Fiona Williams
NPI 1861231516 · Marriage & Family Therapist · Philadelphia, PA
Fiona Williams is a Marriage & Family Therapist provider in Philadelphia, PA (NPI 1861231516).
Provider details
- NPI number
- 1861231516
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
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
2 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2024-05-22
- Last updated
- 2024-05-22
- Certified
- 2024-04-26
Frequently asked questions
- What is Fiona Williams's NPI number?
- Fiona Williams's National Provider Identifier (NPI) is 1861231516, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fiona Williams's specialty?
- Fiona Williams is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Fiona Williams located?
- Fiona Williams's practice location on file with NPPES is The Therapy Group, 1818 Rittenhouse Square, Philadelphia, PA 19103.
- What is Fiona Williams's phone number?
- The practice phone number listed in the NPPES registry for Fiona Williams is (267) 606-0485.
- Is Fiona Williams's NPI active?
- Yes — Fiona Williams's NPI (1861231516) is active in the NPPES registry as of the last update on 2024-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.