Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1639014236 Individual Practitioner Female Practitioner

Natasja Haffner , LMSW

Social Worker • Fenton, MO

Professional Overview & Biography Verified Profile Summary

Natasja Haffner, LMSW is a registered healthcare professional specializing in Social Worker in Fenton, MO. Practice services are available at 1345 SMIZER MILL RD under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

1345 Smizer Mill Rd

Fenton, MO 630267305

Telephone 6364964030

Specialty Benchmarks & Practice Insights

Comparative analytics for Social Worker in Fenton, MO

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 10.5 Yrs
State Avg: 14.5 Yrs
Regional Practice Density
6 Specialists

Practicing in Fenton, MO (1936 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2026-04-21
Social Worker Primary Specialty

NUCC Taxonomy Code: 104100000X

State License MO 2026007525

A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

1 Associated Practitioners
NPI 1396216115

Licensed Master Social Worker

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events
NPI Profile Active April 21, 2026

NPI status registered as active in NPPES database

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Updated Practice Location April 21, 2026

Registered at 1345 SMIZER MILL RD, FENTON, MO 630267305 (Tel: 6364964030)

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Updated Business Mailing Address April 21, 2026

Registered at 2606 LOUISIANA AVE APT 2N, SAINT LOUIS, MO 631181115

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Provider Name / Credentials Updated April 21, 2026

Recorded as NATASJA HAFFNER, LMSW

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Medical Taxonomy / Specialty Registered (Primary Specialty) April 21, 2026

Social Worker (License #2026007525 in MO)

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Initial NPI Registration & Enumeration April 21, 2026

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1639014236
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: April 21, 2026
Last Update: April 21, 2026
Sole Proprietor: No

Mailing Address

2606 Louisiana Ave Apt 2n

Saint Louis, MO 631181115

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.