Benjamin Ross Frimmer, MS, PA-C
Physician Assistant · San Luis Obispo, CA
Benjamin Ross Frimmer, MS, PA-C is a physician assistant with a practice address in San Luis Obispo, California, and NPI 1104374883, issued on Sep 12, 2016. Check the license (California 53749, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Benjamin Ross Frimmer
- Credential
- MS, PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 53749 CA
Self-reported in NPPES; status is on the state search - Practice location
- 777 E Foothill Blvd, San Luis Obispo, CA 93405
- Phone
- (805) 762-4348
- Enumerated
- Sep 12, 2016
- Record last updated
- Jul 31, 2025
- Fax
- (805) 541-1167
- Medicare enrollment
- Enrolled (PECOS I20161021002052); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 777 E Foothill Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley Mishra, FNP-CFamily Nurse Practitioner1235648171
Verify Benjamin Ross Frimmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 53749Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.4 times the Medicare Part D claims of the average physician assistant in 2024
3,631 Medicare Part D claims for 416 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 68 claims were for opioids.
Most prescribed
- Atorvastatin Calcium318 claims
- Lisinopril209 claims
- Levothyroxine Sodium187 claims
- Losartan Potassium101 claims
- Omeprazole100 claims
- Rosuvastatin Calcium99 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): 83.6 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).
Bills Medicare through 2 group practices
- Adventist Health Physicians NetworkArroyo Grande, CA
- Cottage Clinical Network LLCGoleta, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin Ross Frimmer among 14,451 physician assistant records in California
Benjamin Ross Frimmer, MS, PA-C is one of 14,451 physician assistant 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 2016, is newer than 44% of them.
- NPI issued2016 · 44% of these records are older, 53% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2016 · median 2018 among the 7,214 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
58 physician assistant records list a practice address in San Luis Obispo
They are 58 of the 3,403 NPPES records with a practice address in San Luis Obispo, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in San Luis Obispo → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Suzanne Bakke, PA-CSan Luis Obispo, CA 934051861676553
- Brittany Bell, PA-CSan Luis Obispo, CA 934051972047587
- Gary Cooper, P.A.San Luis Obispo, CA 934051598889735
- Jacqualine Dancy, PA-CSan Luis Obispo, CA 934051073558748
- Lisa Dimodica, PASan Luis Obispo, CA 934051669617015
- David Gingrich, PASan Luis Obispo, CA 934051134252653
- Tina Heck, PA-CSan Luis Obispo, CA 934051003048620
- Eric Hixon, PASan Luis Obispo, CA 934051841276409
Common questions
What is Benjamin Ross Frimmer, MS, PA-C's NPI number?
Benjamin Ross Frimmer, MS, PA-C's National Provider Identifier (NPI) is 1104374883, issued on Sep 12, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Ross Frimmer, MS, PA-C located?
The NPPES record lists a practice address at 777 E Foothill Blvd, San Luis Obispo, CA, 93405. Phone: (805) 762-4348. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Ross Frimmer, MS, PA-C's license?
NPPES lists California license number 53749, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Benjamin Ross Frimmer, MS, PA-C prescribe under Medicare Part D?
In 2024, Benjamin Ross Frimmer, MS, PA-C had 3,631 Medicare Part D claims for 416 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Benjamin Ross Frimmer, MS, PA-C's MIPS final score?
The 2023 MIPS final score is 83.6 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.