John Gregory Amspaugh, MD
Family Medicine Physician · Johnston, IA
John Gregory Amspaugh, MD is a family medicine physician with a practice address in Johnston, Iowa, and NPI 1588647820, issued on Nov 21, 2005. Check the license (Iowa MD-39558, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- John Gregory Amspaugh
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD-39558 IA
Self-reported in NPPES; status is on the state search - Practice location
- 5501 NW 86TH St, Johnston, IA 50131
- Phone
- (515) 875-9035
- Enumerated
- Nov 21, 2005
- Record last updated
- Dec 11, 2023
- Fax
- (515) 875-9036
- Medicare enrollment
- Enrolled (PECOS I20110628000628); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 5501 NW 86TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Jauron, MDFamily Medicine Physician1619936382
- Robert Lee, MDFamily Medicine Physician1417958489
- Jay Petersma, O.D.Optometrist1326148933
- Abbie Ruisch, DOFamily Medicine Physician1003817073
Verify John Gregory Amspaugh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license MD-39558Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% more Medicare Part D claims than the average family medicine physician in 2024
6,106 Medicare Part D claims for 446 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 157 claims were for opioids.
Most prescribed
- Atorvastatin Calcium477 claims
- Levothyroxine Sodium290 claims
- Rosuvastatin Calcium246 claims
- Lisinopril180 claims
- Amlodipine Besylate175 claims
- Ozempic132 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.
Bills Medicare through one group practice
- The Iowa Clinic PCJohnston, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
19 family medicine physician records list a practice address in Johnston
They are 19 of the 524 NPPES records with a practice address in Johnston, and 2,336 family medicine physician records in Iowa.
All 19 in Johnston → All 2,336 in Iowa → Every provider in Johnston →
Other family medicine physician records in Iowa
- Jennifer Aanestad, M.D.Durant, IA1386649341
- Amjad Abdelhady, MDSioux City, IA1033966700
- Afsana Abdullah, D.O.Bettendorf, IA1760583066
- Raja Ali Abdullah, MDCedar Falls, IA1356101000
- Laura Abels, DOAnkeny, IA1427313527
- Matthew AbendrothDes Moines, IA1972918894
- Mabra Abernathy, M.D.Coralville, IA1316922545
- Jennifer Abler, D.O.Altoona, IA1528159068
- Michael Abouassaly, M.D.West Burlington, IA1184790909
- Safa Abukhalil, M.B.B.SWest Des Moines, IA1982084463
Common questions
What is John Gregory Amspaugh, MD's NPI number?
John Gregory Amspaugh, MD's National Provider Identifier (NPI) is 1588647820, issued on Nov 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Gregory Amspaugh, MD located?
The NPPES record lists a practice address at 5501 NW 86TH St, Johnston, IA, 50131. Phone: (515) 875-9035. Providers update this record themselves, so call before visiting.
How can I verify John Gregory Amspaugh, MD's license?
NPPES lists Iowa license number MD-39558, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Gregory Amspaugh, MD prescribe under Medicare Part D?
In 2024, John Gregory Amspaugh, MD had 6,106 Medicare Part D claims for 446 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.