NPPES file of Aug 9, 2026

Corey Tremblay, PA-C

Medical Physician Assistant · Modesto, CA

Corey Tremblay, PA-C is a medical physician assistant with a practice address in Modesto, California, and NPI 1598264103, issued on Feb 9, 2018. Check the license (California 55317, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1598264103
Name
Corey Tremblay
Credential
PA-C
Primary taxonomy
Medical Physician Assistant 363AM0700X
License number
55317 CA
Self-reported in NPPES; status is on the state search
Practice location
817 Coffee RD Ste B, Modesto, CA 95355
Phone
(209) 222-6061
Enumerated
Feb 9, 2018
Record last updated
Feb 9, 2018 (not updated in 8 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Corey Tremblay 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 55317
    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
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79% fewer Medicare Part D claims than the average medical physician assistant in 2024

241 Medicare Part D claims for 149 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 32 claims were for opioids.

  1. Corey Tremblay241
  2. Specialty average1,148

Most prescribed

  1. Ondansetron Odt29 claims
  2. Hydrocodone-Acetaminophen26 claims
  3. Cephalexin18 claims
  4. Cefpodoxime Proxetil16 claims
  5. Sulfamethoxazole-Trimethoprim11 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): 94.6 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.

  1. Qualityout of 100 · 30% of the final score76.7
  2. Costout of 100 · 30%97.1
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Corey Tremblay among 3,376 medical physician assistant records in California

Corey Tremblay, 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 2018, is newer than 71% of them.

  • NPI issued2018 · 71% of these records are older, 26% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileNo · 40% of these records are
  • Record last updated2018 · 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. Loren Bauman, PAModesto, CA 953551326155052
  2. David Boone, PA-CModesto, CA 953551861895278
  3. Jeffrey Brayshaw, PAModesto, CA 953551932284338
  4. Dianne David, P.A.Modesto, CA 953551356500037
  5. Delia Hernandez, PA-CModesto, CA 953551174606800
  6. Thomas Kraft, PAModesto, CA 953551306895651
  7. Betty Larrabee, PAModesto, CA 953551700898772
  8. Kristine Lindstrom, PAModesto, CA 953551851558308

Common questions

What is Corey Tremblay, PA-C's NPI number?

Corey Tremblay, PA-C's National Provider Identifier (NPI) is 1598264103, issued on Feb 9, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Corey Tremblay, PA-C located?

The NPPES record lists a practice address at 817 Coffee RD Ste B, Modesto, CA, 95355. Phone: (209) 222-6061. Providers update this record themselves, so call before visiting.

How can I verify Corey Tremblay, PA-C's license?

NPPES lists California license number 55317, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Corey Tremblay, PA-C prescribe under Medicare Part D?

In 2024, Corey Tremblay, PA-C had 241 Medicare Part D claims for 149 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.

What is Corey Tremblay, PA-C's MIPS final score?

The 2023 MIPS final score is 94.6 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.