Mara Cathryn Weaver, PA-C
Physician Assistant · Chicago, IL
Mara Cathryn Weaver, PA-C is a physician assistant with a practice address in Chicago, Illinois, and NPI 1083361778, issued on Mar 3, 2022. Check the license (Illinois 085.009178, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mara Cathryn Weaver
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 085.009178 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1611 W Harrison St Ste 400, Chicago, IL 60612
- Phone
- (877) 632-6637
- Enumerated
- Mar 3, 2022
- Record last updated
- Jul 13, 2023
- Fax
- (708) 409-5179
- Medicare enrollment
- Enrolled (PECOS I20220907003197); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 1611 W Harrison St Ste 400
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mara Cathryn Weaver in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 085.009178Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average physician assistant in 2024
154 Medicare Part D claims for 64 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 64 claims were for opioids.
Most prescribed
- Ondansetron Odt47 claims
- Hydrocodone-Acetaminophen42 claims
- Clindamycin Hcl22 claims
- Oxycodone Hcl14 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): 71 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: $247.56
4 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. 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
- Orthomidwest, PLLCChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mara Cathryn Weaver among 4,926 physician assistant records in Illinois
Mara Cathryn Weaver, 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 2022, is newer than 71% of them.
- NPI issued2022 · 71% of these records are older, 22% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2022 · median 2019 among the 3,407 with a school on file
- Record last updated2023 · 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 →
The 8 physician assistant records with the nearest ZIP codes
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Common questions
What is Mara Cathryn Weaver, PA-C's NPI number?
Mara Cathryn Weaver, PA-C's National Provider Identifier (NPI) is 1083361778, issued on Mar 3, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Mara Cathryn Weaver, PA-C located?
The NPPES record lists a practice address at 1611 W Harrison St Ste 400, Chicago, IL, 60612. Phone: (877) 632-6637. Providers update this record themselves, so call before visiting.
How can I verify Mara Cathryn Weaver, PA-C's license?
NPPES lists Illinois license number 085.009178, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Mara Cathryn Weaver, PA-C prescribe under Medicare Part D?
In 2024, Mara Cathryn Weaver, PA-C had 154 Medicare Part D claims for 64 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Mara Cathryn Weaver, PA-C's MIPS final score?
The 2023 MIPS final score is 71 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.