DR. WILLIAM ZELLA PHD
NPI 1750461109
Psychologist - Health Service in Weymouth, MA

Q: What is William Zella's NPI number?

The NPI number for William Zella is 1750461109. It was assigned to this individual provider in the NPPES registry on October 17, 2006.

Q: What is William Zella's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Health Service, with taxonomy code 103TH0100X.

Q: When was this NPI record last updated?

The NPPES record for William Zella was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.

Active since October 17, 2006PECOS EnrolledAccepts Medicare Assignment

169 LIBBEY INDUSTRIAL PKWY, 2ND FLOOR, WEYMOUTH, MA 02189(781) 682-1060(781) 682-1061 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

On this page

About Dr. William Zella Phd NPPES

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

DR. WILLIAM ZELLA PHD (NPI 1750461109) is an individual health service provider in Weymouth, Massachusetts, licensed in Massachusetts (6702) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1979).

NPPES Registry Identity

NPI1750461109

Entity TypeIndividualMale

Primary Taxonomy103TH0100X

Provider Legal NameDR. WILLIAM ZELLACredential: PHD

Location Address169 LIBBEY INDUSTRIAL PKWY, 2ND FLOORWeymouth, MA 02189-3101

Mailing Address169 Libbey Industrial Pkwy, 2nd FloorWeymouth, MA 02189-3101 · (781) 682-1060 · Fax (781) 682-1061

Phone(781) 682-1060

Fax(781) 682-1061

Sole ProprietorNo

Medical School CMSOtherGraduated 1979

Enumeration DateOctober 17, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1750461109 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · Health ServiceBehavioral Health & Social Service Providers

Taxonomy Code103TH0100X

License✔ Licensed in MA · 6702

Definition

A psychologist, certified/licensed at the independent practice level in his/her state, who is duly trained and experienced in the delivery of direct, preventative, assessment, and therapeutic intervention services to individuals whose growth, adjustment, or functioning is actually impaired or is demonstrably at high risk of impairment (1974).

Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License 6702 (MA)

Other Identifiers 2

OtherW06249MA · Bcbs Provider Number

Other6100775MH · Evercare Provider Number

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Zella Phd 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 ID9032134838

PECOS Enrollment IDI20051011000597

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.

Areas of Expertise CMS Part B claims 2

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.

533 services62 patients

Psychiatric diagnostic evaluation 90791

A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.

50 services50 patients

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.

JOHN L JOSEPHS JR. MA

Counselor (Mental Health)

169 LIBBEY INDUSTRIAL PKWY, 2ND FLOOR
WEYMOUTH, MA 02189

Norfolk County (781) 682-1060

KATHLEEN FRANCES COSGROVE

Social Worker (Clinical)

169 LIBBEY INDUSTRIAL PKWY
EAST WEYMOUTH, MA 02189

Norfolk County (508) 238-3481

DR. H SUZANNE MOON PHD

Psychologist (Health Service)

169 LIBBEY INDUSTRIAL PKWY, 2ND FLOOR
WEYMOUTH, MA 02189

Norfolk County (781) 682-1060

DR. YANGMU XU PHD

Psychologist (Clinical)

169 LIBBEY INDUSTRIAL PKWY
WEYMOUTH, MA 02189

Norfolk County (781) 551-0999

CAROLINE BYRON

Psychologist

169 LIBBEY INDUSTRIAL PKWY
WEYMOUTH, MA 02189

Norfolk County (781) 551-0999

MS. VANESSA LOUISE CASAVANT MA

Psychologist (Clinical)

169 LIBBEY INDUSTRIAL PKWY, 2ND FLOOR
WEYMOUTH, MA 02189

Norfolk County (781) 551-0999

NEUROBEHAVIORAL ASSOCIATES III, INC

Psychiatry & Neurology (Geriatric Psychiatry)

169 LIBBEY INDUSTRIAL PKWY, 2ND FLOOR
WEYMOUTH, MA 02189

Norfolk County (781) 682-1060

DAVID BARBOSA PSYD

Psychologist (Clinical)

169 LIBBEY INDUSTRIAL PKWY
WEYMOUTH, MA 02189

Norfolk County (781) 551-0999

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 William Zella's NPI number?

The NPI number for William Zella is 1750461109. It was assigned to this individual provider in the NPPES registry on October 17, 2006.

Where is William Zella located?

William Zella practices at 169 Libbey Industrial Pkwy 2nd Floor, Weymouth, MA 02189. The listed phone number is (781) 682-1060.

What is William Zella's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Health Service, with taxonomy code 103TH0100X.

Is William Zella enrolled in Medicare?

Yes. William Zella 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.

What insurance does William Zella accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list William Zella 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 William Zella was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.