Marissa King, PA-C
Physician Assistant · Thousand Oaks, CA
Marissa King, PA-C is a physician assistant with a practice address in Thousand Oaks, California, and NPI 1174259154, issued on Aug 1, 2022. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marissa King
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 3095 Old Conejo RD Ste 200, Thousand Oaks, CA 91320
- Phone
- (888) 367-1850
- Enumerated
- Aug 1, 2022
- Record last updated
- Jan 8, 2026
- Fax
- (805) 222-0323
- Medicare enrollment
- Enrolled (PECOS I20250710004058); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 3095 Old Conejo RD Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sophia LeePhysician Assistant1992669451
- Justin MikesellPhysician Assistant1649991720
Verify Marissa King in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average physician assistant in 2024
367 Medicare Part D claims for 191 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 149 claims were for opioids.
Most prescribed
- Cyclobenzaprine Hcl79 claims
- Hydrocodone-Acetaminophen65 claims
- Oxycodone-Acetaminophen54 claims
- Baclofen46 claims
- Naloxone Hcl40 claims
- Oxycodone Hcl22 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.
Marissa King among 14,451 physician assistant records in California
Marissa King, 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 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
- Graduated2021 · median 2018 among the 7,214 with a school on file
- Record last updated2026 · 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).
40 physician assistant records list a practice address in Thousand Oaks
They are 40 of the 2,434 NPPES records with a practice address in Thousand Oaks, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Thousand Oaks → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kaylie BalvanedaThousand Oaks, CA 913201568357796
- Pauntea Bral, PA-CThousand Oaks, CA 913201184438129
- Sarah Hazany, PA-CNewbury Park, CA 913201093253437
- Jephryn Lee, PAThousand Oaks, CA 913201336800416
- Sophia LeeThousand Oaks, CA 913201992669451
- David Leventer, PAThousand Oaks, CA 913201861121584
- Justin MikesellThousand Oaks, CA 913201649991720
- Cel Kristian MilanThousand Oaks, CA 913201295596245
Common questions
What is Marissa King, PA-C's NPI number?
Marissa King, PA-C's National Provider Identifier (NPI) is 1174259154, issued on Aug 1, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Marissa King, PA-C located?
The NPPES record lists a practice address at 3095 Old Conejo RD Ste 200, Thousand Oaks, CA, 91320. Phone: (888) 367-1850. Providers update this record themselves, so call before visiting.
How can I verify Marissa King, PA-C's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Marissa King, PA-C prescribe under Medicare Part D?
In 2024, Marissa King, PA-C had 367 Medicare Part D claims for 191 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.