NPPES file of Aug 9, 2026

Thomas A. Bosma, PA-C

Medical Physician Assistant · Santa Barbara, CA

Thomas A. Bosma, PA-C is a medical physician assistant with a practice address in Santa Barbara, California, and NPI 1255434544, issued on Sep 5, 2006. Check the license (California PA18561, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1255434544
Name
Thomas A. Bosma
Credential
PA-C
Primary taxonomy
Medical Physician Assistant 363AM0700X
License number
PA18561 CA
Self-reported in NPPES; status is on the state search
Practice location
504 W Pueblo St, Santa Barbara, CA 93105
Phone
(805) 687-7719
Enumerated
Sep 5, 2006
Record last updated
Mar 7, 2023
Fax
(805) 682-2971
Medicare enrollment
Enrolled (PECOS I20070502000184); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 504 W Pueblo St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jeoffrey Benson, M.D.Pain Medicine (Anesthesiology) Physician1396803201
  2. George Bifano, D.O.Psychiatry Physician1083604920
  3. James Cavins, M.D.Specialist1902822356
  4. Julie Chacko, MDUrology Physician1225020571
  5. Cary Conyers, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1447234216
  6. Diana Lambeth, MFTMarriage & Family Therapist1891904728

Verify Thomas A. Bosma in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PA18561
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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17% fewer Medicare Part D claims than the average medical physician assistant in 2024

957 Medicare Part D claims for 376 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.

  1. Thomas Bosma957
  2. Specialty average1,148

Most prescribed

  1. Tamsulosin Hcl132 claims
  2. Estradiol103 claims
  3. Cephalexin95 claims
  4. Nitrofurantoin Mono-Macro85 claims
  5. Gemtesa76 claims
  6. Silodosin73 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.

Industry payments in 2024: $1,361.28

56 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 16,165 providers of this specialty with any payment received $1,055.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Thomas Bosma$1,361.28
  2. Specialty average$1,055.00

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Urology Specialists OF Santa Barbara IncSanta Barbara, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Thomas A. Bosma among 3,376 medical physician assistant records in California

Thomas A. Bosma, PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% 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 2% of them.

  • NPI issued2006 · 2% of these records are older, 80% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2006 · median 2012 among the 1,347 with a school on file
  • Record last updated2023 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Physician Assistant providers in California

There are 3,376 medical physician assistant records in California.

The 8 medical physician assistant records with the nearest ZIP codes

  1. Ana AlldredgeSanta Barbara, CA 931051215704705
  2. Erica Carleton, P.A.Santa Barbara, CA 931051235241290
  3. Jamie Duncan, P.A.Santa Barbara, CA 931051740561083
  4. Donna Fagan, PASanta Barbara, CA 931051114241106
  5. Sean Fisher, PASanta Barbara, CA 931051154512986
  6. Jennifer Hoyt, PASanta Barbara, CA 931051851328462
  7. Barbara IrishSanta Barbara, CA 931051003363847
  8. Jada MurrielSanta Barbara, CA 931051477388346

Common questions

What is Thomas A. Bosma, PA-C's NPI number?

Thomas A. Bosma, PA-C's National Provider Identifier (NPI) is 1255434544, issued on Sep 5, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Thomas A. Bosma, PA-C located?

The NPPES record lists a practice address at 504 W Pueblo St, Santa Barbara, CA, 93105. Phone: (805) 687-7719. Providers update this record themselves, so call before visiting.

How can I verify Thomas A. Bosma, PA-C's license?

NPPES lists California license number PA18561, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Thomas A. Bosma, PA-C prescribe under Medicare Part D?

In 2024, Thomas A. Bosma, PA-C had 957 Medicare Part D claims for 376 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.