Lynn Underwood, MA, LCPC
NPI 1700353679 · Professional Counselor · O Fallon, IL
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lynn Underwood, MA, LCPC is a Professional Counselor provider in O Fallon, IL (NPI 1700353679).
Provider details
- NPI number
- 1700353679
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Credential
- MA, LCPC
- Sex
- Female
- Sole proprietor
- Yes
- License
- 180.011860 (IL)
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
7 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
- 2018-10-30
- Last updated
- 2025-11-17
- Certified
- 2025-11-17
Frequently asked questions
- What is Lynn Underwood's NPI number?
- Lynn Underwood's National Provider Identifier (NPI) is 1700353679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lynn Underwood's specialty?
- Lynn Underwood is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is Lynn Underwood located?
- Lynn Underwood's practice location on file with NPPES is 791 Wall St, O Fallon, IL 62269-2087.
- What is Lynn Underwood's phone number?
- The practice phone number listed in the NPPES registry for Lynn Underwood is (618) 514-1154.
- Does Lynn Underwood accept Medicare?
- Lynn Underwood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lynn Underwood's NPI active?
- Yes — Lynn Underwood's NPI (1700353679) is active in the NPPES registry as of the last update on 2025-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.