Amy Sage Thomsen, PA-C
Physician Assistant · Fairfield, CA
Amy Sage Thomsen, PA-C is a physician assistant with a practice address in Fairfield, California, and NPI 1043449119, issued on Jul 9, 2009. Check the license (California 20370, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Amy Sage Thomsen
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 20370 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 B Gale Wilson Blvd, Fairfield, CA 94533
- Phone
- (707) 646-5818
- Enumerated
- Jul 9, 2009
- Record last updated
- Oct 29, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1200 B Gale Wilson Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Amy Sage Thomsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 20370Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average physician assistant in 2024
200 Medicare Part D claims for 150 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 19 claims were for opioids.
Most prescribed
- Naproxen28 claims
- Cephalexin21 claims
- Cyclobenzaprine Hcl14 claims
- Doxycycline Hyclate12 claims
- Hydrocodone-Acetaminophen12 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.
Amy Sage Thomsen among 14,451 physician assistant records in California
Amy Sage Thomsen, PA-C 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 2009, is newer than 25% of them.
- NPI issued2009 · 25% of these records are older, 73% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2014 · 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).
36 physician assistant records list a practice address in Fairfield
They are 36 of the 3,595 NPPES records with a practice address in Fairfield, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Fairfield → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Lei Wena HermeFairfield, CA 945331033995535
- Lyubov Lupyan-Teytelman, P.A.Fairfield, CA 945331033230693
- Shannon Malouf, PA-CFairfield, CA 945331063857977
- Janette Parker, PA-CFairfield, CA 945331881315430
- Le'Anna Paul, PA-CFairfield, CA 945331740358605
- Auxsophene Portier-Jones, PAFairfield, CA 945331972662674
- Kaitlyn RileyFairfield, CA 945331659945749
- Hayley Risse, PAFairfield, CA 945331982352852
Common questions
What is Amy Sage Thomsen, PA-C's NPI number?
Amy Sage Thomsen, PA-C's National Provider Identifier (NPI) is 1043449119, issued on Jul 9, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Amy Sage Thomsen, PA-C located?
The NPPES record lists a practice address at 1200 B Gale Wilson Blvd, Fairfield, CA, 94533. Phone: (707) 646-5818. Providers update this record themselves, so call before visiting.
How can I verify Amy Sage Thomsen, PA-C's license?
NPPES lists California license number 20370, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Amy Sage Thomsen, PA-C prescribe under Medicare Part D?
In 2024, Amy Sage Thomsen, PA-C had 200 Medicare Part D claims for 150 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.