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

Dr. Douglas Rennert, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1992796502

Dr. Douglas Rennert, MD is an Internal Medicine in Leesburg, Virginia. Graduated from Columbia University College of Physicians and Surgeons in 1984, 42 years ago. Practices with Pulmonary and Critical Care Associates, PC, a 5-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Virginia.

Years since qualifying
42
Trained at
Columbia University College of Physicians and Surgeons
Licensed in
VA
In the registry since
2005
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

19455 Deerfield Ave Ste 206
Leesburg, VA 20176-8100
Phone: (703) 858-9608
Fax: (702) 858-9618
Show map & directions

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

Additional practice locations (1)

  • 1860 Town Center Dr Ste 270, Reston, VA 20190-5899 — (703) 318-8157

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 0101043761 (VA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 0101043761 (VA)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence 0101043761 (VA)

Record details

NPI number1992796502
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 2, 2005
Last updated in NPPESJuly 10, 2023
Certification dateJuly 10, 2023
Mailing address19455 Deerfield Ave, Ste 206, Leesburg, VA 20176-8100

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesPULMONARY DISEASE, SLEEP MEDICINE
Medical schoolCOLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 1984 (42 years in practice)
Group practice Pulmonary And Critical Care Associates, P.C. — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Leesburg