Lee Michael Demertzis, MD
Critical Care Medicine (Internal Medicine) Physician · Saint Louis, MO
Lee Michael Demertzis, MD is a critical care medicine (internal medicine) physician with a practice address in Saint Louis, Missouri, and NPI 1831298827, issued on Sep 22, 2006. Check the license (Missouri 2006001553, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Lee Michael Demertzis
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 2006001553 MO
Self-reported in NPPES; status is on the state search - Practice location
- 10010 Kennerly RD, Saint Louis, MO 63128
- Phone
- (314) 317-0600
- Enumerated
- Sep 22, 2006
- Record last updated
- Mar 10, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (314) 317-0606
- Medicaid ID
- 1831298827 MO
- Medicare enrollment
- Enrolled (PECOS I20070425000118); accepts Medicare assignment
- Medical or professional school
- Emory University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 178 in Missouri → Look up another NPI →
Also registered at 10010 Kennerly RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Soha Afzal, DOInternal Medicine Physician1023696507
- Muhaddis Ahmad, M.D.Hospitalist Physician1417576984
- Haley Anderson, PHARMDPharmacist1548889389
- Rebecca Appelgren, MDAnesthesiology Physician1306825955
Verify Lee Michael Demertzis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2006001553Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Mercy Clinic Adult Critical Care, LLCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lee Michael Demertzis among 178 critical care medicine (internal medicine) physician records in Missouri
Lee Michael Demertzis, MD is one of 178 critical care medicine (internal medicine) physician records with a practice address in Missouri. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 63% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2004 · median 2005 among the 144 with a school on file
- Record last updated2015 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Missouri
There are 178 critical care medicine (internal medicine) physician records in Missouri.
All 178 in Missouri → Every provider in Saint Louis → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Dinko Naydenov, MDSaint Louis, MO 631281427186279
- Nikhil Organti, MDSaint Louis, MO 631281891925558
- Sheila Lemley, MDSaint Louis, MO 631311699788232
- David Striker, MDSaint Louis, MO 631311831102193
- Walter Mickey, D.O.Saint Louis, MO 631221306109384
- Rajesh Swaminathan, M.D.Kirkwood, MO 631221720051527
- Samuel Chandra, MDSaint Louis, MO 631361124010772
- James Close, MDSaint Louis, MO 631361083641971
Common questions
What is Lee Michael Demertzis, MD's NPI number?
Lee Michael Demertzis, MD's National Provider Identifier (NPI) is 1831298827, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lee Michael Demertzis, MD located?
The NPPES record lists a practice address at 10010 Kennerly RD, Saint Louis, MO, 63128. Phone: (314) 317-0600. Providers update this record themselves, so call before visiting.
How can I verify Lee Michael Demertzis, MD's license?
NPPES lists Missouri license number 2006001553, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.