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

Roger R Guillemette, MD

Individual provider Internal Medicine Physician · NPI 1417981333

Roger R Guillemette, MD is an Internal Medicine in Saint Louis, Missouri. Graduated from Geisel School of Medicine at Dartmouth in 1992, 34 years ago. Practices with Physician Groups Lc, a 524-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
34
Trained at
Geisel School of Medicine at Dartmouth
Licensed in
MO
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3009 N Ballas Rd Ste 387C
Saint Louis, MO 63131-2324
Phone: (314) 996-5900
Show map & directions

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

Additional practice locations (1)

  • 3009 N Ballas Rd, Saint Louis, MO 63131-2322 — (314) 996-5900

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 108658 (MO)

Record details

NPI number1417981333
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 10, 2006
Last updated in NPPESFebruary 19, 2021
Certification dateFebruary 19, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolGEISEL SCHOOL OF MEDICINE AT DARTMOUTH
Graduated 1992 (34 years in practice)
Group practice Physician Groups Lc — 524 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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