John Gerald Hagan, DO
Family Medicine Physician · Southfield, MI
John Gerald Hagan, DO is a family medicine physician with a practice address in Southfield, Michigan, and NPI 1548790165, issued on Jun 15, 2017. Check the license (Michigan 5101025515, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- John Gerald Hagan
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 5101025515 MI
Self-reported in NPPES; status is on the state search - Practice location
- 16001 W. Nine Mile Road, Southfield, MI 48075
- Phone
- (248) 849-3000
- Enumerated
- Jun 15, 2017
- Record last updated
- Jul 21, 2022
- Fax
- (248) 849-5324
- Medicare enrollment
- Enrolled (PECOS I20200608001398); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 16001 W. Nine Mile Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nadine Dawood, PA-CPhysician Assistant1295265890
Verify John Gerald Hagan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101025515Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% more Medicare Part D claims than the average family medicine physician in 2024
5,866 Medicare Part D claims for 424 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 110 claims were for opioids.
Most prescribed
- Atorvastatin Calcium578 claims
- Lisinopril325 claims
- Amlodipine Besylate237 claims
- Levothyroxine Sodium210 claims
- Metformin Hcl164 claims
- Losartan Potassium155 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 2 group practices
- Mymichigan Medical GroupMidland, MI
- Powerback Rehabilitation LLCMidland, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
105 family medicine physician records list a practice address in Southfield
They are 105 of the 5,689 NPPES records with a practice address in Southfield, and 6,013 family medicine physician records in Michigan.
All 105 in Southfield → All 6,013 in Michigan → Every provider in Southfield →
Other family medicine physician records in Michigan
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- Saadia Abbas, MDChesterfield, MI1619136868
- Faezeh AbbasiMonroe, MI1144065921
- Layla Abbasi, MDWayne, MI1346177607
- Marisa Abbo, DORochester Hills, MI1184605388
- Cathleen Abbott, M.D.East Lansing, MI1275630501
- Leah Abbott, MDGwinn, MI1760987341
- Nina Abboud, DORochester Hills, MI1639750557
- Ryan Abboud, DOBingham Farms, MI1104353077
- Christina Abd, MDSterling Heights, MI1770371965
Common questions
What is John Gerald Hagan, DO's NPI number?
John Gerald Hagan, DO's National Provider Identifier (NPI) is 1548790165, issued on Jun 15, 2017. An NPI identifies a provider in billing; it is not a license.
Where is John Gerald Hagan, DO located?
The NPPES record lists a practice address at 16001 W. Nine Mile Road, Southfield, MI, 48075. Phone: (248) 849-3000. Providers update this record themselves, so call before visiting.
How can I verify John Gerald Hagan, DO's license?
NPPES lists Michigan license number 5101025515, 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 John Gerald Hagan, DO prescribe under Medicare Part D?
In 2024, John Gerald Hagan, DO had 5,866 Medicare Part D claims for 424 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.