Kenneth Starr, M.D.
Addiction Medicine (Internal Medicine) Physician · Arroyo Grande, CA
Kenneth Starr, M.D. is an addiction medicine (internal medicine) physician with a practice address in Arroyo Grande, California, and NPI 1861431595, issued on Jun 6, 2006. Check the license (California A105044, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kenneth Starr
- Credential
- M.D.
- Primary taxonomy
- Addiction Medicine (Internal Medicine) Physician 207RA0401X
- License numbers
- A105044 CA
MD22323O OR
Self-reported in NPPES; status is on the state search - Practice location
- 107 Nelson St, Arroyo Grande, CA 93420
- Phone
- (805) 242-1360
- Enumerated
- Jun 6, 2006
- Record last updated
- Jul 21, 2022
- Medicaid IDs
- 8283574 WA
XPY196669 CA
288397 OR - Entity
- Type 1 · individual
8 nearest addiction medicine (internal medicine) physician records → All 73 in California → Look up another NPI →
Also registered at 107 Nelson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Dawes, RDRegistered Dietitian1982687851
- Emily Maddox, LPCC #374Addiction (Substance Use Disorder) Counselor1629117981
- Catherine Stanton, RNInfusion Therapy Registered Nurse1255907028
Verify Kenneth Starr in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A105044Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average addiction medicine (internal medicine) physician in 2024
527 Medicare Part D claims for 55 beneficiaries, against an average of 829 among the 401 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 20 claims were for opioids.
Most prescribed
- Buprenorphine-Naloxone138 claims
- Buprenorphine Hcl64 claims
- Alprazolam37 claims
- Suboxone36 claims
- Diazepam31 claims
- Gabapentin29 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): 94.6 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).
Industry payments in 2024: $11,453.54
17 payments; by number, the most common kind was food and beverage; the largest payer was Alkermes, Inc. The 188 providers of this specialty with any payment received $1,761.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Kenneth Starr among 73 addiction medicine (internal medicine) physician records in California
Kenneth Starr, 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 updated2022 · 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 Arroyo Grande → Addiction Medicine (Internal Medicine) Physician nationwide →
The 8 addiction medicine (internal medicine) physician records with the nearest ZIP codes
- Gawtham Gutta, MDRidgecrest, CA 935551245262617
- Farhad Mahjouri, MD, MPHFresno, CA 937281497902993
- John Horton, M.D.Santa Barbara, CA 931111265492508
- 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
Common questions
What is Kenneth Starr, M.D.'s NPI number?
Kenneth Starr, M.D.'s National Provider Identifier (NPI) is 1861431595, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth Starr, M.D. located?
The NPPES record lists a practice address at 107 Nelson St, Arroyo Grande, CA, 93420. Phone: (805) 242-1360. Providers update this record themselves, so call before visiting.
How can I verify Kenneth Starr, M.D.'s license?
NPPES lists California license number A105044, 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 Kenneth Starr, M.D. prescribe under Medicare Part D?
In 2024, Kenneth Starr, M.D. had 527 Medicare Part D claims for 55 beneficiaries; the average among addiction medicine (internal medicine) physician prescribers was 829. Part D covers Medicare prescriptions only.
What is Kenneth Starr, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.6 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.