William C. Warren, P.A.-C.
Medical Physician Assistant · Richmond, VA
William C. Warren, P.A.-C. is a medical physician assistant with a practice address in Richmond, Virginia, and NPI 1487915716, issued on Jun 4, 2012. Check the license (Virginia 0110003894, as entered in NPPES) with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William C. Warren
- Credential
- P.A.-C.
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 0110003894 VA
Self-reported in NPPES; status is on the state search - Practice location
- 5855 Bremo RD Ste 706, Richmond, VA 23226
- Phone
- (804) 285-8506
- Enumerated
- Jun 4, 2012
- Record last updated
- Jul 21, 2022
- Fax
- (804) 497-5469
- Medicare enrollment
- Enrolled (PECOS I20120716000553); accepts Medicare assignment
- Medical or professional school
- Eastern Virginia Medical School, 2012
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 941 in Virginia → Look up another NPI →
Also registered at 5855 Bremo RD Ste 706
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hamza Khalid, M.D.Gastroenterology Physician1063667608
- Reva Russ, FNPFamily Nurse Practitioner1609536317
- Andy Thanjan, M.D.Gastroenterology Physician1306083696
Verify William C. Warren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this profession
Search for license 0110003894Check 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 medical physician assistant in 2024
409 Medicare Part D claims for 179 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium80 claims
- Gavilyte-G43 claims
- Omeprazole39 claims
- Creon32 claims
- Linzess32 claims
- Esomeprazole Magnesium22 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.6 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: $1,029.49
44 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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.
Bills Medicare through one group practice
- Gastrointestinal Specialists LLCRichmond, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William C. Warren among 941 medical physician assistant records in Virginia
William C. Warren, P.A.-C. is one of 941 medical physician assistant records with a practice address in Virginia. 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 2012, is newer than 47% of them.
- NPI issued2012 · 47% of these records are older, 48% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2012 · median 2014 among the 525 with a school on file
- Record last updated2022 · 52% 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 Virginia 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 Virginia
There are 941 medical physician assistant records in Virginia.
All 941 in Virginia → Every provider in Richmond → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Leigh Amateau, P.A.Richmond, VA 232261770677510
- Nancy Broda, PACRichmond, VA 232261265625545
- Thomas Cawley, PA-CRichmond, VA 232261568866010
- Margaret Esposito, PA-CRichmond, VA 232261063826618
- Michael Fillinger, PA-CRichmond, VA 232261699004556
- Stephanie Gallegos, P.A.-CRichmond, VA 232261104051960
- Mary McFerren, PA-CRichmond, VA 232261285778563
- Elizabeth Rhamy, PARichmond, VA 232261831398171
Common questions
What is William C. Warren, P.A.-C.'s NPI number?
William C. Warren, P.A.-C.'s National Provider Identifier (NPI) is 1487915716, issued on Jun 4, 2012. An NPI identifies a provider in billing; it is not a license.
Where is William C. Warren, P.A.-C. located?
The NPPES record lists a practice address at 5855 Bremo RD Ste 706, Richmond, VA, 23226. Phone: (804) 285-8506. Providers update this record themselves, so call before visiting.
How can I verify William C. Warren, P.A.-C.'s license?
NPPES lists Virginia license number 0110003894, as entered by the provider. Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does William C. Warren, P.A.-C. prescribe under Medicare Part D?
In 2024, William C. Warren, P.A.-C. had 409 Medicare Part D claims for 179 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is William C. Warren, P.A.-C.'s MIPS final score?
The 2023 MIPS final score is 84.6 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.