Hanna Marie Massee, PA-C
Physician Assistant · Fairfield, CA
Hanna Marie Massee, PA-C is a physician assistant with a practice address in Fairfield, California, and NPI 1487298667, issued on Oct 31, 2019. Check the license (California PA57390, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Hanna Marie Massee
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA57390 CA
Self-reported in NPPES; status is on the state search - Practice location
- 480 Chadbourne RD Ste 201, Fairfield, CA 94534
- Phone
- (707) 399-4500
- Enumerated
- Oct 31, 2019
- Record last updated
- Apr 13, 2023
- Fax
- (707) 399-9410
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 480 Chadbourne RD Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Monica Beas, PA-CPhysician Assistant1558049874
Verify Hanna Marie Massee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA57390Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% more Medicare Part D claims than the average physician assistant in 2024
1,138 Medicare Part D claims for 297 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Ketoconazole163 claims
- Triamcinolone Acetonide149 claims
- Dupixent Pen67 claims
- Clobetasol Propionate64 claims
- Tacrolimus63 claims
- Minoxidil61 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): 74.8 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).
Industry payments in 2024: $3,498.63
162 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Hanna Marie Massee among 14,451 physician assistant records in California
Hanna Marie Massee, 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 2019, is newer than 56% of them.
- NPI issued2019 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2023 · 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
- Mara Adelman, PHYSICIANS ASST PAFairfield, CA 945341124053483
- Jonathan Delgado-Lopez, PA-CFairfield, CA 945341548738198
- Judith Flandez, PA-CFairfield, CA 945341316482250
- Taylor Garcia, PA-CFairfield, CA 945341760056592
- Samantha Guy, PAFairfield, CA 945341467891366
- Amy Keyes, PA-CFairfield, CA 945341689046310
- Christine Knob, PHYSICIAN ASSISTANTFairfield, CA 945341740313584
- Inna Markiv, P.A.Fairfield, CA 945341952480451
Common questions
What is Hanna Marie Massee, PA-C's NPI number?
Hanna Marie Massee, PA-C's National Provider Identifier (NPI) is 1487298667, issued on Oct 31, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Hanna Marie Massee, PA-C located?
The NPPES record lists a practice address at 480 Chadbourne RD Ste 201, Fairfield, CA, 94534. Phone: (707) 399-4500. Providers update this record themselves, so call before visiting.
How can I verify Hanna Marie Massee, PA-C's license?
NPPES lists California license number PA57390, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Hanna Marie Massee, PA-C prescribe under Medicare Part D?
In 2024, Hanna Marie Massee, PA-C had 1,138 Medicare Part D claims for 297 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Hanna Marie Massee, PA-C's MIPS final score?
The 2023 MIPS final score is 74.8 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.