Gregory S. Defor, MD
Family Medicine Physician · Inver Grove Heights, MN
Gregory S. Defor, MD is a family medicine physician with a practice address in Inver Grove Heights, Minnesota, and NPI 1265496954, issued on Apr 12, 2006. Check the license (Minnesota 38410, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Gregory S. Defor
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 38410 MN
Self-reported in NPPES; status is on the state search - Practice location
- 5625 Cenex Dr, Inver Grove Heights, MN 55077
- Phone
- (651) 552-2600
- Enumerated
- Apr 12, 2006
- Record last updated
- Jul 21, 2022
- Fax
- (651) 552-2614
- Medicaid ID
- 067718300 MN
- Medicare enrollment
- Enrolled (PECOS I20100415000060); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,985 in Minnesota → Look up another NPI →
Also registered at 5625 Cenex Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shehla Alavi, MDPsychiatry Physician1508838533
- Kristina Baker, PAPhysician Assistant1396245668
- Margaret Breslin, MA LPPsychologist1558333666
- Donna Cole, LICSWSocial Worker1669627006
- Jillian Damron, MA, LPCCProfessional Counselor1245667633
- Allison DoranPhysician Assistant1447792957
Verify Gregory S. Defor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 38410Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average family medicine physician in 2024
2,181 Medicare Part D claims for 248 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 95 claims were for opioids.
Most prescribed
- Atorvastatin Calcium110 claims
- Metoprolol Succinate107 claims
- Lisinopril85 claims
- Amlodipine Besylate70 claims
- Losartan Potassium68 claims
- Levothyroxine Sodium66 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
- Pine Medical CenterHinckley, MN
- The Duluth Clinic LtdCloquet, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory S. Defor among 3,985 family medicine physician records in Minnesota
Gregory S. Defor, MD is one of 3,985 family medicine physician records with a practice address in Minnesota. 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 12% of them.
- NPI issued2006 · 12% of these records are older, 42% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1994 · median 2006 among the 2,483 with a school on file
- Record last updated2022 · 63% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 family medicine physician records list a practice address in Inver Grove Heights
They are 23 of the 325 NPPES records with a practice address in Inver Grove Heights, and 3,985 family medicine physician records in Minnesota.
All 3,985 in Minnesota → Every provider in Inver Grove Heights → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sean Gallagher, MDInver Grove Heights, MN 550771467016808
- Vanessa Gil, M.D.Inver Grove Heights, MN 550771073955043
- David Goebel, MDInver Grove Heights, MN 550771750878443
- Andrea Larson, DOInver Grove Heights, MN 550771366822587
- Karen Lucas, MDInver Grove Heights, MN 550771942273503
- Kristina ParthumInver Grove Heights, MN 550771891316881
- Elizabeth Price, M.D.Inver Grove Heights, MN 550771922485598
- Bonnie Rohr, MDInver Grove Heights, MN 550771124136924
Common questions
What is Gregory S. Defor, MD's NPI number?
Gregory S. Defor, MD's National Provider Identifier (NPI) is 1265496954, issued on Apr 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory S. Defor, MD located?
The NPPES record lists a practice address at 5625 Cenex Dr, Inver Grove Heights, MN, 55077. Phone: (651) 552-2600. Providers update this record themselves, so call before visiting.
How can I verify Gregory S. Defor, MD's license?
NPPES lists Minnesota license number 38410, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory S. Defor, MD prescribe under Medicare Part D?
In 2024, Gregory S. Defor, MD had 2,181 Medicare Part D claims for 248 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.