Physician Profile
Unclaimed ProfileAbout GAMMON
William Douglas Gammon, PhD is a clinical psychologist practising in Billerica, MA. William is also listed as specialising in psychologist — clinical.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Gammon's specialty?
Dr. Gammon is a clinical psychologist in Billerica, MA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CLINICAL PSYCHOLOGIST”.
NPI registry
Where can I find Dr. Gammon?
Dr. Gammon is listed at 572 BOSTON RD SUITE 14, Billerica, MA 01821. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Gammon?
The number on file is (781) 696-2070. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Gammon's NPI number?
Dr. Gammon's National Provider Identifier is 1306892898. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Gammon's medical education?
Dr. Gammon attended Other, graduating in 1978. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Gammon been practising?
Dr. Gammon has 48 years experience. Calculated from a graduation year of 1978, reported in the CMS National Downloadable File.
CMS public data
Has Dr. Gammon confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Gammon. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (781) 696-2070
- Email not available
Practice Locations
572 BOSTON RD SUITE 14
Billerica, MA 01821
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 1978 at Other 8
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.