Justin Cross, M.D.
NPI 1639465107 · Family Medicine Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Cross, M.D. is a Family Medicine Physician provider in Fairfax, VA (NPI 1639465107).
Provider details
- NPI number
- 1639465107
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0116023493 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
Registry dates
- Enumerated
- 2011-06-23
- Last updated
- 2011-06-23
Frequently asked questions
- What is Justin Cross's NPI number?
- Justin Cross's National Provider Identifier (NPI) is 1639465107, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Cross's specialty?
- Justin Cross is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Justin Cross located?
- Justin Cross's practice location on file with NPPES is 3650 Joseph Siewick Dr Ste 400, Fairfax, VA 22033-1715.
- What is Justin Cross's phone number?
- The practice phone number listed in the NPPES registry for Justin Cross is (703) 391-2020.
- Does Justin Cross accept Medicare?
- Justin Cross is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Cross's NPI active?
- Yes — Justin Cross's NPI (1639465107) is active in the NPPES registry as of the last update on 2011-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.