DR. WILLIAM DOUGLAS GAMMON PH.D.
NPI 1306892898
Psychologist - Clinical in Billerica, MA

Q: What is William Gammon's NPI number?

The NPI number for William Gammon is 1306892898. It was assigned to this individual provider in the NPPES registry on May 26, 2006.

Q: What is William Gammon's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for William Gammon was last updated on March 4, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since May 26, 2006PECOS EnrolledAccepts Medicare Assignment

572 BOSTON RD, SUITE 14, BILLERICA, MA 01821(781) 696-2070(978) 294-8977 Get Directions Write a Review

NPPES record last updated: March 4, 2015. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Dr. William Douglas Gammon Ph.d. NPPES

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

DR. WILLIAM DOUGLAS GAMMON PH.D. (NPI 1306892898) is an individual clinical provider in Billerica, Massachusetts, licensed in Massachusetts (2402) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1978).

NPPES Registry Identity

NPI1306892898

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. WILLIAM DOUGLAS GAMMONCredential: PH.D.

Location Address572 BOSTON RD, SUITE 14Billerica, MA 01821-3776

Mailing Address572 Boston Rd, Suite 14Billerica, MA 01821 · (781) 696-2070 · Fax (978) 294-8977

Phone(781) 696-2070

Fax(978) 294-8977

Sole ProprietorYes

Medical School CMSOtherGraduated 1978

Enumeration DateMay 26, 2006

Last NPPES UpdateMarch 4, 2015

✔ NPI 1306892898 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 MA · 2402

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.

572 BOSTON RD, Billerica, MA 01821

Open in Google Maps ↗

Other Identifiers 1

Medicare ID-Type UnspecifiedW02490MA · Provider Number

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield.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 Douglas Gammon Ph.d. 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 ID5698788420

PECOS Enrollment IDI20060724000016

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 01821 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

$189.86 typical visit price

range $63.72 – $189.86

Typical copayment $47.46 (range $15.93 – $47.46)

Most-billed visit code 99205

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

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 7

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

LAUREL T ASHCRAFT LMHC

Counselor (Mental Health)

572 BOSTON RD, SUITE 14
BILLERICA, MA 01821

Middlesex County (978) 330-5931

DR. DINA S GUYETSKY MD

Pediatrics

572 BOSTON RD
BILLERICA, MA 01821

Middlesex County (978) 667-7711

MS. CHRISTINE KENSICKI MSW

Social Worker (Clinical)

572 BOSTON RD, SUITE 24
BILLERICA, MA 01821

Middlesex County (781) 572-4550

LYONS DENTAL ASSOCIATES, D.M.D., PC

Dentist (General Practice)

572 BOSTON RD, SUITE ONE
BILLERICA, MA 01821

Middlesex County (978) 667-5807

LAWRENCE NEWMAN MD & PENELOPE HALL MD

Internal Medicine

572 BOSTON RD
BILLERICA, MA 01821

Middlesex County (978) 663-3410

ROBERT VITI PSY.D.

Psychologist (Clinical)

572 BOSTON RD, SUITE 14
BILLERICA, MA 01821

Middlesex County (978) 330-5150

BILLERICA COUNSELING CENTER

Psychologist (Clinical)

572 BOSTON RD, SUITE 14
BILLERICA, MA 01821

Middlesex County (781) 572-4550

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 Gammon's NPI number?

The NPI number for William Gammon is 1306892898. It was assigned to this individual provider in the NPPES registry on May 26, 2006.

Where is William Gammon located?

William Gammon practices at 572 Boston Rd Suite 14, Billerica, MA 01821. The listed phone number is (781) 696-2070.

What is William Gammon's specialty?

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

Is William Gammon enrolled in Medicare?

Yes. William Gammon 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 Gammon accept?

Health plans from Anthem Blue Cross and Blue Sheld and Anthem Blue Cross and Blue Shield list William Gammon 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 Gammon was last updated on March 4, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.