NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mary Mayo

Addiction (Substance Use Disorder) Counselor in East Wareham, MA · enumerated 2011 · practices at Habit Opco.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1598045668

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mary Mayo
Sex Female
Practice address East Wareham, MA, 02538
Phone (508) 295-7990
Fax (508) 295-3781
Enumeration date Aug 22, 2011
Last updated in NPPES Jan 16, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers Secondary
101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Primary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary
101YP1600X Pastoral Counselor Behavioral Health & Social Service Providers Secondary
101YP2500X Professional Counselor Behavioral Health & Social Service Providers Secondary
102L00000X Psychoanalyst Behavioral Health & Social Service Providers Secondary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers Secondary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Mary Mayo?
Mary Mayo is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-16.