Mary Williams, LCPC
NPI 1639336456 · Professional Counselor · Cumberland, MD
Mary Williams, LCPC is a Professional Counselor provider in Cumberland, MD (NPI 1639336456).
Provider details
- NPI number
- 1639336456
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Credential
- LCPC
- Sex
- Female
- Sole proprietor
- Yes
- License
- LC0135 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-20
- Last updated
- 2008-05-20
Frequently asked questions
- What is Mary Williams's NPI number?
- Mary Williams's National Provider Identifier (NPI) is 1639336456, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Williams's specialty?
- Mary Williams is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is Mary Williams located?
- Mary Williams's practice location on file with NPPES is 32 Oak St, Cumberland, MD 21502.
- What is Mary Williams's phone number?
- The practice phone number listed in the NPPES registry for Mary Williams is (301) 724-9171.
- Is Mary Williams's NPI active?
- Yes — Mary Williams's NPI (1639336456) is active in the NPPES registry as of the last update on 2008-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.