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ERROL O GRANNUM
NPI 1457377194
Ophthalmology in Mcallen, TX

Active since July 14, 2006
1910 S 1ST ST, SUITE 400, MCALLEN, TX 78503(956) 687-3937(956) 687-3938 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Errol O Grannum NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ERROL O GRANNUM (NPI 1457377194) is a healthcare organization registered as an ophthalmology in Mcallen, Texas and active in the NPI registry since July 2006. The organization lists Errol Olwyn Grannum, Owner, as its authorized official.

NPPES Registry Identity

NPI1457377194
Entity TypeOrganization
Primary Taxonomy207W00000X
Legal Business NameERROL O GRANNUM
Location Address1910 S 1ST ST, SUITE 400Mcallen, TX 78503-1255
Mailing Address1910 S 1st St, Suite 400Mcallen, TX 78503-1255 · (956) 687-3937 · Fax (956) 687-3938
Phone(956) 687-3937
Fax(956) 687-3938
Organization SubpartNo
Authorized OfficialErrol Olwyn GrannumOwner · (956) 687-3937
Enumeration DateJuly 14, 2006
Last NPPES UpdateAugust 22, 2020
✔ NPI 1457377194 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
License✔ Licensed in TX · K5972
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
1910 S 1ST ST, Mcallen, TX 78503
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Molina Healthcare.Insurance ›

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SOUTH TEXAS NEUROLOGICAL CENTER, P.A.
Psychiatry & Neurology (Neurology)
1910 S 1ST ST, SUITE 200
MCALLEN, TX 78503
Hidalgo County (956) 687-7885
RUY MIRELES QUINTANILLA
Specialist
1910 S 1ST ST, STE 200
MCALLEN, TX 78503
Hidalgo County (956) 687-7885
ERROL OLWYN GRANNUM MD
Ophthalmology
1910 S 1ST ST
MCALLEN, TX 78503
Hidalgo County (956) 687-3937
DR. ROBERTO A ARGUELLO M.D.
Ophthalmology
1910 S 1ST ST, SUITE 100
MCALLEN, TX 78503
Hidalgo County (956) 687-8475
TEXAS BIONICS, INC
Prosthetic/Orthotic Supplier
1910 S 1ST ST, SUITE 500
MCALLEN, TX 78503
Hidalgo County (956) 994-9528

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Errol O Grannum's NPI number?

The NPI number for Errol O Grannum is 1457377194. It was assigned to this organization in the NPPES registry on July 14, 2006.

Where is Errol O Grannum located?

Errol O Grannum is located at 1910 S 1st St Suite 400, Mcallen, TX 78503. The listed phone number is (956) 687-3937.

What is Errol O Grannum's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

What insurance does Errol O Grannum accept?

Health plans from Molina Healthcare list Errol O Grannum as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Errol O Grannum was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.