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

John S. Farrell, MD, PC

Organization Gastroenterology Physician · NPI 1770739419

John S. Farrell, MD, PC is a Gastroenterology Physician in Saint Louis, Missouri. Licensed in Missouri. Registered with an NPI since 2008.

Licensed in
MO
In the registry since
2008
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

621 S New Ballas Rd Ste 584A
Saint Louis, MO 63141-8232
Phone: (314) 251-6966
Fax: (314) 251-6632
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence R5636 (MO)

Record details

NPI number1770739419
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official John Farrell — President · (314) 251-6966
NPI enumeratedAugust 13, 2008
Last updated in NPPESMay 27, 2009
Mailing address621 S New Ballas Rd, Suite 584a, Saint Louis, MO 63141-8232

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