John F Grehan, MD PHD in Sioux Falls, SD - Medicare Thoracic Surgery

John F Grehan, MD PHD is a medicare enrolled "Thoracic Surgery (cardiothoracic Vascular Surgery)" physician in Sioux Falls, South Dakota. He went to University Of Minnesota Medical School and graduated in 1995 and has 29 years of diverse experience with area of expertise as Thoracic Surgery. He is a member of the group practice Sanford Clinic and his current practice location is 1301 W 18th St, Sioux Falls, South Dakota. You can reach out to his office (for appointments etc.) via phone at (605) 312-2100.

John F Grehan is licensed to practice in South Dakota (license number 13118) 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 1275549784.

Contact Information

	John F Grehan, MD PHD
	1301 W 18th St, Sioux Falls, SD 57105-0401
	(605) 312-2100
	Not Available

Map and Direction

Physician's Profile

Full Name	John F Grehan
Gender	Male
Speciality	Thoracic Surgery
Experience	29 Years
Location	1301 W 18th St, Sioux Falls, South Dakota
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:

John F Grehan attended and graduated from University Of Minnesota Medical School in 1995

NPI Data:

NPI Number: 1275549784
Provider Enumeration Date: 08/01/2006
Last Update Date: 04/09/2022

Medicare PECOS Information:

PECOS PAC ID: 6204831324
Enrollment ID: I20220412001635

Medical Identifiers

Medical identifiers for John F Grehan such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1275549784	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
208G00000X	Thoracic Surgery (cardiothoracic Vascular Surgery)	35.088377 (Ohio)	Secondary
208G00000X	Thoracic Surgery (cardiothoracic Vascular Surgery)	13118 (South Dakota)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Sanford Usd Medical Center	Sioux falls, SD	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Sanford Clinic	0244143824	228

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. John F Grehan allows following entities to bill medicare on his behalf.

Entity Name	Sanford Clinic
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1396764254 PECOS PAC ID: 0244143824 Enrollment ID: O20031110000532

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. John F Grehan 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
John F Grehan, MD PHD Po Box 5074, Sioux Falls, SD 57117-5074 Ph: () -	John F Grehan, MD PHD 1301 W 18th St, Sioux Falls, SD 57105-0401 Ph: (605) 312-2100

Reviews and Comments

Thoracic Surgery (Cardiothoracic Vascular Surgery) Doctors in Sioux Falls, SD

Dr. Paul E Meyer, MD Thoracic Surgery (Cardiothoracic Vascular Surgery) Medicare: Accepting Medicare Assignments Practice Location: 4520 W 69th St, Sioux Falls, SD 57108 Phone: 605-977-5000 Fax: 605-977-5377
Dr. Leycester Nmn Owens Jr., M. D. Thoracic Surgery (Cardiothoracic Vascular Surgery) Medicare: Not Enrolled in Medicare Practice Location: 700 E Ridge Rd, Sioux Falls, SD 57105 Phone: 605-331-3554
Dr. Tommy R Reynolds, MD Thoracic Surgery (Cardiothoracic Vascular Surgery) Medicare: Accepting Medicare Assignments Practice Location: 4520 W 69th St, Sioux Falls, SD 57108 Phone: 605-977-5000 Fax: 605-977-5377
Dr. Lewis C Ofstein, MD Thoracic Surgery (Cardiothoracic Vascular Surgery) Medicare: Not Enrolled in Medicare Practice Location: 4520 W 69th St, Sioux Falls, SD 57108 Phone: 605-977-5000 Fax: 605-977-5377
Kalyan Chakravarthy Vunnamadala, M.D. Thoracic Surgery (Cardiothoracic Vascular Surgery) Medicare: Accepting Medicare Assignments Practice Location: 4520 W 69th St, Sioux Falls, SD 57108 Phone: 605-977-5000 Fax: 605-977-5377
Marc J Schechter, MD Thoracic Surgery (Cardiothoracic Vascular Surgery) Medicare: Not Enrolled in Medicare Practice Location: 7307 S Grand Arbor Ct, Sioux Falls, SD 57108 Phone: 605-941-1866

John F Grehan, MD PHD - Medicare Thoracic Surgery in Sioux Falls, SD