James Clayton, M.D.
NPI 1427014984 · Pediatrics Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Clayton, M.D. is a Pediatrics Physician provider in Fairfax, VA (NPI 1427014984).
Provider details
- NPI number
- 1427014984
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D0060604 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
6 documented practice locations
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
Additional practice locations (5)
- 22505 Landmark Ct Ste 225Ashburn, VA 20148-6500Phone: (703) 876-2788Fax: (571) 665-6961
- 3600 Joseph Siewick DrFairfax, VA 22033-1709Phone: (703) 391-3600Fax: (703) 391-3079
- 2730 a Prosperity AvenueFairfax, VA 22031-2238Phone: (703) 289-1410Fax: (703) 289-1420
- 3300 Gallows RdFalls Church, VA 22042-3307Phone: (703) 776-4001Fax: (703) 776-7113
- 44055 Riverside Pkwy Ste 208Leesburg, VA 20176-5176Phone: (703) 858-6192Fax: (703) 858-6141
Registry dates
- Enumerated
- 2006-04-25
- Last updated
- 2021-12-29
- Certified
- 2021-12-29
Frequently asked questions
- What is James Clayton's NPI number?
- James Clayton's National Provider Identifier (NPI) is 1427014984, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Clayton's specialty?
- James Clayton is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is James Clayton located?
- James Clayton's practice location on file with NPPES is 3023 Hamaker Ct Ste 300, Fairfax, VA 22031-2240.
- What is James Clayton's phone number?
- The practice phone number listed in the NPPES registry for James Clayton is (703) 876-2788.
- Does James Clayton accept Medicare?
- James Clayton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Clayton's NPI active?
- Yes — James Clayton's NPI (1427014984) is active in the NPPES registry as of the last update on 2021-12-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.