IndividualActive
Natasja Haffner, LMSW
NPI 1639014236 · Social Worker · Fenton, MO
Natasja Haffner, LMSW is a Social Worker provider in Fenton, MO (NPI 1639014236).
Provider details
- NPI number
- 1639014236
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Female
- Sole proprietor
- No
- License
- 2026007525 (MO)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(53/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
1345 Smizer Mill Rd
Fenton, MO 63026-7305
Phone: (636) 496-4030
Street-level locationGet directions
Mailing address
2606 Louisiana Ave Apt 2n
Saint Louis, MO 63118-1115
Registry dates
- Enumerated
- 2026-04-21
- Last updated
- 2026-04-21
- Certified
- 2026-04-21
Frequently asked questions
- What is Natasja Haffner's NPI number?
- Natasja Haffner's National Provider Identifier (NPI) is 1639014236, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Natasja Haffner's specialty?
- Natasja Haffner is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Natasja Haffner located?
- Natasja Haffner's practice location on file with NPPES is 1345 Smizer Mill Rd, Fenton, MO 63026-7305.
- What is Natasja Haffner's phone number?
- The practice phone number listed in the NPPES registry for Natasja Haffner is (636) 496-4030.
- Is Natasja Haffner's NPI active?
- Yes — Natasja Haffner's NPI (1639014236) is active in the NPPES registry as of the last update on 2026-04-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.