Marci Simon, LMHC
NPI 1023165941 · Mental Health Counselor · Lexington, MA
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marci Simon, LMHC is a Mental Health Counselor provider in Lexington, MA (NPI 1023165941).
Provider details
- NPI number
- 1023165941
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LMHC
- Sex
- Female
- Sole proprietor
- No
- License
- 5811 (MA)
Specialties & taxonomies
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
19 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
- 2007-01-04
- Last updated
- 2020-12-07
- Certified
- 2020-12-07
Frequently asked questions
- What is Marci Simon's NPI number?
- Marci Simon's National Provider Identifier (NPI) is 1023165941, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marci Simon's specialty?
- Marci Simon is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Marci Simon located?
- Marci Simon's practice location on file with NPPES is 789 Massachusetts Ave, Lexington, MA 02420-3915.
- What is Marci Simon's phone number?
- The practice phone number listed in the NPPES registry for Marci Simon is (617) 888-3060.
- Does Marci Simon accept Medicare?
- Marci Simon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marci Simon's NPI active?
- Yes — Marci Simon's NPI (1023165941) is active in the NPPES registry as of the last update on 2020-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.