Amy B. Jentz, M.D.
Surgery Physician · Ionia, MI
Amy B. Jentz, M.D. is a surgery physician with a practice address in Ionia, Michigan, and NPI 1831204601, issued on Aug 20, 2006. Check the license (Michigan AJ076427, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Amy B. Jentz
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- AJ076427 MI
Self-reported in NPPES; status is on the state search - Practice location
- 550 E Washington St, Ionia, MI 48846
- Phone
- (616) 523-1630
- Enumerated
- Aug 20, 2006
- Record last updated
- Apr 9, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (616) 523-1631
- Medicaid ID
- 104791262 MI
- Medicare enrollment
- Enrolled (PECOS I20051117000292); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2000
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 1,376 in Michigan → Look up another NPI →
Also registered at 550 E Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jonathon Baxter, PA-CPhysician Assistant1417423526
- Victoria Hufnagel, LMSWClinical Social Worker1063354363
- Connie Huhn, NPFamily Nurse Practitioner1780186254
- Ronald Hyde, D.O.Surgery Physician1215127162
- Aimee Johnson, FNP-CFamily Nurse Practitioner1710317763
- Jamie Manning, P.A.Physician Assistant1720414923
Verify Amy B. Jentz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license AJ076427Check 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 surgery physician in 2024
43 Medicare Part D claims for 33 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen20 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.
2 hospitals and group practices
- Sparrow Ionia HospitalIonia, MI · Critical Access Hospitals2 of 5 stars
- Sparrow Carson HospitalCarson City, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Amy B. Jentz among 1,376 surgery physician records in Michigan
Amy B. Jentz, M.D. is one of 1,376 surgery physician 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 62% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2000 · median 2006 among the 721 with a school on file
- Record last updated2010 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Michigan
There are 1,376 surgery physician records in Michigan.
All 1,376 in Michigan → Every provider in Ionia → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Ronald Hyde, D.O.Ionia, MI 488461215127162
- Jusith Amparo, DOGreenville, MI 488381790869329
- Khanghy Nguyen, DOMason, MI 488541043316680
- Kevin Oconnor, DOGreenville, MI 488381659335396
- Thomas Tavarone, MD, FACSGreenville, MI 488381245214741
- David Yanoschik, M.D.Greenville, MI 488381154716777
- Thomas Ziolkowski, D.O.Greenville, MI 488381295975068
- Amitava Ghosh, M.D.Mt Pleasant, MI 488581881694586
Common questions
What is Amy B. Jentz, M.D.'s NPI number?
Amy B. Jentz, M.D.'s National Provider Identifier (NPI) is 1831204601, issued on Aug 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Amy B. Jentz, M.D. located?
The NPPES record lists a practice address at 550 E Washington St, Ionia, MI, 48846. Phone: (616) 523-1630. Providers update this record themselves, so call before visiting.
How can I verify Amy B. Jentz, M.D.'s license?
NPPES lists Michigan license number AJ076427, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Amy B. Jentz, M.D. prescribe under Medicare Part D?
In 2024, Amy B. Jentz, M.D. had 43 Medicare Part D claims for 33 beneficiaries; the average among surgery physician prescribers was 147. 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.