William J Mast, FNP-C in Greenville, TX - Medicare Nurse Practitioner

William J Mast, FNP-C is a medicare enrolled "Nurse Practitioner - Family" in Greenville, Texas. He graduated from nursing school in 2022 and has 4 years of diverse experience with area of expertise as Nurse Practitioner. He is a member of the group practice Matthew D Barrows Md Pa and his current practice location is 3900 Joe Ramsey Blvd E Ste 6, Greenville, Texas. You can reach out to his office (for appointments etc.) via phone at (903) 455-1100.

William J Mast is licensed to practice in Texas (license number 1098502) 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 1659089811.

Contact Information

	William J Mast, FNP-C
	3900 Joe Ramsey Blvd E Ste 6, Greenville, TX 75401-7705
	(903) 455-1100
	(903) 455-1114

Map and Direction

Provider's Profile

Full Name	William J Mast
Gender	Male
Speciality	Nurse Practitioner
Experience	4 Years
Location	3900 Joe Ramsey Blvd E Ste 6, Greenville, 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:

William J Mast graduated from nursing school in 2022

NPI Data:

NPI Number: 1659089811
Provider Enumeration Date: 11/07/2022
Last Update Date: 12/08/2025

Medicare PECOS Information:

PECOS PAC ID: 3779952320
Enrollment ID: I20221203000591

Medical Identifiers

Medical identifiers for William J Mast such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1659089811	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
363LF0000X	Nurse Practitioner - Family	1098502 (Texas)	Primary

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Matthew D Barrows Md Pa	6305894171	22

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. William J Mast allows following entities to bill medicare on his behalf.

Entity Name	Matthew D Barrows Md Pa
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1699763490 PECOS PAC ID: 6305894171 Enrollment ID: O20050107000786

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. William J Mast 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
William J Mast, FNP-C 1790 N Stonebridge Dr, Mckinney, TX 75071-7437 Ph: (972) 390-9002	William J Mast, FNP-C 3900 Joe Ramsey Blvd E Ste 6, Greenville, TX 75401-7705 Ph: (903) 455-1100

Reviews and Comments

Nurse Practitioner Nurses in Greenville, TX

Sunny Makolo, Nurse Practitioner Medicare: Not Enrolled in Medicare Practice Location: 2405 Stonewall St, Greenville, TX 75401 Phone: 903-454-3300 Fax: 903-454-3307
Patrick D Hill, FNP Nurse Practitioner Medicare: Medicare Enrolled Practice Location: 4215 Joe Ramsey Blvd E, Greenville, TX 75401 Phone: 580-263-0091
Mr. William Thomas Crowe Iv, RN, FNP Nurse Practitioner Medicare: Accepting Medicare Assignments Practice Location: 4101 Wesley St, Suite B, Greenville, TX 75401 Phone: 903-454-7555 Fax: 903-450-4420
Jennifer Carter, WHNP Nurse Practitioner Medicare: Not Enrolled in Medicare Practice Location: 4221 Ridgecrest, Suite 103, Greenville, TX 75402 Phone: 903-454-2130 Fax: 903-454-5487
Mrs. Sarah Rhea Money, MSN, APRN, FNP-C Nurse Practitioner Medicare: Accepting Medicare Assignments Practice Location: 4400 I 30 W Ste 100, Greenville, TX 75402 Phone: 469-800-3500
Craystal Gail Salazar, RN, CPNP Nurse Practitioner Medicare: Not Enrolled in Medicare Practice Location: 4311 Wesley St, Greenville, TX 75401 Phone: 903-455-5958 Fax: 903-455-1604
Jennifer C Carpenter, FNP Nurse Practitioner Medicare: Medicare Enrolled Practice Location: 4501 Joe Ramsey Blvd E Ste 100, Greenville, TX 75401 Phone: 903-408-5800 Fax: 903-455-8232

William J Mast, FNP-C - Medicare Nurse Practitioner in Greenville, TX