Catherine L. Barth, PA-C
Physician Assistant · San Marino, CA
Catherine L. Barth, PA-C is a physician assistant with a practice address in San Marino, California, and NPI 1184283178, issued on Jun 12, 2019. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Catherine L. Barth
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 2200 Chaucer RD, San Marino, CA 91108
- Phone
- (626) 485-4837
- Enumerated
- Jun 12, 2019
- Record last updated
- Mar 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200124002376); accepts Medicare assignment
- Entity
- Type 1 · individual
Verify Catherine L. Barth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average physician assistant in 2024
145 Medicare Part D claims for 111 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa18 claims
- Cephalexin16 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): 85.7 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 one group practice
- Cedars-Sinai Medical Care FoundationLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
6 physician assistant records list a practice address in San Marino
They are 6 of the 184 NPPES records with a practice address in San Marino, and 14,451 physician assistant records in California.
All 6 in San Marino → All 14,451 in California → Every provider in San Marino →
Other physician assistant records in California
- Marcia -Galbraith, PAStockton, CA1407143274
- Danny Abad, PAOrange, CA1477158673
- Lea Dominique Abadies, PATustin, CA1124754254
- Rea Elizabeth Abaniel, P.A.-CSeal Beach, CA1396173621
- Ramina Abbasi, PA-CSignal Hill, CA1093448300
- Ariel Abbott, PA-CStockton, CA1780334342
- Barrie Abbott, PA-CAnza, CA1861602575
- Elizabeth Abbott, PA-CSan Diego, CA1437540762
- Terri Abbott, P.A.La Jolla, CA1811165566
- Angela Abboud, MMS, PA-CSanta Rosa, CA1114399334
Common questions
What is Catherine L. Barth, PA-C's NPI number?
Catherine L. Barth, PA-C's National Provider Identifier (NPI) is 1184283178, issued on Jun 12, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Catherine L. Barth, PA-C located?
The NPPES record lists a practice address at 2200 Chaucer RD, San Marino, CA, 91108. Phone: (626) 485-4837. Providers update this record themselves, so call before visiting.
How can I verify Catherine L. Barth, PA-C's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Catherine L. Barth, PA-C prescribe under Medicare Part D?
In 2024, Catherine L. Barth, PA-C had 145 Medicare Part D claims for 111 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Catherine L. Barth, PA-C's MIPS final score?
The 2023 MIPS final score is 85.7 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.