Thomas J. Greco, M.D.
Internal Medicine Physician · Saint Louis, MO
Thomas J. Greco, M.D. is an internal medicine physician with a practice address in Saint Louis, Missouri, and NPI 1417920927, issued on Feb 7, 2006. Check the license (Missouri R6B71, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Thomas J. Greco
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- R6B71 MO
Self-reported in NPPES; status is on the state search - Practice location
- 3009 N Ballas RD, Saint Louis, MO 63131
- Phone
- (314) 432-5555
- Enumerated
- Feb 7, 2006
- Record last updated
- Jan 6, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (314) 432-1415
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 3009 N Ballas RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Asim Ali, MDInternal Medicine Physician1821047218
- Christina Allen, AU.D.Audiologist1922382464
- Lizette Alvarez, M.D.Physical Medicine & Rehabilitation Physician1750342580
- John Anstey, M.D.Obstetrics & Gynecology Physician1669470878
- Proceso Arenos, MDSurgery Physician1245259498
- Jayne Aschen, PA-CPhysician Assistant1215236740
Verify Thomas J. Greco 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 R6B71Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
47 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium14 claims
- Lisinopril12 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.
Thomas J. Greco among 2,604 internal medicine physician records in Missouri
Thomas J. Greco, 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2010 · 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).
941 internal medicine physician records list a practice address in Saint Louis
They are 941 of the 27,605 NPPES records with a practice address in Saint Louis, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in Saint Louis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Asim Ali, MDSaint Louis, MO 631311821047218
- Paul Altsheler, MDSaint Louis, MO 631311346225372
- Richard Bligh, MDSaint Louis, MO 631311306813050
- J Corder, MDSaint Louis, MO 631311184698987
- Zahirul Haque, MDSaint Louis, MO 631311578536546
- Joseph Hilgeman, MDDes Peres, MO 631311407820145
- Andrea Holthaus, MDSaint Louis, MO 631311528031473
- Mai Hunt, M.D.Saint Louis, MO 631311861464158
Common questions
What is Thomas J. Greco, M.D.'s NPI number?
Thomas J. Greco, M.D.'s National Provider Identifier (NPI) is 1417920927, issued on Feb 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas J. Greco, M.D. located?
The NPPES record lists a practice address at 3009 N Ballas RD, Saint Louis, MO, 63131. Phone: (314) 432-5555. Providers update this record themselves, so call before visiting.
How can I verify Thomas J. Greco, M.D.'s license?
NPPES lists Missouri license number R6B71, 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 Thomas J. Greco, M.D. prescribe under Medicare Part D?
In 2024, Thomas J. Greco, M.D. had 47 Medicare Part D claims; 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.