Vrinda Mahajan, M.D.
Internal Medicine Physician · St Louis, MO
Vrinda Mahajan, M.D. is an internal medicine physician with a practice address in St Louis, Missouri, and NPI 1790997724, issued on May 3, 2007. Check the license (Missouri 2006013738, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Vrinda Mahajan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2006013738 MO
Self-reported in NPPES; status is on the state search - Practice location
- 6420 Clayton RD, St Louis, MO 63117
- Phone
- (314) 768-8000
- Enumerated
- May 3, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160819001836); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 6420 Clayton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hussein AlaawadStudent in an Organized Health Care Education/Training Program1700579729
- Suyash Dawadi, MDStudent in an Organized Health Care Education/Training Program1306680848
- Habibu Luziga, M.D.Student in an Organized Health Care Education/Training Program1457195471
- Kelvin McDaniel, D.O.Ophthalmology Physician1538554258
- Joseph Pierchorowicz, M.D.Internal Medicine Physician1679763163
- Simisolaoluwa Popoola, MDStudent in an Organized Health Care Education/Training Program1447140074
Verify Vrinda Mahajan 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 2006013738Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,163 Medicare Part D claims for 195 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Amlodipine Besylate147 claims
- Losartan Potassium109 claims
- Furosemide98 claims
- Allopurinol67 claims
- Farxiga55 claims
- Lisinopril48 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.
Industry payments in 2024: $1,084.58
43 payments; by number, the most common kind was food and beverage; the largest payer was Mallinckrodt Hospital Products Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Montgomery Renal Associates P.A.Silver Spring, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vrinda Mahajan among 2,604 internal medicine physician records in Missouri
Vrinda Mahajan, 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 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 53% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2006 · median 2006 among the 1,443 with a school on file
- Record last updated2007 · 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).
58 internal medicine physician records list a practice address in St Louis
They are 58 of the 1,420 NPPES records with a practice address in St Louis, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in St Louis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Abbott, MDRichmond Heights, MO 631171568448850
- Monika Aplyn, M.D.Saint Louis, MO 631171336195247
- Kathleen Brunts, M.D.Saint Louis, MO 631171851382204
- Danita Cole, MDSaint Louis, MO 631171639152374
- Mohammad Emami, MDSaint Louis, MO 631171598712671
- Snehal Gandhi, M.D.Saint Louis, MO 631171184608689
- William Guyol, MDSaint Louis, MO 631171396738019
- Alka Kapoor, MDSaint Louis, MO 631171639122633
Common questions
What is Vrinda Mahajan, M.D.'s NPI number?
Vrinda Mahajan, M.D.'s National Provider Identifier (NPI) is 1790997724, issued on May 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Vrinda Mahajan, M.D. located?
The NPPES record lists a practice address at 6420 Clayton RD, St Louis, MO, 63117. Phone: (314) 768-8000. Providers update this record themselves, so call before visiting.
How can I verify Vrinda Mahajan, M.D.'s license?
NPPES lists Missouri license number 2006013738, 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 Vrinda Mahajan, M.D. prescribe under Medicare Part D?
In 2024, Vrinda Mahajan, M.D. had 1,163 Medicare Part D claims for 195 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.