Mayson Lyn Marcy, PA-C
Physician Assistant · Chicago, IL
Mayson Lyn Marcy, PA-C is a physician assistant with a practice address in Chicago, Illinois, and NPI 1134828221, issued on Feb 27, 2023. Check the license (Illinois 085011338, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mayson Lyn Marcy
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 085011338 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2418 N Ashland Ave, Chicago, IL 60614
- Phone
- (773) 900-8330
- Enumerated
- Feb 27, 2023
- Record last updated
- Oct 3, 2025
- Fax
- (312) 761-1855
- Medicare enrollment
- Enrolled (PECOS I20250905001191); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 2418 N Ashland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carly MirowitzMedical Physician Assistant1679090625
- Robert Radtke, PA-CPhysician Assistant1619512019
Verify Mayson Lyn Marcy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 085011338Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average physician assistant in 2024
135 Medicare Part D claims for 87 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.
Most prescribed
- Amoxicillin-Clavulanate Potass20 claims
- Nitrofurantoin Mono-Macro14 claims
- Azithromycin12 claims
- Paxlovid12 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.
Mayson Lyn Marcy among 4,926 physician assistant records in Illinois
Mayson Lyn Marcy, 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 2023, is newer than 78% of them.
- NPI issued2023 · 78% of these records are older, 17% 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 updated2025 · 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
- Lindsey Ashley, PAChicago, IL 606141700210473
- Jenna Benoit, PA-CChicago, IL 606141790110666
- Gayle Blake, P.A.C.Chicago, IL 606141487693461
- Rebecca Bruce, PHYSICIAN ASSISTANTChicago, IL 606141104169077
- Madhavi Deshmukh, PA-CChicago, IL 606141023165362
- Noah Goss, PA-CChicago, IL 606141720364953
- Nadya Kohen, PAChicago, IL 606141063721264
- Michelle Krischel, M.S., PA-C, ATC,Chicago, IL 606141871980516
Common questions
What is Mayson Lyn Marcy, PA-C's NPI number?
Mayson Lyn Marcy, PA-C's National Provider Identifier (NPI) is 1134828221, issued on Feb 27, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Mayson Lyn Marcy, PA-C located?
The NPPES record lists a practice address at 2418 N Ashland Ave, Chicago, IL, 60614. Phone: (773) 900-8330. Providers update this record themselves, so call before visiting.
How can I verify Mayson Lyn Marcy, PA-C's license?
NPPES lists Illinois license number 085011338, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Mayson Lyn Marcy, PA-C prescribe under Medicare Part D?
In 2024, Mayson Lyn Marcy, PA-C had 135 Medicare Part D claims for 87 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.