Zachary Benjamin Retzler, PA
Medical Physician Assistant · Saginaw, MI
Zachary Benjamin Retzler, PA is a medical physician assistant with a practice address in Saginaw, Michigan, and NPI 1972886703, issued on Sep 28, 2011. Check the license (Michigan 5601006179, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Zachary Benjamin Retzler
- Credential
- PA
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 5601006179 MI
Self-reported in NPPES; status is on the state search - Practice location
- 912 S Washington Ave, Saginaw, MI 48601
- Phone
- (989) 790-1001
- Enumerated
- Sep 28, 2011
- Record last updated
- Apr 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (989) 790-1002
- Medicare enrollment
- Enrolled (PECOS I20111110000782); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 1,140 in Michigan → Look up another NPI →
Also registered at 912 S Washington Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Blebea, MDVascular Surgery Physician1386632313
- Marcus Breidinger, PAMedical Physician Assistant1033462635
- Renee Cholyway, M.D.Colon & Rectal Surgery Physician1639604614
- Kareem Ibraheem, MBBCHSurgical Critical Care Physician1861996241
- Ayesha Khan, M.D.Internal Medicine Physician1275583882
- Laurie Meyer, NPNurse Practitioner1881826071
Verify Zachary Benjamin Retzler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 5601006179Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average medical physician assistant in 2024
115 Medicare Part D claims for 65 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 42 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen26 claims
- Amoxicillin-Clavulanate Potass15 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): 85.8 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
- Saginaw Cooperative Hospitals IncSaginaw, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Benjamin Retzler among 1,140 medical physician assistant records in Michigan
Zachary Benjamin Retzler, PA is one of 1,140 medical physician assistant records with a practice address in Michigan. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 53% of them.
- NPI issued2011 · 53% of these records are older, 44% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2011 · median 2012 among the 613 with a school on file
- Record last updated2021 · 59% 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 Michigan 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 Michigan
There are 1,140 medical physician assistant records in Michigan.
All 1,140 in Michigan → Every provider in Saginaw → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Marcus Breidinger, PASaginaw, MI 486011033462635
- Thomas Jessup, PA-CSaginaw, MI 486011366578346
- Carrie Reif-Busman, PASaginaw, MI 486011376691600
- Sonya Cribbs, PASaginaw, MI 486021639264849
- Stephanie Lagrow, PASaginaw, MI 486021851522361
- Allen Lindsey, PA-C, MPASSaginaw, MI 486021407968548
- Christopher Pfeiffer, PA CSaginaw, MI 486021174575302
- Holly Shesky, PACSaginaw, MI 486021255327466
Common questions
What is Zachary Benjamin Retzler, PA's NPI number?
Zachary Benjamin Retzler, PA's National Provider Identifier (NPI) is 1972886703, issued on Sep 28, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Benjamin Retzler, PA located?
The NPPES record lists a practice address at 912 S Washington Ave, Saginaw, MI, 48601. Phone: (989) 790-1001. Providers update this record themselves, so call before visiting.
How can I verify Zachary Benjamin Retzler, PA's license?
NPPES lists Michigan license number 5601006179, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Zachary Benjamin Retzler, PA prescribe under Medicare Part D?
In 2024, Zachary Benjamin Retzler, PA had 115 Medicare Part D claims for 65 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is Zachary Benjamin Retzler, PA's MIPS final score?
The 2023 MIPS final score is 85.8 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.