Gretchen F. Tweed, PA-C
Physician Assistant · Oakbrook Terrace, IL
Gretchen F. Tweed, PA-C is a physician assistant with a practice address in Oakbrook Terrace, Illinois, and NPI 1386919256, issued on Mar 12, 2012. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gretchen F. Tweed
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 2939 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Lincoln Ctr Ste 1030, Oakbrook Terrace, IL 60181
- Phone
- (312) 319-1031
- Enumerated
- Mar 12, 2012
- Record last updated
- Jan 22, 2026
- Medicaid ID
- 15109577 CO
- Medicare enrollment
- Enrolled (PECOS I20120725000935); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 1 Lincoln Ctr Ste 1030
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hermance Fortune, NURSE PRACTITIONERFamily Nurse Practitioner1053896654
- Jennifer Harwell, RN, FNP-CFamily Nurse Practitioner1649685462
Verify Gretchen F. Tweed in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average physician assistant in 2024
952 Medicare Part D claims for 92 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Potassium Chloride45 claims
- Losartan Potassium39 claims
- Atorvastatin Calcium35 claims
- Levothyroxine Sodium35 claims
- Escitalopram Oxalate34 claims
- Omeprazole30 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: $15.20
1 payment: food and beverage; the largest payer was Abbvie Inc. 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 one group practice
- Comprehensive Rehab Consultants PLLCLafayette, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gretchen F. Tweed among 4,926 physician assistant records in Illinois
Gretchen F. Tweed, 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 2012, is newer than 27% of them.
- NPI issued2012 · 27% of these records are older, 71% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2007 · median 2019 among the 3,407 with a school on file
- Record last updated2026 · 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).
12 physician assistant records list a practice address in Oakbrook Terrace
They are 12 of the 282 NPPES records with a practice address in Oakbrook Terrace, and 4,926 physician assistant records in Illinois.
All 4,926 in Illinois → Every provider in Oakbrook Terrace → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Dareen Abu-HashishOakbrook Terrace, IL 601811134083504
- Katherine Bratkiv, PA-COakbrook Terrace, IL 601811063140135
- Emily Davis, PA-COakbrook Terrace, IL 601811043180532
- Meagan DonnerOakbrook Terrace, IL 601811124648118
- Jessica FerraroOakbrook Terrace, IL 601811124599592
- Julie Jourdan, PA-COakbrook Terrace, IL 601811962647917
- Sophia Lazzaroni, PAOakbrook Terrace, IL 601811194532457
- Adelin Nita, PA COakbrook Terrace, IL 601811649237959
Common questions
What is Gretchen F. Tweed, PA-C's NPI number?
Gretchen F. Tweed, PA-C's National Provider Identifier (NPI) is 1386919256, issued on Mar 12, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Gretchen F. Tweed, PA-C located?
The NPPES record lists a practice address at 1 Lincoln Ctr Ste 1030, Oakbrook Terrace, IL, 60181. Phone: (312) 319-1031. Providers update this record themselves, so call before visiting.
How can I verify Gretchen F. Tweed, PA-C's license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Gretchen F. Tweed, PA-C prescribe under Medicare Part D?
In 2024, Gretchen F. Tweed, PA-C had 952 Medicare Part D claims for 92 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.