Family Physicians of Old Town Fairfax PC.
NPI 1366570400 · Family Medicine Physician · Fairfax, VA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Family Physicians of Old Town Fairfax PC. is a Family Medicine Physician organization in Fairfax, VA (NPI 1366570400).
Provider details
- NPI number
- 1366570400
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- David Leonard, Medical Director(703) 352-7100
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
Mailing address
Other names (DBA / former)
- Doing business as
- David D. Leonard, M.D. PC
- Doing business as
- David D. Leonard, M.D. PC
Registry dates
- Enumerated
- 2007-03-01
- Last updated
- 2023-03-08
- Certified
- 2023-03-08
Frequently asked questions
- What is Family Physicians of Old Town Fairfax PC.'s NPI number?
- Family Physicians of Old Town Fairfax PC.'s National Provider Identifier (NPI) is 1366570400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Family Physicians of Old Town Fairfax PC.?
- Family Physicians of Old Town Fairfax PC. is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Family Physicians of Old Town Fairfax PC. located?
- Family Physicians of Old Town Fairfax PC.'s practice location on file with NPPES is 3911 Blenheim Blvd Ste 41c, Fairfax, VA 22030-2434.
- What is Family Physicians of Old Town Fairfax PC.'s phone number?
- The practice phone number listed in the NPPES registry for Family Physicians of Old Town Fairfax PC. is (703) 352-7100.
- Does Family Physicians of Old Town Fairfax PC. accept Medicare?
- Family Physicians of Old Town Fairfax PC. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Family Physicians of Old Town Fairfax PC.?
- The authorized official listed on Family Physicians of Old Town Fairfax PC.'s NPPES record is David Leonard, Medical Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Family Physicians of Old Town Fairfax PC.'s NPI active?
- Yes — Family Physicians of Old Town Fairfax PC.'s NPI (1366570400) is active in the NPPES registry as of the last update on 2023-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.