Brian John Costello, PHYSICIAN ASSISTANT
Surgical Physician Assistant · Walnut Creek, CA
Brian John Costello, PHYSICIAN ASSISTANT is a surgical physician assistant with a practice address in Walnut Creek, California, and NPI 1396833257, issued on Oct 10, 2006. Check the license (California PA15532, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Brian John Costello
- Credential
- PHYSICIAN ASSISTANT
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License number
- PA15532 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2405 Shadelands Dr Ste 300, Walnut Creek, CA 94598
- Phone
- (925) 939-8585
- Enumerated
- Oct 10, 2006
- Record last updated
- Jan 23, 2023
- Medicare enrollment
- Enrolled (PECOS I20120214000945); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 1,075 in California → Look up another NPI →
Also registered at 2405 Shadelands Dr Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cherlyn Alferos, FNPFamily Nurse Practitioner1568155430
- Petra Cardona, PA-CSurgical Physician Assistant1851996573
- Danielle Chapman, NPNurse Practitioner1720930217
- Mark Christiansen, MDEndocrinology, Diabetes & Metabolism Physician1821108218
- Kathleen Grant, PHYSICIAN ASSISTANTSurgical Physician Assistant1700125440
- Sean Griffiths, D.O.Orthopaedic Surgery Physician1457705667
Verify Brian John Costello in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA15532Check 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% more Medicare Part D claims than the average surgical physician assistant in 2024
555 Medicare Part D claims for 163 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 161 claims were for opioids.
Most prescribed
- Oxycodone Hcl139 claims
- Ondansetron Odt133 claims
- Naloxone Hcl118 claims
- Meloxicam89 claims
- Eliquis23 claims
- Tramadol Hcl14 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): 84.9 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
- Permanente Medical Group IncVallejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian John Costello among 1,075 surgical physician assistant records in California
Brian John Costello, PHYSICIAN ASSISTANT is one of 1,075 surgical physician assistant records with a practice address in California. 79% 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, 74% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2000 · median 2012 among the 649 with a school on file
- Record last updated2023 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Physician Assistant providers in California
There are 1,075 surgical physician assistant records in California.
All 1,075 in California → Every provider in Walnut Creek → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- David Brand, P.A.Walnut Creek, CA 945981346366556
- Bridget Garrehy, P.A.Walnut Creek, CA 945981710250865
- Jennifer Hayashi, P.A.Walnut Creek, CA 945981184959033
- Mariel Heller-Benson, PA-CWalnut Creek, CA 945981891083408
- Patricia Loo, P.A.Walnut Creek, CA 945981083755862
- Kevin Lowe, PA-CWalnut Creek, CA 945981659644870
- Thomas Markiewith, P.A.Walnut Creek, CA 945981427086149
- Christine Martinez, P.A.-CWalnut Creek, CA 945981871650523
Common questions
What is Brian John Costello, PHYSICIAN ASSISTANT's NPI number?
Brian John Costello, PHYSICIAN ASSISTANT's National Provider Identifier (NPI) is 1396833257, issued on Oct 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian John Costello, PHYSICIAN ASSISTANT located?
The NPPES record lists a practice address at 2405 Shadelands Dr Ste 300, Walnut Creek, CA, 94598. Phone: (925) 939-8585. Providers update this record themselves, so call before visiting.
How can I verify Brian John Costello, PHYSICIAN ASSISTANT's license?
NPPES lists California license number PA15532, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Brian John Costello, PHYSICIAN ASSISTANT prescribe under Medicare Part D?
In 2024, Brian John Costello, PHYSICIAN ASSISTANT had 555 Medicare Part D claims for 163 beneficiaries; the average among surgical physician assistant prescribers was 304. Part D covers Medicare prescriptions only.
What is Brian John Costello, PHYSICIAN ASSISTANT's MIPS final score?
The 2023 MIPS final score is 84.9 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.