NPPES file of Aug 9, 2026

Marissa Stone

Physician Assistant · Los Angeles, CA

Marissa Stone is a physician assistant with a practice address in Los Angeles, California, and NPI 1427870971, issued on Oct 28, 2024. Check the license (California PA66300, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427870971
Name
Marissa Stone
Primary taxonomy
Physician Assistant 363A00000X
License number
PA66300 CA
Self-reported in NPPES; status is on the state search
Practice location
8436 W 3RD St Ste 800, Los Angeles, CA 90048
Phone
(310) 423-9780
Enumerated
Oct 28, 2024
Record last updated
Dec 8, 2025
Fax
(323) 433-7016
Medicare enrollment
Enrolled (PECOS I20250909003500); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest physician assistant records → All 14,451 in California → Look up another NPI →

Also registered at 8436 W 3RD St Ste 800

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Joseph Cooper, M.D.Sports Medicine (Orthopaedic Surgery) Physician1518377241
  2. Ian DworkinPain Medicine (Physical Medicine & Rehabilitation) Physician1861810368
  3. Sara Guerra, MD, FRCSCSurgery of the Hand (Plastic Surgery) Physician1194072777
  4. Farzin Kabaei, MDOrthopaedic Trauma Physician1255655072
  5. Wesley King, M.D.Neurological Surgery Physician1649205394
  6. Daniel Loder, MDPain Medicine Physician1760472500

Verify Marissa Stone 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 PA66300    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
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Docs Health Medical GroupLos Angeles, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Marissa Stone among 14,451 physician assistant records in California

Marissa Stone 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 2024, is newer than 87% of them.

  • NPI issued2024 · 87% of these records are older, 7% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2024 · median 2018 among the 7,214 with a school on file
  • Record last updated2025 · 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).

935 physician assistant records list a practice address in Los Angeles

They are 935 of the 69,537 NPPES records with a practice address in Los Angeles, and 14,451 physician assistant records in California.

All 14,451 in California → Every provider in Los Angeles → Physician Assistant nationwide →

The 8 physician assistant records with the nearest ZIP codes

  1. Jesse Collins, P.A.-CLos Angeles, CA 900481124290028
  2. Nirmeen Haniss-Youssef, PA-CLos Angeles, CA 900481750340246
  3. Lusine Harutyunyan, P.A.Los Angeles, CA 900481528270303
  4. Shraga Katz, PA-CLos Angeles, CA 900481174727523
  5. Elena Klimenko, PA-CLos Angeles, CA 900481134367709
  6. Nafiseh Moghadam, P.A.Los Angeles, CA 900481922023084
  7. Rebecca NaorWest Hollywood, CA 900481235363136
  8. Natalie Ngaripin, PACLos Angeles, CA 900481740225655

Common questions

What is Marissa Stone's NPI number?

Marissa Stone's National Provider Identifier (NPI) is 1427870971, issued on Oct 28, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Marissa Stone located?

The NPPES record lists a practice address at 8436 W 3RD St Ste 800, Los Angeles, CA, 90048. Phone: (310) 423-9780. Providers update this record themselves, so call before visiting.

How can I verify Marissa Stone's license?

NPPES lists California license number PA66300, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.