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

Dr. John Spencer Mays, MD

Individual provider Internal Medicine Physician · NPI 1083108062

Dr. John Spencer Mays, MD is an Internal Medicine in Saint Louis, Missouri. Graduated from University of Tennessee, Hsc, College of Medicine in 2018, 8 years ago. Practices with Physician Groups Lc, a 524-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
8
Trained at
University of Tennessee, Hsc, College of Medicine
Licensed in
MO
In the registry since
2018
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

969 N Mason Rd Ste 110
Saint Louis, MO 63141-6338
Phone: (314) 996-3434
Show map & directions

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

Additional practice locations (1)

  • 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110-1003 — (314) 362-5000

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 2020001817 (MO)

Record details

NPI number1083108062
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 21, 2018
Last updated in NPPESMarch 22, 2023
Certification dateMarch 22, 2023

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF TENNESSEE, HSC, COLLEGE OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice Physician Groups Lc — 524 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations6 on file with Medicare

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