiction medicine (internal medicine) physician records in California.
All 73 in California → Every provider in Santa Barbara → Addiction Medicine (Internal Medicine) Physician nationwide →
The 8 addiction medicine (internal medicine) physician records with the nearest ZIP codes
- Christopher KerriganVentura, CA 930031508253634
- Thuan Nguyen, DOVentura, CA 930031841841350
- Mutahir Farhan, MDCorona, CA 928791033856661
- Blanca Trevino-Scatterday, MDOrange, CA 928681447321427
- Richard Scatterday, M.D.Anaheim, CA 928041134474042
- Kenneth Starr, M.D.Arroyo Grande, CA 934201861431595
- Ann Arcay, M.D.Santa Ana, CA 927011952415226
- Faried Banimahd, MDSanta Ana, CA 927011184860496
Common questions
What is John Andrew Horton, M.D.'s NPI number?
John Andrew Horton, M.D.'s National Provider Identifier (NPI) is 1265492508, issued on Mar 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Andrew Horton, M.D. located?
The NPPES record lists a practice address at 5266 Hollister Ave Ste 327, Santa Barbara, CA, 93111. Phone: (805) 203-0717. Providers update this record themselves, so call before visiting.
How can I verify John Andrew Horton, M.D.'s license?
NPPES lists California license number 21176, 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 John Andrew Horton, M.D. prescribe under Medicare Part D?
In 2024, John Andrew Horton, M.D. had 26 Medicare Part D claims; the average among addiction medicine (internal medicine) physician prescribers was 829. 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.