Dr. William Douglas Gammon
PH.D. | Clinical Psychologist | 47+ years Exp
572 Boston Rd, Suite 14, Billerica
Massachusetts, 01821-3776
781-696-2070 978-294-8977
Maps & DirectionsDr. William Douglas Gammon is a Billerica, Massachusetts based psychologist with 47 years of experience in Clinical Psychology. He completed his graduation in 1978. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. William Douglas Gammon is 2402 for Clinical Psychology in Massachusetts. His current practice location is 572 Boston Rd, Suite 14, Billerica. Patients can reach him at 781-696-2070 or can fax him at 978-294-8977. Dr. William Douglas Gammon is PH.D. in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1306892898.
Dr. William Douglas Gammon is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.
Complete Profile:
Dr. William Douglas Gammon speciality, credentials, practice address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
| Name: | Dr. William Douglas Gammon |
| Specialization: | Clinical Psychology |
| Gender: | Male |
| Credentials: | PH.D. |
| Experience: | 47+ years |
| Medical School Attended: | Other |
| Graduation Year: | 1978 |
| Accepts Medicare Assignment: | Yes |
| Practice Address: | 572 Boston Rd, Suite 14, Billerica,
Massachusetts, 01821-3776 |
| Phone: | 781-696-2070 |
| Fax: | 978-294-8977 |
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details are as mentioned below.
| PAC ID: | 5698788420 |
| Enrollment ID: | I20060724000016 |
| NPI Number: | 1306892898 |
| NPI Enumeration Date: | 26 May, 2006 |
| NPI Last Update On: | 04 Mar, 2015 |
Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Dr. William Douglas Gammon are as mentioned below.
| License Number | Specialization | State | Status | |
| 2402 | Clinical Psychology | Massachusetts | Primary | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | Dr. William Douglas Gammon
572 Boston Rd, Suite 14
Billerica, Massachusetts |
| Zip: | 01821 |
| Phone Number: | 781-696-2070 |
| Fax Number: | 978-294-8977 |
Patients can reach Dr. William Douglas Gammon at
572 Boston Rd, Suite 14, Billerica, Massachusetts or can
call to book an appointment on 781-696-2070.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.