Tiffani L. Williams, PA-C
Physician Assistant · Morton, IL
Tiffani L. Williams, PA-C is a physician assistant with a practice address in Morton, Illinois, and NPI 1447589650, issued on Dec 17, 2009. Check the license (Illinois 085-003619, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tiffani L. Williams
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 085-003619 IL
Self-reported in NPPES; status is on the state search - Practice location
- 435 Maxine Dr, Morton, IL 61550
- Phone
- (309) 263-2424
- Enumerated
- Dec 17, 2009
- Record last updated
- Oct 23, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (309) 284-2244
- Medicare enrollment
- Enrolled (PECOS I20100527000265); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 435 Maxine Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Donald BakerPediatrics Physician1457433492
- Stefanie ClarkePediatric Nurse Practitioner1386300713
- Deborah Collins, PA-CPhysician Assistant1821000217
- Dana DeshonNurse Practitioner1578645537
- Darlene Esken, APNNurse Practitioner1710346309
- Susanna Frusti, APRN, FNP-CFamily Nurse Practitioner1285509075
Verify Tiffani L. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 085-003619Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average physician assistant in 2024
2,243 Medicare Part D claims for 154 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 18 claims were for opioids.
Most prescribed
- Atorvastatin Calcium136 claims
- Omeprazole98 claims
- Lisinopril86 claims
- Levothyroxine Sodium77 claims
- Metformin Hcl66 claims
- Amlodipine Besylate62 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): 82.1 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).
Bills Medicare through one group practice
- Osf Multi-Specialty GroupPolo, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tiffani L. Williams among 4,926 physician assistant records in Illinois
Tiffani L. Williams, PA-C 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 2009, is newer than 19% of them.
- NPI issued2009 · 19% of these records are older, 78% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2009 · median 2019 among the 3,407 with a school on file
- Record last updated2019 · 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).
4 physician assistant records list a practice address in Morton
They are 4 of the 221 NPPES records with a practice address in Morton, and 4,926 physician assistant records in Illinois.
All 4,926 in Illinois → Every provider in Morton → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Alyssa Arguelles, PAMorton, IL 615501770988511
- Deborah Collins, PA-CMorton, IL 615501821000217
- Chris Wade, PA-CMorton, IL 615501568425924
- Benjamin HahnGermantown Hills, IL 615481174254247
- Chelsea Brush, PA-C MSPekin, IL 615541386958031
- Jessica Gheewala, PA-CPekin, IL 615541174315113
- Robert Jackson, PA-CPekin, IL 615541174736029
- Jamie Jelinek, PA-CPekin, IL 615541811241995
Common questions
What is Tiffani L. Williams, PA-C's NPI number?
Tiffani L. Williams, PA-C's National Provider Identifier (NPI) is 1447589650, issued on Dec 17, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Tiffani L. Williams, PA-C located?
The NPPES record lists a practice address at 435 Maxine Dr, Morton, IL, 61550. Phone: (309) 263-2424. Providers update this record themselves, so call before visiting.
How can I verify Tiffani L. Williams, PA-C's license?
NPPES lists Illinois license number 085-003619, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Tiffani L. Williams, PA-C prescribe under Medicare Part D?
In 2024, Tiffani L. Williams, PA-C had 2,243 Medicare Part D claims for 154 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Tiffani L. Williams, PA-C's MIPS final score?
The 2023 MIPS final score is 82.1 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.