Errol Olwyn Grannum, MD in Mcallen, TX

Errol Olwyn Grannum, MD is a medicare enrolled "Ophthalmology" physician in Mcallen, Texas. He went to Yale University School Of Medicine and graduated in 1989 and has 35 years of diverse experience with area of expertise as Ophthalmology. He is a member of the group practice Alexander P. Sudarshan Md Pa and his current practice location is 1910 S 1st St, Mcallen, Texas. You can reach out to his office (for appointments etc.) via phone at (956) 687-3937.

Errol Olwyn Grannum is licensed to practice in Texas (license number K5972) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1508897935.

Contact Information

	Errol Olwyn Grannum, MD
	1910 S 1st St, Mcallen, TX 78503-1255
	(956) 687-3937
	(956) 687-3938

Map and Direction

Physician's Profile

Full Name	Errol Olwyn Grannum
Gender	Male
Speciality	Ophthalmology
Experience	35 Years
Location	1910 S 1st St, Mcallen, Texas
Accepts Medicare Assignments	Yes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.

Medical Education and Training:

Errol Olwyn Grannum attended and graduated from Yale University School Of Medicine in 1989

NPI Data:

NPI Number: 1508897935
Provider Enumeration Date: 07/05/2006
Last Update Date: 07/08/2007

Medicare PECOS Information:

PECOS PAC ID: 8022011915
Enrollment ID: I20060815000073

Medical Identifiers

Medical identifiers for Errol Olwyn Grannum such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1508897935	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207W00000X	Ophthalmology	K5972 (Texas)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Rio Grande Regional Hospital	Mcallen, TX	Hospital

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Errol Olwyn Grannum allows following entities to bill medicare on his behalf.

Entity Name	Errol O Grannum
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1457377194 PECOS PAC ID: 4486657376 Enrollment ID: O20060815000068

Entity Name	Ophthalmic Consultants Of Texas P.a.
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1063513794 PECOS PAC ID: 7416055686 Enrollment ID: O20070612000372

Entity Name	Alexander P. Sudarshan Md Pa
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1295014389 PECOS PAC ID: 7113199217 Enrollment ID: O20111014000325

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Errol Olwyn Grannum is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing Address	Practice Location Address
Errol Olwyn Grannum, MD 1910 S 1st St, Mcallen, TX 78503-1255 Ph: (956) 687-3937	Errol Olwyn Grannum, MD 1910 S 1st St, Mcallen, TX 78503-1255 Ph: (956) 687-3937

Reviews and Comments

Ophthalmology Doctors in Mcallen, TX

Vimal Sarup, MD Ophthalmology Medicare: Medicare Enrolled Practice Location: 1309 E Ridge Rd Ste 1, Mcallen, TX 78503 Phone: 956-631-8875 Fax: 956-683-1502
Dr. Rachel Ann Gelman, M.D. Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 5201 N G St, Mcallen, TX 78504 Phone: 956-305-5795 Fax: 956-618-4639
Dr. Raul Adrian Pena, MD Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 1400 E Ridge Rd Ste 10, Mcallen, TX 78503 Phone: 956-661-8733 Fax: 956-661-8724
Cooper M Clark, D.O. Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 1309 E Ridge Rd, Suite 1, Mcallen, TX 78503 Phone: 956-631-8875 Fax: 956-682-6280
Dr. Wade Alan Graham, M.D. Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 1400 E Ridge Rd Ste 3, Mcallen, TX 78503 Phone: 956-429-4900 Fax: 956-429-4901
Dr. Nehal Rashmikant Patel, M.D. Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 1309 East Ridge Road, Suite 1, Mcallen, TX 78503 Phone: 956-631-8875 Fax: 956-631-9134
Dr. Shanna Jean Brown, M.D. Ophthalmology Medicare: Accepting Medicare Assignments Practice Location: 1309 E Ridge Rd Ste 1, Mcallen, TX 78503 Phone: 956-631-8875 Fax: 956-683-1502

Errol Olwyn Grannum, MD - Medicare Ophthalmology in Mcallen, TX