NPI age
12 years
Enumerated 2013-07-22
● Active
Type 1 · Individual
DR. Ian Sidney Matthews, D.O.
Matthews is 1 of 454 internal medicine providers in Fort Worth and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX, MO
2 states
Status
Active
No deactivations on record
Last NPPES update
2026-04-22
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
12 years
↓ 5 yr below median (17 yr)
State licenses
2 states
Top 88% — 12% of peers are multi-state
Subspecialties
1
In the 33% of peers with subspecialties
NPI lifetime · 2013 → 2026
2013-07Enumerated in NPPES
2013
2026
Where they practice
Practice location
855 Montgomery St
Fort Worth, TX 761072553
Mailing address
855 Montgomery St
Fort Worth, TX 761072553
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,...
-
Neuromusculoskeletal Medicine & OMMThe Neuromusculoskeletal Medicine and Osteopathic Manipulative Medicine physician directs special attention to the neuromusculoskeletal system and its interaction with other body systems. Neuromusculoskeletal Medicine and Osteopathic...
Practice context
Part of a multi-provider practice. 237 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
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