Errol O Grannum is a Ophthalmology Clinic in Mcallen, Texas. It is situated at 1910 S 1st St, Suite 400, Mcallen and its contact number is 956-687-3937. The authorized person of Errol O Grannum is Errol Olwyn Grannum
who is Owner of the clinic and their contact number is 956-687-3937. Primary license number for Errol O Grannum is K5972 (Ophthalmology) in Texas.
Errol O Grannum Clinic have ophthalmologists who have the knowledge and professional skills 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.
Complete Clinic Profile:
Errol O Grannum Clinic speciality, address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
| Specialization: | Ophthalmology |
| Clinic Address: | 1910 S 1st St, Suite 400, Mcallen,
Texas, 78503-1255 |
| Phone: | 956-687-3937 |
| Fax: | 956-687-3938 |
Authorized/Official Person Profile:
Officially authorized person to contact for any management issues or complaints of this clinic are as below. Person's position and contact details are also mentioned below.
| Name: | Errol Olwyn Grannum |
| Position: | Owner |
| Contact Number: | 956-687-3937 |
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details for Errol O Grannum Clinic are as mentioned below.
| NPI Number: | 1457377194 |
| NPI Enumeration Date: | 14 Jul, 2006 |
| NPI Last Update On: | 22 Aug, 2020 |
Medical Licenses:
Organizations can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Errol O Grannum are as mentioned below.
| Specialization | License Number | State | Status | |
| Ophthalmology | K5972 | Texas | Primary | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | Errol O Grannum
1910 S 1st St, Suite 400
Mcallen, Texas |
| Zip: | 78503-1255 |
| Phone Number: | 956-687-3937 |
| Fax Number: | 956-687-3938 |
Patients can reach Errol O Grannum at
1910 S 1st St, Suite 400, Mcallen, Texas or can
call to book an appointment on 956-687-3937.
Comments/ Reviews:
Patients can read all the reviews posted for Errol O Grannum below. You may also share your own experience like the quality of treatment, behavior, and overall care provided by Errol O Grannum. It will help others make informed decisions.
** Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.