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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.

REBECCA K SIKES-GREENWOOD CSAC
NPI 1619503091
Counselor - Addiction (Substance Use Disorder) in Milwaukee, WI

Active since March 18, 2020
4650 S HOWELL AVE, MILWAUKEE, WI 53207(414) 376-5577 Get Directions Write a Review

NPPES record last updated: June 28, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Rebecca K Sikes-greenwood Csac NPPES

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

REBECCA K SIKES-GREENWOOD CSAC (NPI 1619503091) is an individual addiction (substance use disorder) provider in Milwaukee, Wisconsin, licensed in Wisconsin (15929-132) and active in the NPI registry since March 2020.

NPPES Registry Identity

NPI1619503091
Entity TypeIndividualFemale
Primary Taxonomy101YA0400X
Provider Legal NameREBECCA K SIKES-GREENWOODCredential: CSAC
Location Address4650 S HOWELL AVEMilwaukee, WI 53207-5908
Mailing Address2756 Fond Du Lac RdOshkosh, WI 54902-7247 · (920) 292-0365
Phone(414) 376-5577
Sole ProprietorNo
Enumeration DateMarch 18, 2020
Last NPPES UpdateJune 28, 2026
NPPES CertifiedMarch 18, 2020
✔ NPI 1619503091 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
License✔ Licensed in WI · 15929-132
4650 S HOWELL AVE, Milwaukee, WI 53207
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource (Common Ground Healthcare), Network Health.Insurance ›

Other Providers at the Same Location NPPES 9

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

HORIZON HEALTHCARE, INC
Clinic/Center (Multi-Specialty)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
MARK C BENDER P.A.
Physician Assistant
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
AMERICAN TELEPSYCHIATRY, INC.
General Practice
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 301-6381
MELINDA A BLAKE APSW
Social Worker (Clinical)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
DENISE M HARRIS PC
Counselor (Professional)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
NAMAZII U BROOKS
Social Worker (Clinical)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
KIMBERLY RAKHA APNP
Nurse Practitioner (Family)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
REBECCA RAHN PC
Counselor (Professional)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577

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 Rebecca Sikes-greenwood's NPI number?

The NPI number for Rebecca Sikes-greenwood is 1619503091. It was assigned to this individual provider in the NPPES registry on March 18, 2020.

Where is Rebecca Sikes-greenwood located?

Rebecca Sikes-greenwood practices at 4650 S Howell Ave, Milwaukee, WI 53207. The listed phone number is (414) 376-5577.

What is Rebecca Sikes-greenwood's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

What insurance does Rebecca Sikes-greenwood accept?

Health plans from CareSource (Common Ground Healthcare) and Network Health list Rebecca Sikes-greenwood as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Rebecca Sikes-greenwood was last updated on June 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 49 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.