Greg Michael Singer, D.O.
Family Medicine Physician · Iowa City, IA
Greg Michael Singer, D.O. is a family medicine physician with a practice address in Iowa City, Iowa, and NPI 1750318499, issued on Jun 27, 2006. Check the license (Iowa 3291, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Greg Michael Singer
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 3291 IA
Self-reported in NPPES; status is on the state search - Practice location
- 269 N 1St Ave, Iowa City, IA 52245
- Phone
- (319) 688-7777
- Enumerated
- Jun 27, 2006
- Record last updated
- Aug 19, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (319) 688-7776
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Greg Michael Singer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 3291Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family medicine physician in 2024
110 Medicare Part D claims for 13 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium13 claims
- Losartan Potassium11 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): 89.1 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).
Greg Michael Singer among 2,336 family medicine physician records in Iowa
Greg Michael Singer, D.O. is one of 2,336 family medicine physician records with a practice address in Iowa. 75% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 48% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2013 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
156 family medicine physician records list a practice address in Iowa City
They are 156 of the 7,163 NPPES records with a practice address in Iowa City, and 2,336 family medicine physician records in Iowa.
All 2,336 in Iowa → Every provider in Iowa City → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
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- Sarah Jorgensen, DOIowa City, IA 522451073593703
- James Keck, MDIowa City, IA 522451356313696
- Matthew Lanternier, MDIowa City, IA 522451437148285
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Common questions
What is Greg Michael Singer, D.O.'s NPI number?
Greg Michael Singer, D.O.'s National Provider Identifier (NPI) is 1750318499, issued on Jun 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Greg Michael Singer, D.O. located?
The NPPES record lists a practice address at 269 N 1St Ave, Iowa City, IA, 52245. Phone: (319) 688-7777. Providers update this record themselves, so call before visiting.
How can I verify Greg Michael Singer, D.O.'s license?
NPPES lists Iowa license number 3291, 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 Greg Michael Singer, D.O. prescribe under Medicare Part D?
In 2024, Greg Michael Singer, D.O. had 110 Medicare Part D claims for 13 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Greg Michael Singer, D.O.'s MIPS final score?
The 2023 MIPS final score is 89.1 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.