James Ernest Clayton, M.D.
Pediatrics · Fairfax, VA
At a glance
3023 Hamaker Ct Ste 300, Fairfax, VA 22031-2240
NPPES record updated Dec 29, 2021. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
3023 Hamaker Ct Ste 300Fairfax, VA 22031-2240
Additional reported practice locations
2730 A Prosperity AvenueFairfax, VA 220312238
Phone: 7032891410
Fax: 7032891420 3300 Gallows Rd
Falls Church, VA 220423307
Phone: 7037764001
Fax: 7037767113 44055 Riverside Pkwy Ste 208
Leesburg, VA 201765176
Phone: 7038586192
Fax: 7038586141 22505 Landmark Ct Ste 225
Ashburn, VA 201486500
Phone: 7038762788
Fax: 5716656961 3600 Joseph Siewick Dr
Fairfax, VA 220331709
Phone: 7033913600
Fax: 7033913079
Education & affiliations
- Medical / professional school
- Creighton University School Of Medicine
- Graduation year
- 1976
- CMS specialties
- Pediatric Medicine
Practice groups
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $25.71 |
Reporting companies
| Company | Amount |
|---|---|
| REGENERON HEALTHCARE SOLUTIONS, INC. | $25.71 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Pediatrics
- Taxonomy code
- 208000000X
- Enumeration date
- Apr 25, 2006
- Record updated
- Dec 29, 2021
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
2080P0214X
License reported: D0060604 MD
2080P0214X
License reported: MD32937 DC
2080P0214X
License reported: 0101039382 VA
208000000X · Primary
License reported: 0101039382 VA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
3023 Hamaker Ct Ste 300Fairfax, VA 22031-2240
- Phone
- (703) 876-2788
- Fax
- (571) 405-5916
Mailing address
PO BOX 37174BALTIMORE, MD 212973174
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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