William Letterman, MSW, LCSW
NPI 1578577193 · Clinical Social Worker · Farmington, MO
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Letterman, MSW, LCSW is a Clinical Social Worker provider in Farmington, MO (NPI 1578577193).
Provider details
- NPI number
- 1578577193
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, LCSW
- Sex
- Male
- Sole proprietor
- No
- License
- 2002031993 (MO)
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
- 2006-07-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Letterman's NPI number?
- William Letterman's National Provider Identifier (NPI) is 1578577193, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Letterman's specialty?
- William Letterman is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Letterman located?
- William Letterman's practice location on file with NPPES is 1085 Maple St., Farmington, MO 63640.
- What is William Letterman's phone number?
- The practice phone number listed in the NPPES registry for William Letterman is (573) 756-5353.
- Does William Letterman accept Medicare?
- William Letterman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Letterman's NPI active?
- Yes — William Letterman's NPI (1578577193) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.