Levi Benjamin Williamson, PA-C
Medical Physician Assistant · Rancho Santa Margarita, CA
Levi Benjamin Williamson, PA-C is a medical physician assistant with a practice address in Rancho Santa Margarita, California, and NPI 1932672615, issued on Jan 6, 2019. Check the license (California 57670, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Levi Benjamin Williamson
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 57670 CA
Self-reported in NPPES; status is on the state search - Practice location
- 22431 Antonio Pkwy # B160-613, Rancho Santa Margarita, CA 92688
- Phone
- (855) 727-2251
- Enumerated
- Jan 6, 2019
- Record last updated
- May 28, 2025
- Fax
- (855) 727-2251
- Medicare enrollment
- Enrolled (PECOS I20200903002717); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 22431 Antonio Pkwy # B160-613
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Fatema Dewji, PHYSICIAN ASSISTANTPhysician Assistant1609420348
- Robert Frost, PA-CSurgical Physician Assistant1114044633
- Kyle Green, PA-CSurgical Physician Assistant1194246041
Verify Levi Benjamin Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 57670Check 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): 80.6 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).
Industry payments in 2024: $239.33
2 payments; by number, the most common kind was food and beverage; the largest payer was Ethicon US, LLC. The 16,165 providers of this specialty with any payment received $1,055.00 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.
3 hospitals and group practices
- Eisenhower Medical CenterRancho Mirage, CA · Acute Care Hospitals4 of 5 stars
- Arch Health Partners IncPoway, CA
- Physician Assistant Specialists-California IncRancho Santa Margarita, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Levi Benjamin Williamson among 3,376 medical physician assistant records in California
Levi Benjamin Williamson, PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% 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 74% of them.
- NPI issued2019 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2019 · median 2012 among the 1,347 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Rancho Santa Margarita → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Ryan Ah San, PA-CRancho Santa Margarita, CA 926881013181346
- Tri Tran, PA-CRancho Santa Margarita, CA 926881427447713
- Barbara Witowska, MS PACRancho Santa Margarita, CA 926881013034230
- Jaehyun Cho, PAMission Viejo, CA 926911053952002
- Jessica Cummings, PA-CMission Viejo, CA 926911033480942
- Nafise Dolan, PA-CMission Viejo, CA 926911588260616
- Nicole Franklin, P.A.-CMission Viejo, CA 926911215023718
- Natasha Maylor, PA-CMission Viejo, CA 926911275497745
Common questions
What is Levi Benjamin Williamson, PA-C's NPI number?
Levi Benjamin Williamson, PA-C's National Provider Identifier (NPI) is 1932672615, issued on Jan 6, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Levi Benjamin Williamson, PA-C located?
The NPPES record lists a practice address at 22431 Antonio Pkwy # B160-613, Rancho Santa Margarita, CA, 92688. Phone: (855) 727-2251. Providers update this record themselves, so call before visiting.
How can I verify Levi Benjamin Williamson, PA-C's license?
NPPES lists California license number 57670, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
What is Levi Benjamin Williamson, PA-C's MIPS final score?
The 2023 MIPS final score is 80.6 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.