HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / VA

MARK M THEISS, MD

SPORTS MEDICINE

Medical school: GEORGETOWN UNIVERSITY SCHOOL OF MEDICINE

Graduated: 1975

Also: ORTHOPEDIC SURGERY

NPI: 1669534350

Practice Locations (5)

INOVA HEALTH CARE SERVICES

4320 SEMINARY RD

ALEXANDRIA, VA 223041535

INOVA HEALTH CARE SERVICES

6355 WALKER LN

ALEXANDRIA, VA 223103251

INOVA HEALTH CARE SERVICES

3299 WOODBURN RD

ANNANDALE, VA 220037326

7032052626

INOVA HEALTH CARE SERVICES

3299 WOODBURN RD, SUITE 370

ANNANDALE, VA 220037326

7032052626

INOVA HEALTH CARE SERVICES

8501 ARLINGTON BLVD

FAIRFAX, VA 220314625

Source: CMS National Downloadable File, September 2026.