David Williams
Physician Assistant · Redlands, CA
David Williams is a physician assistant with a practice address in Redlands, California, and NPI 1336706530, issued on May 22, 2019. Check the license (California 57409, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- David Williams
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 57409 CA
Self-reported in NPPES; status is on the state search - Practice location
- 201 Brookside Ave Unit 744, Redlands, CA 92373
- Phone
- (909) 335-5500
- Enumerated
- May 22, 2019
- Record last updated
- Sep 26, 2023
- Medicaid ID
- DCWILLIAMS19 CA
- Medicare enrollment
- Enrolled (PECOS I20191231002017); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify David 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 57409Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average physician assistant in 2024
299 Medicare Part D claims for 222 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Albuterol Sulfate Hfa36 claims
- Amoxicillin-Clavulanate Potass27 claims
- Doxycycline Hyclate20 claims
- Cephalexin19 claims
- Ibuprofen19 claims
- Ondansetron Odt13 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.
Bills Medicare through one group practice
- Southern California Emergency MedicineSan Bernardino, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Williams among 14,451 physician assistant records in California
David Williams 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 2019, is newer than 56% of them.
- NPI issued2019 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2019 · median 2018 among the 7,214 with a school on file
- Record last updated2023 · 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).
71 physician assistant records list a practice address in Redlands
They are 71 of the 2,498 NPPES records with a practice address in Redlands, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Redlands → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Natalya BallardRedlands, CA 923731093989949
- Julee Brice, P.A-CRedlands, CA 923731184664070
- Christopher Clark, P.A-CRedlands, CA 923731467568493
- Jennifer Ehteshami, PA-CRedlands, CA 923731255492666
- Heidi Gauthreaux, P.A-CRedlands, CA 923731437265105
- Rae-Lynn Ghosh, P.A.Redlands, CA 923731477665602
- Laura Houck, PA-CRedlands, CA 923731780871400
- Sarah Johnson, P.A-CRedlands, CA 923731306958236
Common questions
What is David Williams's NPI number?
David Williams's National Provider Identifier (NPI) is 1336706530, issued on May 22, 2019. An NPI identifies a provider in billing; it is not a license.
Where is David Williams located?
The NPPES record lists a practice address at 201 Brookside Ave Unit 744, Redlands, CA, 92373. Phone: (909) 335-5500. Providers update this record themselves, so call before visiting.
How can I verify David Williams's license?
NPPES lists California license number 57409, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does David Williams prescribe under Medicare Part D?
In 2024, David Williams had 299 Medicare Part D claims for 222 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.