Cynthia Shackleton Martin, PA-C
Medical Physician Assistant · Green Bay, WI
Cynthia Shackleton Martin, PA-C is a medical physician assistant with a practice address in Green Bay, Wisconsin, and NPI 1821198839, issued on Sep 22, 2006. Check the license (Wisconsin 1359-023, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cynthia Shackleton Martin
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 1359-023 WI
Self-reported in NPPES; status is on the state search - Practice location
- 835 S Van Buren St, Green Bay, WI 54301
- Phone
- (920) 433-8384
- Enumerated
- Sep 22, 2006
- Record last updated
- Feb 23, 2022
- Medicare enrollment
- Enrolled (PECOS I20100720000985); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 687 in Wisconsin → Look up another NPI →
Also registered at 835 S Van Buren St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Richard Amankwah, MDHospitalist Physician1164712741
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Verify Cynthia Shackleton Martin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 1359-023Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average medical physician assistant in 2024
335 Medicare Part D claims for 238 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Prednisone54 claims
- Amoxicillin-Clavulanate Potass47 claims
- Cephalexin27 claims
- Cefdinir18 claims
- Azithromycin14 claims
- Fluticasone Propionate14 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 MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- St Clare Memorial Hospital, IncOconto Falls, WI
- St Vincent Hospital-Hospital Sisters-Third Order OF St FrancisShawano, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cynthia Shackleton Martin among 687 medical physician assistant records in Wisconsin
Cynthia Shackleton Martin, PA-C is one of 687 medical physician assistant records with a practice address in Wisconsin. 79% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 72% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2001 · median 2016 among the 479 with a school on file
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in Wisconsin
There are 687 medical physician assistant records in Wisconsin.
All 687 in Wisconsin → Every provider in Green Bay → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- William Conrad, PAGreen Bay, WI 543011801898564
- Eric Danihel, PA-CGreen Bay, WI 543011285184804
- Jacquelyn Phillips, APNPGreen Bay, WI 543011609826171
- Gail Bosco, PAGreen Bay, WI 543021538205380
- Jenna Hanson, PA-CGreen Bay, WI 543031003476276
- Megan Leon, PA-CGreen Bay, WI 543031356900757
- Miranda Cseter, PA-CGreen Bay, WI 543131275049140
- Kathleen Maas, PA-CSuamico, WI 543131811942089
Common questions
What is Cynthia Shackleton Martin, PA-C's NPI number?
Cynthia Shackleton Martin, PA-C's National Provider Identifier (NPI) is 1821198839, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia Shackleton Martin, PA-C located?
The NPPES record lists a practice address at 835 S Van Buren St, Green Bay, WI, 54301. Phone: (920) 433-8384. Providers update this record themselves, so call before visiting.
How can I verify Cynthia Shackleton Martin, PA-C's license?
NPPES lists Wisconsin license number 1359-023, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Cynthia Shackleton Martin, PA-C prescribe under Medicare Part D?
In 2024, Cynthia Shackleton Martin, PA-C had 335 Medicare Part D claims for 238 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is Cynthia Shackleton Martin, PA-C's MIPS final score?
The 2023 MIPS final score is 94.6 of 100. 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.