Justin Co
Physician Assistant · Fremont, CA
Justin Co is a physician assistant with a practice address in Fremont, California, and NPI 1326778093, issued on Jun 14, 2022. Check the license (California 63511, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Justin Co
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 63511 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2000 Mowry Ave, Fremont, CA 94538
- Phone
- (510) 818-7200
- Enumerated
- Jun 14, 2022
- Record last updated
- Mar 14, 2025
- Medicare enrollment
- Enrolled (PECOS I20240524002663); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 2000 Mowry Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Suselina Acosta-Goldstein, MDPsychiatry Physician1841557683
- Carmencita Agcaoili, M.D.Critical Care Medicine (Internal Medicine) Physician1285652396
- Paul Aguilera, MDInternal Medicine Physician1023639804
- Nivek Amin, MDAnesthesiology Physician1518288125
- Harry Andrews, MDEmergency Medicine Physician1295865426
- Sophia Antoun, PA-CPhysician Assistant1205513645
Verify Justin Co in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 63511Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average physician assistant in 2024
377 Medicare Part D claims for 181 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 72 claims were for opioids.
Most prescribed
- Amoxicillin121 claims
- Ondansetron Hcl89 claims
- Hydrocodone-Acetaminophen41 claims
- Cephalexin37 claims
- Oxycodone-Acetaminophen27 claims
- Clindamycin 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.
Industry payments in 2024: $379.88
6 payments; by number, the most common kind was education; the largest payer was Medical Device Business Services, Inc. The 64,719 providers of this specialty with any payment received $841.65 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.
Bills Medicare through one group practice
- Sah Orthopaedic AssociatesFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Justin Co among 14,451 physician assistant records in California
Justin Co 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 2022, is newer than 73% of them.
- NPI issued2022 · 73% of these records are older, 20% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2023 · 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).
78 physician assistant records list a practice address in Fremont
They are 78 of the 4,749 NPPES records with a practice address in Fremont, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Fremont → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Jia Afnan, PAFremont, CA 945381376763698
- Jeffrey Cooper, PA-CFremont, CA 945381639239205
- Karen Garn, P.A.Fremont, CA 945381538168067
- Tammi Groom, PA-CFremont, CA 945381952472151
- Keith Jeffrey, PA-CFremont, CA 945381164461745
- Kristi Larock, PAFremont, CA 945381255317350
- Meagan Nguyen, P.A.Fremont, CA 945381639181514
- Judith Pierre, MS, RD, CDEFremont, CA 945381932257490
Common questions
What is Justin Co's NPI number?
Justin Co's National Provider Identifier (NPI) is 1326778093, issued on Jun 14, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Justin Co located?
The NPPES record lists a practice address at 2000 Mowry Ave, Fremont, CA, 94538. Phone: (510) 818-7200. Providers update this record themselves, so call before visiting.
How can I verify Justin Co's license?
NPPES lists California license number 63511, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Justin Co prescribe under Medicare Part D?
In 2024, Justin Co had 377 Medicare Part D claims for 181 beneficiaries; the average among physician assistant prescribers was 830. 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.