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Barry Alan Firstenberg, DO

Hematology & Oncology Physician in Grapevine, TX · enumerated 2005.

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

National Provider Identifier

1215939764

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Registry record

Entity type Individual (Type 1)
Name Barry Alan Firstenberg
Credential DO
Sex Male
Practice address 1631 Lancaster Dr Ste 150, Grapevine, TX, 76051
Phone (817) 251-9080
Fax (817) 251-9082
Enumeration date Aug 15, 2005
Last updated in NPPES Nov 16, 2021

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License G6294 (TX) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
115782814 Medicaid TX -
115782813 Medicaid TX -
115782812 Medicaid TX -
115782811 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

What specialty is Barry Firstenberg?
Barry Firstenberg is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-16.