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Deactivated NPI 1366776791 Deactivated / Inactive NPI Female Practitioner

Alison Elizabeth Masters , MSW

Social Worker • Dixon, IL

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Notice of NPI Deactivation & Inactive Practice Status

According to official public domain records published by CMS (Centers for Medicare & Medicaid Services) in the National Provider Identifier (NPPES) Registry, Alison Masters has officially deactivated this NPI record and ceased active healthcare practice.

Registration / Start Date October 02, 2009
NPI Deactivation Date January 29, 2026
Total Practice Duration ~17 Years of Practice (2009 – 2026)

Professional Overview & Biography Verified Profile Summary

Alison Masters, MSW was a registered Social Worker practicing in Dixon, IL. Throughout an active medical career spanning 17 years, Alison Masters provided care at the practice location at 325 IL ROUTE 2 until profile deactivation on 2026-01-29.

Practice Location & Contact Primary Location

Practice Address

325 Il Route 2

Dixon, IL 610219118

Telephone 8152846611
Associated Practice Facility / Clinic
🏢 Sinnissippi Centers, Inc. Facility NPI 1922114115

Specialty Benchmarks & Practice Insights

Comparative analytics for Social Worker in Dixon, IL

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 8.6 Yrs
State Avg: 13.0 Yrs
Regional Practice Density
47 Specialists

Practicing in Dixon, IL (5960 Statewide)

Telehealth Adoption Rate
4.3% 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

Social Worker Primary Specialty

NUCC Taxonomy Code: 104100000X

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

40 Associated Practitioners
Wendy Wiersema , LPN

Licensed Practical Nurse

NPI 1003363482

Licensed Practical Nurse

Rae Metzler8

Counselor - Mental Health

NPI 1003416520
Madison Wallace , MHP

Counselor - Mental Health

NPI 1003622937

Mental Health Practitioner

Leigh Terrell , LCPC

Counselor - Mental Health

NPI 1013057868

Licensed Clinical Professional Counselor

NPI 1013567973
Michael Swiech

Counselor - Mental Health

NPI 1013684364

Career & Practice History Timeline

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

7 Historical Events
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NPI Profile Deactivated January 29, 2026

Record deactivated on January 29, 2026

NPI Profile Active October 08, 2009

NPI status registered as active in NPPES database

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Updated Practice Location October 08, 2009

Registered at 325 IL ROUTE 2, DIXON, IL 610219118 (Tel: 8152846611)

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Updated Business Mailing Address October 08, 2009

Registered at 810 HEMLOCK AVE, DIXON, IL 610213850 (Tel: 8154405226)

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Provider Name / Credentials Updated October 08, 2009

Recorded as ALISON MASTERS, MSW

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Medical Taxonomy / Specialty Registered (Primary Specialty) October 08, 2009

Social Worker

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Initial NPI Registration & Enumeration October 02, 2009

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: 1366776791
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: October 02, 2009
Last Update: October 08, 2009
Deactivation Date: January 29, 2026

Mailing Address

810 Hemlock Ave

Dixon, IL 610213850

Phone: 8154405226

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.