Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. RANDAL LAWRENCE WILLIAMS PSYD
NPI 1043797376
Psychologist - Clinical in Westfield, MA

Active since July 19, 2018PECOS Enrolled
77 MILL ST, WESTFIELD, MA 01085(413) 726-5157(413) 572-4144 Get Directions Write a Review

NPPES record last updated: October 21, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 23, 2018, Jul 19, 2018 (2 updates tracked since 2018).

About Mr. Randal Lawrence Williams Psyd NPPES

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

MR. RANDAL LAWRENCE WILLIAMS PSYD (NPI 1043797376) is an individual clinical provider in Westfield, Massachusetts, licensed in Massachusetts (PSY10001840) and active in the NPI registry since July 2018. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1043797376
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameMR. RANDAL LAWRENCE WILLIAMSCredential: PSYD
Location Address77 MILL STWestfield, MA 01085-4598
Mailing AddressPo Box 437Lenox, MA 01240-0437 · (413) 269-8674 · Fax (413) 216-9693
Fax(413) 572-4144
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateJuly 19, 2018
Last NPPES UpdateOctober 21, 20262 updates tracked since enumeration
NPPES CertifiedOctober 21, 2026
✔ NPI 1043797376 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in MA · PSY10001840
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.
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License LMHC10000098 (MA)
77 MILL ST, Westfield, MA 01085

Secondary Practice Locations 2

Location 1850 Summer St Bldg M11Lenox, MA 01240-2860 · Phone (413) 269-8674 · Fax (413) 216-9693
Location 23 Elm StStockbridge, MA 01262-7721 · Phone (413) 269-8674 · Fax (413) 216-9693

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Randal Lawrence Williams Psyd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4385094671
PECOS Enrollment IDI20231228003116
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.

Medicare Billing Reassignment

Medicare enrollment records show Randal Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mental Health (Including Community Mental Health Center)
417 LIBERTY ST
Springfield, MA 01104
  • Reassigned Medicare billing, Massachusetts enrollment
  • 211 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 45 minutes 90834
Psychotherapy is a treatment method where you converse with a therapist about your thoughts, feelings, and behaviors. In a 45-minute session, the therapist assists you in understanding and managing your mental health concerns, improving emotional wellness, and promoting personal growth.
247 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01085 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
$177.36 typical visit price
range $58.86 – $177.36
Typical copayment $44.34 (range $14.71 – $44.34)
Most-billed visit code 99205
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

Social Worker (Clinical)
77 MILL ST
WESTFIELD, MA 01085
Counselor
77 MILL ST, SUITE 251
WESTFIELD, MA 01085
Social Worker (Clinical)
77 MILL ST, SUITE 251
WESTFIELD, MA 01085
Social Worker (Clinical)
77 MILL ST, SUITE 251
WESTFIELD, MA 01085
Social Worker (Clinical)
77 MILL ST
WESTFIELD, MA 01085
Social Worker (Clinical)
77 MILL ST
WESTFIELD, MA 01085
Counselor
77 MILL ST
WESTFIELD, MA 01085
Counselor
77 MILL ST
WESTFIELD, MA 01085

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 Randal Williams's NPI number?

The NPI number for Randal Williams is 1043797376. It was assigned to this individual provider in the NPPES registry on July 19, 2018.

Where is Randal Williams located?

Randal Williams practices at 77 Mill St, Westfield, MA 01085. The listed phone number is (413) 726-5157.

What is Randal Williams's specialty?

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

Is Randal Williams enrolled in Medicare?

Yes. Randal Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Randal Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Randal Williams reassigns Medicare benefits to Behavioral Health Network Inc (Springfield, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Randal Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Randal Williams accept?

Health plans from Harvard Pilgrim Health Care list Randal Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Randal Williams was last updated on October 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days 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.