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

Oscar Adler, MD, PHD

Individual provider Nephrology Physician · NPI 1700874138

Oscar Adler, MD, PHD is a Nephrology in Leesburg, Virginia. Qualified in 1983, 43 years ago. Practices with Loudoun Medical Group, PC, a 274-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Virginia.

Years since qualifying
43
Licensed in
VA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

19490 Sandridge Way Ste 120
Leesburg, VA 20176-3469
Phone: (703) 723-5555
Fax: (703) 562-6996
Show map & directions

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

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 0101234619 (VA)

Record details

NPI number1700874138
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedOctober 10, 2005
Last updated in NPPESJune 2, 2026
Certification dateJune 2, 2026
Mailing address19490 Sandridge Way Ste 120, Lansdowne, VA 20176-3469

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Medical schoolOTHER
Graduated 1983 (43 years in practice)
Group practice Loudoun Medical Group, Pc — 274 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare