William Frederick, MA
NPI 1851561393 · Marriage & Family Therapist · Clemson, SC
William Frederick, MA is a Marriage & Family Therapist provider in Clemson, SC (NPI 1851561393).
Provider details
- NPI number
- 1851561393
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MA
- Sex
- Male
- Sole proprietor
- Yes
- License
- MFC 30357 (CA)
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
18 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
- 2008-03-11
- Last updated
- 2014-02-04
Frequently asked questions
- What is William Frederick's NPI number?
- William Frederick's National Provider Identifier (NPI) is 1851561393, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Frederick's specialty?
- William Frederick is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is William Frederick located?
- William Frederick's practice location on file with NPPES is 214 Keowee Trl, Clemson, SC 29631-1448.
- What is William Frederick's phone number?
- The practice phone number listed in the NPPES registry for William Frederick is (864) 367-9023.
- Is William Frederick's NPI active?
- Yes — William Frederick's NPI (1851561393) is active in the NPPES registry as of the last update on 2014-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.