NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Harold Morris Block Jr., M.D.

General Practice Physician in El Paso, TX · enumerated 2005 · practices at Right Track Health Center PA.

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

National Provider Identifier

1104829084

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Harold Morris Block Jr.
Credential M.D.
Sex Male
Practice address 2126 Montana Ave, El Paso, TX, 79903
Phone (915) 838-8484
Fax (915) 351-2203
Enumeration date May 24, 2005
Last updated in NPPES Feb 13, 2009

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License D0802 (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
127094401 Medicaid TX -
127094405 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Harold Block?
The National Provider Identifier (NPI) for Harold Block is 1104829084, a Type 1 (individual) record in the CMS NPPES registry.
Where does Harold Block practice?
The practice location on file with NPPES is in El Paso, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-13.