Dr Michael Andrew Williston, PSYD in Wilmington, DE

Dr Michael Andrew Williston, PSYD is a medicare enrolled "Psychologist" provider in Wilmington, Delaware. His current practice location is 4000 Nexus Dr Ste Ne3-100, Wilmington, Delaware. You can reach out to his office (for appointments etc.) via phone at (302) 320-9771.

Dr Michael Andrew Williston is licensed to practice in Delaware (license number B1-0011487) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1093090474.

Contact Information

	Dr Michael Andrew Williston, PSYD
	4000 Nexus Dr Ste Ne3-100, Wilmington, DE 19803-3000
	(302) 320-9771
	(302) 623-7964

Map and Direction

Healthcare Provider's Profile

Full Name	Dr Michael Andrew Williston
Gender	Male
Speciality	Psychologist
Location	4000 Nexus Dr Ste Ne3-100, Wilmington, Delaware
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1093090474
Provider Enumeration Date: 10/17/2011
Last Update Date: 01/13/2025

Medicare PECOS Information:

PECOS PAC ID: 6204074065
Enrollment ID: I20250114000738

Medical Identifiers

Medical identifiers for Dr Michael Andrew Williston such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1093090474	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
103T00000X	Psychologist	B1-0011487 (Delaware)	Primary
103T00000X	Psychologist	PS017269 (Pennsylvania)	Secondary

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. Dr Michael Andrew Williston allows following entities to bill medicare on his behalf.

Entity Name	Christiana Care Health Services Inc
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1770568107 PECOS PAC ID: 9739097569 Enrollment ID: O20031201000477

Entity Name	Christianacare Virtual Health Practice Pa
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1619562410 PECOS PAC ID: 2961805528 Enrollment ID: O20210721000006

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. Dr Michael Andrew Williston 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
Dr Michael Andrew Williston, PSYD 112 N Broad St, Philadelphia, PA 19102-1512 Ph: (215) 568-0860	Dr Michael Andrew Williston, PSYD 4000 Nexus Dr Ste Ne3-100, Wilmington, DE 19803-3000 Ph: (302) 320-9771

Reviews and Comments

Psychologist in Wilmington, DE

Dr. Mary Iampietro, PH.D. Psychologist Medicare: Not Enrolled in Medicare Practice Location: 1600 Rockland Rd, Wilmington, DE 19803 Phone: 302-651-4200
Sergio Oliva, Psychologist Medicare: Not Enrolled in Medicare Practice Location: 1311 Brandywine Blvd, Wilmington, DE 19809 Phone: 302-793-5072 Fax: 302-765-1996
Celia Teira Serrano, PH.D. Psychologist Medicare: Not Enrolled in Medicare Practice Location: 1502 Spruce Ave, Wilmington, DE 19805 Phone: 302-552-3797
Ms. Margaret Mary Graney, CADC Psychologist Medicare: Not Enrolled in Medicare Practice Location: 625 N Orange St, Wilmington, DE 19801 Phone: 302-656-4044 Fax: 302-656-3439
Dr. Lisa Deleonardo, PSY.D. Psychologist Medicare: Not Enrolled in Medicare Practice Location: 5301 Limestone Rd, Suite 102, Wilmington, DE 19808 Phone: 302-234-3443 Fax: 302-234-1017
Dr. Darren Lee Whaley, PSY.D. Psychologist Medicare: Accepting Medicare Assignments Practice Location: 1521 Concord Pike Ste 103, Wilmington, DE 19803 Phone: 302-428-0205 Fax: 302-428-1123
Danielle Gentile, Psychologist Medicare: Not Enrolled in Medicare Practice Location: 1311 Brandywine Blvd, Wilmington, DE 19809 Phone: 302-793-5073

Dr Michael Andrew Williston, PSYD - Medicare Psychologist in Wilmington, DE