Lauren Williams, PA-C
Medical Physician Assistant · Petaluma, CA
Lauren Williams, PA-C is a medical physician assistant with a practice address in Petaluma, California, and NPI 1437563624, issued on Jun 16, 2014. Check the license (California 51649, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Lauren Williams
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 51649 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1179 N Mcdowell Blvd, Petaluma, CA 94954
- Phone
- (707) 559-7500
- Enumerated
- Jun 16, 2014
- Entity
- Type 1 · individual
Also registered at 1179 N Mcdowell Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lauren Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 51649Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
69% more Medicare Part D claims than the average medical physician assistant in 2024
1,925 Medicare Part D claims for 793 beneficiaries, against an average of 1,139 among the 25,090 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 79 claims were for opioids.
Most prescribed
- Atorvastatin Calcium88 claims
- Lisinopril70 claims
- Gabapentin59 claims
- Amlodipine Besylate48 claims
- Levothyroxine Sodium46 claims
- Ozempic43 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.
Industry payments in 2024: $22.65
1 payment, mostly food and beverage; the largest payer was Novo Nordisk Inc. The 16,940 providers of this specialty with any payment received $1,050.90 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.
Medical Physician Assistant providers in California
There are 3,489 medical physician assistant records in California.
Other medical physician assistant records in California
- Bridget Abajian, PA-CLos Angeles, CA1518677061
- Crispin Abbott, PHYSICIAN ASSISTANTThousand Oaks, CA1063467926
- Abdol Hamid Abdali Hajiabadi, P.A.Santa Ana, CA1285747964
- Jilbert Abnoosian, PALynwood, CA1447300314
- Reema Aboelrish, PA-CFresno, CA1376466144
- Sakina Abowath, P.A.Diamond Bar, CA1326287525
- Selin Abraamyan, PA-CGlendale, CA1144795899
- Antonious Abraham, PA-CCovina, CA1003434275
- Michelle AbrahamSacramento, CA1952875957
- Therese Abraham, P.A.-CGlendale, CA1063726586
Common questions
What is Lauren Williams, PA-C's NPI number?
Lauren Williams, PA-C's National Provider Identifier (NPI) is 1437563624, issued on Jun 16, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Lauren Williams, PA-C located?
The NPPES record lists a practice address at 1179 N Mcdowell Blvd, Petaluma, CA, 94954. Phone: (707) 559-7500. Providers update this record themselves, so call before visiting.
How can I verify Lauren Williams, PA-C's license?
NPPES lists California license number 51649, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Lauren Williams, PA-C prescribe under Medicare Part D?
In 2024, Lauren Williams, PA-C had 1,925 Medicare Part D claims for 793 beneficiaries; the average among medical physician assistant prescribers was 1,139. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.