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DR. MATHEW COLIN WILLIAMS PH.D.
NPI 1831252204
Psychologist - Clinical in Northport, NY

Active since December 18, 2006PECOS Enrolled
79 MIDDLEVILLE RD, NORTHPORT, NY 11768(631) 261-4400 Get Directions Write a Review

NPPES record last updated: April 8, 2008. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Mathew Colin Williams Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MATHEW COLIN WILLIAMS PH.D. (NPI 1831252204) is an individual clinical provider in Northport, New York, licensed in New York (017560-1) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1831252204
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. MATHEW COLIN WILLIAMSCredential: PH.D.
Location Address79 MIDDLEVILLE RDNorthport, NY 11768-2200
Mailing Address74 Orion WalkHolbrook, NY 11741-4922 · (631) 487-4234
Phone(631) 261-4400
Sole ProprietorNo
Enumeration DateDecember 18, 2006
Last NPPES UpdateApril 8, 2008
✔ NPI 1831252204 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in NY · 017560-1
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
79 MIDDLEVILLE RD, Northport, NY 11768
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mathew Colin Williams Ph.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11768 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$203.53 typical visit price
range $67.40 – $203.53
Typical copayment $50.88 (range $16.85 – $50.88)
Most-billed visit code 99205
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KERI MARIE PINELLI LMSW
Social Worker
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
JEANINE MICHELE DELGADO LCSW
Social Worker (Clinical)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
NELSON BARCELON MD
Anesthesiology
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
VAMC
General Acute Care Hospital
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
MS. SANDRA PAIGE SCHLESINGER LCSW-R
Social Worker
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
RICHARD THOMESEN NP
Nurse Practitioner (Psychiatric/Mental Health)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
MR. JOSEPH LAWRENCE MAGLIULO
Pharmacist
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
ANNE LETITIA GUTTING OTR MACHT
Occupational Therapist
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mathew Williams's NPI number?

The NPI number for Mathew Williams is 1831252204. It was assigned to this individual provider in the NPPES registry on December 18, 2006.

Where is Mathew Williams located?

Mathew Williams practices at 79 Middleville Rd, Northport, NY 11768. The listed phone number is (631) 261-4400.

What is Mathew Williams's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Mathew Williams enrolled in Medicare?

Yes. Mathew Williams is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mathew Williams was last updated on April 8, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.