Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Jay Mahadevan Inc

Organization Internal Medicine Physician · NPI 1386747715

Jay Mahadevan Inc is an Internal Medicine Physician in St. Louis, Missouri. Registered with an NPI since 2006.

In the registry since
2006
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

3535 S Jefferson Ave Ste 304
St. Louis, MO 63118
Phone: (314) 865-6585
Fax: (314) 865-6599
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X

Record details

NPI number1386747715
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Jay Mahadevan — President · (314) 865-6582
NPI enumeratedSeptember 7, 2006
Last updated in NPPESAugust 5, 2010
Mailing addressPo Box 775578, St Louis, MO 63177-5578

Other providers in St. Louis