Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Theodore Francis Tenczynski, M.D.

Hematology & Oncology Physician in Houston, TX · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1912949579

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Registry record

Entity type Individual (Type 1)

Name Dr. Theodore Francis Tenczynski

Credential M.D.

Sex Male

Practice address 1631 North Loop W, Suite 155, Houston, TX, 77008

Phone (713) 802-9000

Fax (713) 802-2701

Enumeration date Jun 11, 2006

Last updated in NPPES Jul 1, 2014

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License E5962 (TX) Primary

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
098983203	Medicaid	TX	-
8P0573	Other	TX	BCBS OF TX
1845798	Other	-	AETNA
0004386439	Other	-	AETNA
098983201	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.

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Frequently asked questions

Where does Theodore Tenczynski practice?

The practice location on file with NPPES is in Houston, TX. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Theodore Tenczynski?

The National Provider Identifier (NPI) for Theodore Tenczynski is 1912949579, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-07-01.