Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. James Ernest Clayton, M.D.
Pediatrics Physician in Fairfax, VA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427014984
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Registry record
Entity type Individual (Type 1)
Name Dr. James Ernest Clayton
Credential M.D.
Sex Male
Practice address 3023 Hamaker Ct Ste 300, Fairfax, VA, 22031
Phone (703) 876-2788
Fax (571) 405-5916
Enumeration date Apr 25, 2006
Last updated in NPPES Dec 29, 2021
Taxonomy & licenses
2080P0214X Pediatric Pulmonology Physician Allopathic & Osteopathic Physicians · License D0060604 (MD) Secondary
2080P0214X Pediatric Pulmonology Physician Allopathic & Osteopathic Physicians · License MD32937 (DC) Secondary
2080P0214X Pediatric Pulmonology Physician Allopathic & Osteopathic Physicians · License 0101039382 (VA) Secondary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 0101039382 (VA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 6720544 | Medicaid | VA | - |
| 6720561 | Medicaid | VA | - |
| 6710999 | Medicaid | VA | - |
| 6707084 | Medicaid | VA | - |
| 6700250 | Medicaid | VA | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for James Clayton?
The National Provider Identifier (NPI) for James Clayton is 1427014984, a Type 1 (individual) record in the CMS NPPES registry.
Where does James Clayton practice?
The practice location on file with NPPES is in Fairfax, VA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Leon Moores Neurological Surgery Physician · Fairfax, VA NPI 1245324185 William Mcclintock Psychiatry Physician · Fairfax, VA NPI 1518044858 Darlene Mansoor Allergy & Immunology Physician · Fairfax, VA NPI 1013131010 Shalinee Khurana Developmental - Behavioral Pediatrics Physician · Fairfax, VA NPI 1104010289 Emily Nichols Clinical Child & Adolescent Psychologist · Fairfax, VA NPI 1275877607 Supriya Jain Pediatric Allergy/Immunology Physician · Fairfax, VA NPI 1528300910 Shripriya O'Neill Pediatric Nurse Practitioner · Fairfax, VA NPI 1265990212 Lucy Drayson Genetic Counselor (M.S.) · Fairfax, VA NPI 1528677127
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-29.