Tammy Nicholson, LCMHC
NPI 1891088274 · Mental Health Counselor · Portsmouth, NH
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Nicholson, LCMHC is a Mental Health Counselor provider in Portsmouth, NH (NPI 1891088274).
Provider details
- NPI number
- 1891088274
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LCMHC
- Sex
- Female
- Sole proprietor
- No
- License
- 8421 (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
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 76 Winter StHaverhill, MA 01830-5760Phone: (978) 373-1181
- 16 Fifth StDover, NH 03820-2930Phone: (603) 883-0005
Registry dates
- Enumerated
- 2011-05-18
- Last updated
- 2025-12-29
- Certified
- 2025-12-29
Frequently asked questions
- What is Tammy Nicholson's NPI number?
- Tammy Nicholson's National Provider Identifier (NPI) is 1891088274, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Nicholson's specialty?
- Tammy Nicholson is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Tammy Nicholson located?
- Tammy Nicholson's practice location on file with NPPES is 100 Eileen Dondero Foley Ave Ste 302, Portsmouth, NH 03801-4597.
- What is Tammy Nicholson's phone number?
- The practice phone number listed in the NPPES registry for Tammy Nicholson is (603) 883-0005.
- Does Tammy Nicholson accept Medicare?
- Tammy Nicholson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Nicholson's NPI active?
- Yes — Tammy Nicholson's NPI (1891088274) is active in the NPPES registry as of the last update on 2025-12-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.