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

Dr. Lee Michael Demertzis, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1831298827

Dr. Lee Michael Demertzis, MD is a Critical Care (Intensivists) in Saint Louis, Missouri. Graduated from Emory University School of Medicine in 2004, 22 years ago. Practices with Mercy Clinic Adult Critical Care LLC, a 59-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
22
Trained at
Emory University School of Medicine
Licensed in
MO
In the registry since
2006
Specialties on file
2
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

10010 Kennerly Rd
Saint Louis, MO 63128-2106
Phone: (314) 317-0600
Fax: (314) 317-0606
Show map & directions

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

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence 2006001553 (MO)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 2006001553 (MO)

Record details

NPI number1831298827
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 22, 2006
Last updated in NPPESMarch 10, 2015

Medicare enrollment

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

Medicare specialtyCRITICAL CARE (INTENSIVISTS)
Also practisesINTERNAL MEDICINE, PULMONARY DISEASE
Medical schoolEMORY UNIVERSITY SCHOOL OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Mercy Clinic Adult Critical Care Llc — 59 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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