Christina Massuros, PA
Physician Assistant · Simi Valley, CA
Christina Massuros, PA is a physician assistant with a practice address in Simi Valley, California, and NPI 1386305076, issued on Jan 4, 2022. Check the license (California 60659, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Christina Massuros
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 60659 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3605 Alamo St Ste 200, Simi Valley, CA 93063
- Phone
- (805) 578-8550
- Enumerated
- Jan 4, 2022
- Record last updated
- Aug 8, 2022
- Entity
- Type 1 · individual
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Verify Christina Massuros in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 60659Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 77.6 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Christina Massuros among 14,451 physician assistant records in California
Christina Massuros, PA 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 fileNo · 50% of these records are
- Record last updated2022 · 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).
35 physician assistant records list a practice address in Simi Valley
They are 35 of the 1,397 NPPES records with a practice address in Simi Valley, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Simi Valley → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Nadia HeloSimi Valley, CA 930631932996402
- Aaron Highsmith, PASimi Valley, CA 930631124290093
- Megan Leeper, PA-CSimi Valley, CA 930631922595701
- Joephillip LobustaSimi Valley, CA 930631861232563
- Mark Oechsli, PACSimi Valley, CA 930631497748149
- Catherine Phillips, PA CSimi Valley, CA 930631336132422
- Linda Rubino, PA-CSimi Valley, CA 930631114054889
- Ingrid Sharpe, PA-CSimi Valley, CA 930631144619784
Common questions
What is Christina Massuros, PA's NPI number?
Christina Massuros, PA's National Provider Identifier (NPI) is 1386305076, issued on Jan 4, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Christina Massuros, PA located?
The NPPES record lists a practice address at 3605 Alamo St Ste 200, Simi Valley, CA, 93063. Phone: (805) 578-8550. Providers update this record themselves, so call before visiting.
How can I verify Christina Massuros, PA's license?
NPPES lists California license number 60659, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
What is Christina Massuros, PA's MIPS final score?
The 2023 MIPS final score is 77.6 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.