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

Carl A. Lyss, MD, LLC

Organization Internal Medicine Physician · NPI 1952530990

Carl A. Lyss, MD, LLC is an Internal Medicine Physician in Ladue, Missouri. Registered with an NPI since 2009.

In the registry since
2009
Specialties on file
2
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

8888 Ladue Rd
Ladue, MO 63124
Phone: (314) 725-3799
Fax: (314) 725-3899
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X
Gastroenterology Physician Taxonomy 207RG0100X

Record details

NPI number1952530990
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Carl Lyss — Owner · (314) 725-3799
NPI enumeratedJuly 13, 2009
Last updated in NPPESJuly 13, 2009
Mailing address8888 Ladue Rd., Ladue, MO 63124