Robert Alexis Brennan, M.D.
Obstetrics & Gynecology Physician · Saint Louis, MO
Robert Alexis Brennan, M.D. is an obstetrics & gynecology physician with a practice address in Saint Louis, Missouri, and NPI 1326087024, issued on Jun 6, 2006. Check the license (Missouri MDR7047, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Robert Alexis Brennan
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- MDR7047 MO
336-068943 IL
Self-reported in NPPES; status is on the state search - Practice location
- 13023 Tesson Ferry RD, Saint Louis, MO 63128
- Phone
- (314) 849-3711
- Enumerated
- Jun 6, 2006
- Record last updated
- Oct 26, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (314) 849-0235
- Medicaid ID
- 201585304 MO
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 902 in Missouri → Look up another NPI →
Also registered at 13023 Tesson Ferry RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Monica Frank, PH.D.Clinical Psychologist1386694727
Verify Robert Alexis Brennan 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 MDR7047Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
33 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Robert Alexis Brennan among 902 obstetrics & gynecology physician records in Missouri
Robert Alexis Brennan, M.D. is one of 902 obstetrics & gynecology physician records with a practice address in Missouri. 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 11% of them.
- NPI issued2006 · 11% of these records are older, 54% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2011 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
332 obstetrics & gynecology physician records list a practice address in Saint Louis
They are 332 of the 27,605 NPPES records with a practice address in Saint Louis, and 902 obstetrics & gynecology physician records in Missouri.
All 902 in Missouri → Every provider in Saint Louis → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Richard Brennan, M.D.Saint Louis, MO 631281316986540
- James Brennan, M.D.Saint Louis, MO 631281699714360
- Pamela Campbell, DOSaint Louis, MO 631281447259304
- Kaci Durbin, M.D.Saint Louis, MO 631281053583708
- Salina Green, M.D.Saint Louis, MO 631281508985953
- Jamie Joyce, M.D.Saint Louis, MO 631281184825358
- Ivonne Negron, MDSt Louis, MO 631281740341759
- Amadu Ortillo, MDSt Louis, MO 631281265593271
Common questions
What is Robert Alexis Brennan, M.D.'s NPI number?
Robert Alexis Brennan, M.D.'s National Provider Identifier (NPI) is 1326087024, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Alexis Brennan, M.D. located?
The NPPES record lists a practice address at 13023 Tesson Ferry RD, Saint Louis, MO, 63128. Phone: (314) 849-3711. Providers update this record themselves, so call before visiting.
How can I verify Robert Alexis Brennan, M.D.'s license?
NPPES lists Missouri license number MDR7047, 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 Robert Alexis Brennan, M.D. prescribe under Medicare Part D?
In 2024, Robert Alexis Brennan, M.D. had 33 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.