William Flores, PA
Physician Assistant · Chicago, IL
William Flores, PA is a physician assistant with a practice address in Chicago, Illinois, and NPI 1497784003, issued on Jul 3, 2006. Check the license (Illinois 085002200, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Flores
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 085002200 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3860 W Ogden Ave, Chicago, IL 60623
- Phone
- (773) 843-3601
- Enumerated
- Jul 3, 2006
- Record last updated
- Feb 2, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (773) 843-2704
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 3860 W Ogden Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lars Armainsson, MDInternal Medicine Physician1336259514
Verify William Flores in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 085002200Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average physician assistant in 2024
117 Medicare Part D claims for 85 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 30 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen21 claims
- Cyclobenzaprine Hcl16 claims
- Sulfamethoxazole-Trimethoprim11 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): 100 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).
William Flores among 4,926 physician assistant records in Illinois
William Flores, PA is one of 4,926 physician assistant records with a practice address in Illinois. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 88% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2009 · 35% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,445 physician assistant records list a practice address in Chicago
They are 1,445 of the 63,379 NPPES records with a practice address in Chicago, and 4,926 physician assistant records in Illinois.
All 4,926 in Illinois → Every provider in Chicago → Physician Assistant nationwide →
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- Ana Gomez, PAChicago, IL 606231144473109
- Lindsay McCracken, P.A.-CChicago, IL 606231003956640
Common questions
What is William Flores, PA's NPI number?
William Flores, PA's National Provider Identifier (NPI) is 1497784003, issued on Jul 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Flores, PA located?
The NPPES record lists a practice address at 3860 W Ogden Ave, Chicago, IL, 60623. Phone: (773) 843-3601. Providers update this record themselves, so call before visiting.
How can I verify William Flores, PA's license?
NPPES lists Illinois license number 085002200, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does William Flores, PA prescribe under Medicare Part D?
In 2024, William Flores, PA had 117 Medicare Part D claims for 85 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is William Flores, PA's MIPS final score?
The 2023 MIPS final score is 100 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.