Gregory P. Genova, M.D.
Internal Medicine Physician · O Fallon, MO
Gregory P. Genova, M.D. is an internal medicine physician with a practice address in O Fallon, Missouri, and NPI 1750377941, issued on Sep 22, 2005. Check the license (Missouri MDR3C40, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Gregory P. Genova
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MDR3C40 MO
Self-reported in NPPES; status is on the state search - Practice location
- 5551 Winghaven Blvd Ste 250, O Fallon, MO 63368
- Phone
- (636) 685-7724
- Enumerated
- Sep 22, 2005
- Record last updated
- Aug 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (314) 590-5914
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Verify Gregory P. Genova in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license MDR3C40Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average internal medicine physician in 2024
967 Medicare Part D claims for 210 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 39 claims were for opioids.
Most prescribed
- Amlodipine Besylate63 claims
- Atorvastatin Calcium62 claims
- Albuterol Sulfate Hfa37 claims
- Gabapentin37 claims
- Lisinopril35 claims
- Hydrochlorothiazide26 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.
Gregory P. Genova among 2,604 internal medicine physician records in Missouri
Gregory P. Genova, M.D. is one of 2,604 internal medicine physician records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2020 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 internal medicine physician records list a practice address in O Fallon
They are 17 of the 1,225 NPPES records with a practice address in O Fallon, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in O Fallon → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Daniela Blum Morales, MDO Fallon, MO 633681730561069
- Naman Ghazal-Albar, MDO Fallon, MO 633681639144785
- Gary Gray, MDO Fallon, MO 633681497729826
- Brian Grus, MDO Fallon, MO 633681053421065
- Geraldine Ryan, M.D.O Fallon, MO 633681689640609
- Rajiv Sadana, MDO Fallon, MO 633681669423034
- Aaron Steimel, DOO Fallon, MO 633681659067874
- Alan Steube, DOO Fallon, MO 633681740857457
Common questions
What is Gregory P. Genova, M.D.'s NPI number?
Gregory P. Genova, M.D.'s National Provider Identifier (NPI) is 1750377941, issued on Sep 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory P. Genova, M.D. located?
The NPPES record lists a practice address at 5551 Winghaven Blvd Ste 250, O Fallon, MO, 63368. Phone: (636) 685-7724. Providers update this record themselves, so call before visiting.
How can I verify Gregory P. Genova, M.D.'s license?
NPPES lists Missouri license number MDR3C40, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory P. Genova, M.D. prescribe under Medicare Part D?
In 2024, Gregory P. Genova, M.D. had 967 Medicare Part D claims for 210 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.