Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Teresa Krystyna Lyson, M.D.
Hospitalist Physician in Austin, TX · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811923287
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Registry record
Entity type Individual (Type 1)
Name Dr. Teresa Krystyna Lyson
Credential M.D.
Sex Female
Practice address 5656 Bee Caves Rd. Bldg C Ste. 102, Austin, TX, 78746
Phone (512) 323-5465
Fax (512) 327-1390
Enumeration date Jun 25, 2006
Last updated in NPPES Feb 20, 2020
Taxonomy & licenses
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License K8312 (TX) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 044740101 | Medicaid | TX | - |
| 0447401-01 | Medicaid | TX | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Teresa Lyson?
Teresa Lyson is registered in NPPES with the primary taxonomy of Hospitalist Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-20.