NPI age
19 years
Enumerated 2006-08-05
● Active
Type 1 · Individual
John Darren Clark, MD
Clark is 1 of 142 internal medicine providers in Arlington and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX, AR
2 states
Status
Active
No deactivations on record
Last NPPES update
2009-05-26
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 12343 active internal medicine providers in Texas.
NPI age
19 years
↑ 2 yr above median (17 yr)
State licenses
2 states
Top 88% — 12% of peers are multi-state
Subspecialties
0
33% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-08Enumerated in NPPES
2006
2026
Where they practice
Practice location
800 W Randol Mill Rd Ste 2300
Arlington, TX 760122504
Mailing address
800 W Randol Mill Rd Ste 2300
Arlington, TX 760122504
Specialties
-
Internal Medicine PrimaryA physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer,...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (AR) | 140285001 | |
| 05 (TX) | 198329802 | |
| 05 (TX) | 198329803 | |
| 05 (TX) | 198329801 |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 8 other active providers share this practice address in NPPES.
Recently enumerated nearby: 1 new internal medicine provider has been added in Arlington in the last 180 days.
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Request a quote →How to verify this provider
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.