Maryellen O'Brien, LMHC
NPI 1902284458 · Mental Health Counselor · Worcester, MA
Maryellen O'Brien, LMHC is a Mental Health Counselor provider in Worcester, MA (NPI 1902284458).
Provider details
- NPI number
- 1902284458
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LMHC
- Sex
- Female
- Sole proprietor
- No
- License
- 1196 (MA)
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
11 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
- 2015-05-15
- Last updated
- 2015-05-19
Frequently asked questions
- What is Maryellen O'Brien's NPI number?
- Maryellen O'Brien's National Provider Identifier (NPI) is 1902284458, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryellen O'Brien's specialty?
- Maryellen O'Brien is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Maryellen O'Brien located?
- Maryellen O'Brien's practice location on file with NPPES is 630 Plantation St, Worcester, MA 01605-2038.
- What is Maryellen O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Maryellen O'Brien is (508) 853-2854.
- Is Maryellen O'Brien's NPI active?
- Yes — Maryellen O'Brien's NPI (1902284458) is active in the NPPES registry as of the last update on 2015-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.