Michael Andrew Williston, PSY.D.

Psychologist · Wilmington, DE

Individual Active NPI

NPI number 1093090474

Practice location

4000 Nexus Dr Ste NE3-100
Wilmington, DE 19803-3000
Phone
(302) 320-9771
Fax
(302) 623-7964

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NPI record

NPI
1093090474
Entity type
Individual (Type 1)
Enumeration date
October 17, 2011
Last updated
January 13, 2025
Certified
January 13, 2025
Sole proprietor
No

Specialties & taxonomy codes

TaxonomyCodeLicenseState
Psychologist Primary 103T00000X B1-0011487 DE
Psychologist 103T00000X PS017269 PA

Mailing address

112 N Broad St
Philadelphia, PA 19102-1512
Phone
(215) 568-0860

Other practice locations (1)

  • 112 N Broad St, Philadelphia, PA 19102-1512 · (215) 568-0860

About Dr. Williston

Michael Andrew Williston, PSY.D. is a healthcare provider registered in the NPI registry with the primary taxonomy Psychologist (code 103T00000X). The practice location is 4000 Nexus Dr Ste NE3-100, Wilmington, DE 19803-3000. The NPI number 1093090474 was assigned on October 17, 2011 and the record was last updated on January 13, 2025.

Dr. Williston lists 2 licenses in the registry: #B1-0011487 (DE) for Psychologist; #PS017269 (PA) for Psychologist. License numbers are self-reported to NPPES; verify them with the state licensing board.

Frequently asked questions

What is the NPI number of Michael Andrew Williston, PSY.D.?

The NPI number is 1093090474.

What is the phone number of Dr. Williston?

The phone number listed for the practice location is (302) 320-9771.

Where is Dr. Williston located?

4000 Nexus Dr Ste NE3-100, Wilmington, DE 19803-3000.

What is the taxonomy code for Dr. Williston?

The primary taxonomy code is 103T00000X – Psychologist; 1 more listed above.

Is this information correct?

All details come from the public NPPES registry. Providers can update their record at nppes.cms.hhs.gov; changes appear here after the next weekly update.

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