● Active Type 1 · Individual

Thomas A Carlson, MD

Internal Medicine·Austin, TX· NPI 1861453458 · Enumerated 2006 · 20 years on NPI

Carlson is 1 of 45 internal medicine providers in Austin and 1 of 883 in Texas.

NPI age

20 years

Enumerated 2006-03-31

Primary specialty

Internal Medicine

Plus 1 subspecialty

Licensed in

1 state

Status

Active

No deactivations on record

Last NPPES update

2014-10-16

Source: monthly bulk 2026-05

Sole proprietor

May be part of a larger org

How this provider compares

Across 883 active internal medicine providers in Texas.

NPI age

20 years

↑ 3 yr above median (17 yr)

State licenses

1 state

21% of peers hold multiple states

Subspecialties

In the 72% of peers with subspecialties

NPI lifetime · 2006 → 2026

2006-03Enumerated in NPPES

2006 2026

Where they practice

Practice location

3801 N Lamar Blvd, Suite 300

Austin, TX 787564080

📞 5122064341fax 5124071947

Mailing address

7800 Shoal Creek Blvd, Suite 205n

Austin, TX 787571098

📞 5122064300fax 5122064350

Specialties

Allopathic & Osteopathic Physicians › Internal Medicine

Internal Medicine Primary

An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical...

TX license #J3065 taxonomy 207RI0011X
Internal Medicine

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

TX license #J3065 taxonomy 207RC0000X

Identifiers

Type	Value	Notes
05 (TX)	044491103

Practice context

Part of a multi-provider practice. 47 other active providers share this practice address in NPPES.

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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.