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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MRS. KATHERINE MASTELA LSW
NPI 1699284984
Social Worker in Countryside, IL

Active since September 29, 2017
9649 W 55TH ST, COUNTRYSIDE, IL 60525(708) 352-3580 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Sep 29, 2026, Jul 21, 2022 (2 updates tracked since 2022).

About Mrs. Katherine Mastela Lsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. KATHERINE MASTELA LSW (NPI 1699284984) is an individual social worker in Countryside, Illinois, licensed in Illinois (150000483) and active in the NPI registry since September 2017.

NPPES Registry Identity

NPI1699284984
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameMRS. KATHERINE MASTELACredential: LSW
Location Address9649 W 55TH STCountryside, IL 60525-3632
Mailing Address9649 W 55th StCountryside, IL 60525-3632 · (708) 352-3580
Phone(708) 352-3580
Sole ProprietorNo
Enumeration DateSeptember 29, 2017
Last NPPES UpdateSeptember 29, 20262 updates tracked since enumeration
✔ NPI 1699284984 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in IL · 150000483
Definition
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.
9649 W 55TH ST, Countryside, IL 60525
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Other Names 1

Former Name (1)Katherine Wilkens Lsw

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. ARCHIE RININTA RONAULI SOELAEMAN M.A. CF-SLP
Speech-Language Pathologist
9649 W 55TH ST
COUNTRYSIDE, IL 60525
Cook County (708) 352-3580
REBECCA LYNN KINST LPC, NCC
Counselor (Professional)
9649 W 55TH ST
COUNTRYSIDE, IL 60525
Cook County (708) 352-3580
MRS. NATALIE GRACE COCHRAN OTR
Occupational Therapist
9649 W 55TH ST
COUNTRYSIDE, IL 60525
Cook County (708) 352-3580
NATALIE C PONCE RN
Registered Nurse
9649 W 55TH ST
COUNTRYSIDE, IL 60525
Cook County (708) 352-3580
MARGARET MARY JOHNSON
Speech-Language Pathologist
9649 W 55TH ST
COUNTRYSIDE, IL 60525
Cook County (708) 352-3580
MS. ISABEL C SANTANA CFY
Speech-Language Pathologist
9649 W 55TH ST
COUNTRYSIDE, IL 60525
Cook County (708) 352-3580
REBECCA DAWN MISSIONI MOT OTRIL
Occupational Therapist
9649 W 55TH ST
COUNTRYSIDE, IL 60525
Cook County (708) 352-3580
ANGELA ZAINELLI OTR/L
Occupational Therapist
9649 W 55TH ST
COUNTRYSIDE, IL 60525
Cook County (708) 352-3580

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katherine Mastela's NPI number?

The NPI number for Katherine Mastela is 1699284984. It was assigned to this individual provider in the NPPES registry on September 29, 2017. The provider is also known as Katherine Wilkens Lsw.

Where is Katherine Mastela located?

Katherine Mastela practices at 9649 W 55th St, Countryside, IL 60525. The listed phone number is (708) 352-3580.

What is Katherine Mastela's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

When was this NPI record last updated?

The NPPES record for Katherine Mastela was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.