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Errol Grannum MD in Mcallen, Texas

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Errol Grannum MD has Ophthalmology as his primary medical specialty. Their primary office is: 1910 S 1st St in Mcallen, Texas. There are 2 additional office locations for Errol Grannum MD that can be viewed towards the end of their profile. They attended Yale University School Of Medicine and graduated in 1989 (around 35 years of experience). They are not listed as doing telehealth appointments, but this may have changed. It can't hurt to call and check. If anything it may encourage them to make them available if they are not currently.


Errol O Grannum MD Office Phone and Directions

Errol Grannum MD
1910 S 1st St
Mcallen, Texas 78503
956-687-3937


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Phone: 956-687-3937


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Healthcare Info for Errol Grannum MD

Medical School: Yale University School Of Medicine
Graduation Year: 1989
The Primary Medical Specialty for Errol Grannum MD is listed as: Ophthalmology
Credentials: MD
Additional Credentials:
Approximate Years of Experience: 35
PAC (PECOS ID)#: 8022011915
NPI #: 1508897935
NPI Created On: 07/05/2006
NPI Last Updated Listed as: 07/08/2007
Primary Taxonomy Code: 207W00000X
License Number:
K5972
Listed Gender: Male

Insurance, Services, Charges


Forms of insurance accepted by include, but are not limited to:

  • Humana
  • Blue Cross Blue Shield
  • Medicare

They are listed as accepting new patients.

Languages spoken by staff include: English, Spanish.


Services and Procedures include:

  1. Laser repair to improve eye fluid flow, 1 or more sessions
  2. Creation of shunt to improve eye fluid flow with graft
  3. Removal of eyelashes by forceps
  4. Ultrasound of corneal structure and measurement
  5. Eye and medical examination for diagnosis and treatment, established patient
  6. Examination of cornea and iris using lens device and slit lamp
  7. Measurement of field of vision during daylight conditions
  8. Diagnostic imaging of optic nerve of eye
  9. Corneal hysteresis determination
  10. Photography of the retina
  11. New patient office or other outpatient visit, typically 45 minutes

Open Payments Data. This can include items to test (Durable Medical Equipment (DME)), Biological, Drug Samples, etc. This data must be reported to CMS.


Payments Total: $4

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 792788149

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: GLAUCOMA

Name of Drug #1: DURYSTA

Open Associated Drug #1: 0023-9652-01


Payments Total: $8

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 792788143

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: GLAUCOMA

Name of Drug #1: DURYSTA

Open Associated Drug #1: 0023-9652-01


Payments Total: $9

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 792788145

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: GLAUCOMA

Name of Drug #1: DURYSTA

Open Associated Drug #1: 0023-9652-01


Payments Total: $13

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 792788147

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: GLAUCOMA

Name of Drug #1: DURYSTA

Open Associated Drug #1: 0023-9652-01


Payments Total: $15

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 792788151

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: GLAUCOMA

Name of Drug #1: DURYSTA

Open Associated Drug #1: 0023-9652-01


Payments Total: $43

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 792788153

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: GLAUCOMA

Name of Drug #1: DURYSTA

Open Associated Drug #1: 0023-9652-01


Payments Total: $5

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 792788155

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: GLAUCOMA

Name of Drug #1: DURYSTA

Open Associated Drug #1: 0023-9652-01


Payments Total: $12

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 792788157

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: GLAUCOMA

Name of Drug #1: DURYSTA

Open Associated Drug #1: 0023-9652-01


Payments Total: $7

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 792788159

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: GLAUCOMA

Name of Drug #1: DURYSTA

Open Associated Drug #1: 0023-9652-01


Payments Total: $18

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 792788161

Being Disputed:: No

Product Related: Yes

Drug or Biological: Drug

Product Category #1: GLAUCOMA

Name of Drug #1: DURYSTA

Open Associated Drug #1: 0023-9652-01


Additional Office Locations

1. Alexander P. Sudarshan Md Pa
1058 E Los Ebanos Blvd
Brownsville, TX 78520
Group Members: 6

Phone: 956-687-3937

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2. Alexander P. Sudarshan Md Pa
1315 E 6th St
Weslaco, TX 78596
Suite 5
Group Members: 6

Phone: 956-687-3937

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Providers in the same medical group

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2.Matthew Aaker

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3.Justin Aaker

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4.Mohammad Aalai

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Physical Medicine And Rehabilitation

5.Carol Aalbers Cp

4560 S Carson St
Carson City Nv 89701-6915
Clinical Psychologist

6.Hina Aamir

602 S Atwood Rd
Bel Air Md 21014-4323
Psychiatry