OrganizationActive
Loudoun Medical Group, PC
NPI 1780395939 · Rheumatology Physician · Dulles, VA
Loudoun Medical Group, PC is a Rheumatology Physician organization in Dulles, VA (NPI 1780395939).
Provider details
- NPI number
- 1780395939
- Entity type
- Organization
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Parent organization
- Loudoun Medical Group, PC
- Organization subpart
- Yes
- Authorized official
- Mary Tamasy, Ceo(703) 737-6010
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(59/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
24430 Stone Springs Blvd, Suite 570
Dulles, VA 20166-2267
Phone: (571) 427-7170
Fax: (571) 427-7172
Street-level locationGet directions
Mailing address
224 D Cornwall Street Nw
Leesburg, VA 20176
Other names (DBA / former)
- Doing business as
- Dulles Rheumatology
Registry dates
- Enumerated
- 2022-12-08
- Last updated
- 2022-12-08
- Certified
- 2022-12-06
Frequently asked questions
- What is Loudoun Medical Group, PC's NPI number?
- Loudoun Medical Group, PC's National Provider Identifier (NPI) is 1780395939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Loudoun Medical Group, PC?
- Loudoun Medical Group, PC is classified in the NPPES registry as Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Loudoun Medical Group, PC located?
- Loudoun Medical Group, PC's practice location on file with NPPES is 24430 Stone Springs Blvd, Suite 570, Dulles, VA 20166-2267.
- What is Loudoun Medical Group, PC's phone number?
- The practice phone number listed in the NPPES registry for Loudoun Medical Group, PC is (571) 427-7170.
- Who is the authorized official for Loudoun Medical Group, PC?
- The authorized official listed on Loudoun Medical Group, PC's NPPES record is Mary Tamasy, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Loudoun Medical Group, PC's NPI active?
- Yes — Loudoun Medical Group, PC's NPI (1780395939) is active in the NPPES registry as of the last update on 2022-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.