William Chamberlain
Physician Assistant · Los Angeles, CA
William Chamberlain is a physician assistant with a practice address in Los Angeles, California, and NPI 1760857247, issued on Dec 9, 2015. Check the license (California 53090, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Chamberlain
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 53090 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2515 W Pico Blvd, Los Angeles, CA 90006
- Phone
- (213) 384-4555
- Enumerated
- Dec 9, 2015
- Record last updated
- Oct 4, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (213) 382-9555
- Medicare enrollment
- Enrolled (PECOS I20161019002040); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 2515 W Pico Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gihan Anthony, DDSGeneral Practice Dentistry1225176506
- Anasochil Jimenez, PAPhysician Assistant1033624705
- Stephanie MauricioRegistered Nurse1346979416
- David Sawiris, DDSDentist1427567056
- Haesun Seol, DNPFamily Nurse Practitioner1285903302
- Fabiola Valcin-Lewis, APRN-CNS, PMHNP-BCPerinatal Registered Nurse1518271287
Verify William Chamberlain in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 53090Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17.5 times the Medicare Part D claims of the average physician assistant in 2024
14,551 Medicare Part D claims for 692 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 527 claims were for opioids.
Most prescribed
- Levothyroxine Sodium548 claims
- Pantoprazole Sodium483 claims
- Atorvastatin Calcium465 claims
- Meloxicam399 claims
- Losartan Potassium386 claims
- Prednisone369 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: $643.75
26 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 64,719 providers of this specialty with any payment received $841.65 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.
Bills Medicare through 2 group practices
- Centric HealthBakersfield, CA
- Kern Neurosurgical Institute IncBakersfield, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (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 935 in Los Angeles → All 14,451 in California → Every provider in Los Angeles →
Other physician assistant records in California
- Marcia -Galbraith, PAStockton, CA1407143274
- Danny Abad, PAOrange, CA1477158673
- Lea Dominique Abadies, PATustin, CA1124754254
- Rea Elizabeth Abaniel, P.A.-CSeal Beach, CA1396173621
- Ramina Abbasi, PA-CSignal Hill, CA1093448300
- Ariel Abbott, PA-CStockton, CA1780334342
- Barrie Abbott, PA-CAnza, CA1861602575
- Elizabeth Abbott, PA-CSan Diego, CA1437540762
- Terri Abbott, P.A.La Jolla, CA1811165566
- Angela Abboud, MMS, PA-CSanta Rosa, CA1114399334
Common questions
What is William Chamberlain's NPI number?
William Chamberlain's National Provider Identifier (NPI) is 1760857247, issued on Dec 9, 2015. An NPI identifies a provider in billing; it is not a license.
Where is William Chamberlain located?
The NPPES record lists a practice address at 2515 W Pico Blvd, Los Angeles, CA, 90006. Phone: (213) 384-4555. Providers update this record themselves, so call before visiting.
How can I verify William Chamberlain's license?
NPPES lists California license number 53090, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does William Chamberlain prescribe under Medicare Part D?
In 2024, William Chamberlain had 14,551 Medicare Part D claims for 692 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.