Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Elwyn C Clark, DO

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1083875900

Elwyn C Clark, DO is registered under Critical Care (Intensivists) in Chattanooga, Tennessee. Qualified in 2004, 22 years ago. Practices with Erlanger Health, a 503-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
22
Licensed in
NY
In the registry since
2008
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

979 E 3rd St Ste C735
Chattanooga, TN 37403-3310
Phone: (423) 778-9101
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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 247501-1 (NY)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 247501 (NY)

Record details

NPI number1083875900
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 23, 2008
Last updated in NPPESJuly 6, 2026
Certification dateJuly 6, 2026

Medicare enrollment

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

Medicare specialtyCRITICAL CARE (INTENSIVISTS)
Also practisesEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Erlanger Health — 503 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients123
Services billed 364 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Erlanger Health

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 503 clinicians in the practice; 12 are shown here.

Other providers in Chattanooga