NPI age
20 years
Enumerated 2005-11-03
● Active
Type 1 · Individual
DR. Mark D. Dalton, M.D.
Dalton is 1 of 70 internal medicine providers in Fort Worth and 1 of 1807 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2010-11-10
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1807 active internal medicine providers in Texas.
NPI age
20 years
≈ at median (19 yr)
State licenses
1 state
17% of peers hold multiple states
Subspecialties
0
35% of peers hold subspecialties
NPI lifetime · 2005 → 2026
2005-11Enumerated in NPPES
2005
2026
Where they practice
Practice location
900 W Magnolia Ave, Ste 100
Fort Worth, TX 761048517
Mailing address
6445 Harris Pkwy, Ste. 100
Fort Worth, TX 761324138
Specialties
-
Internal Medicine PrimaryAn internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 | 85Y012 | BCBS |
| 05 (TX) | 099326302 | |
| 01 | 7564001 | AETNA |
Practice context
Part of a multi-provider practice. 28 other active providers share this practice address in NPPES.
Recently enumerated nearby: 1 new internal medicine provider has been added in Fort Worth in the last 180 days.
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- 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.