Winnie Monohan , MS, CGC
Genetic Counselor, MS β’ Longview, WA
1615 Delaware St
Longview, WA 986322367
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
1615 Delaware St
Longview, WA 986322367
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Olympia, WA; Vancouver, WA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Genetic Counselor, MS: NPPES taxonomy is a reported classification, not proof of board certification.
NPI first issued
2025
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Compared with the same specialty in Longview and Washington
2 active clinicians are listed under Genetic Counselor, MS with a practice address in Longview, WA (223 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Sources: CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-08-26NUCC Taxonomy Code: 170300000X
A masters trained health care provider who collects and interprets genetic family histories; assesses the risk of disease occurrence or recurrence; identifies interventions to manage or ameliorate disease risk; educates about inheritance, testing, management, prevention, ethical issues, resources, and research; and counsels to promote informed choices and adaptation. Certification was established in 1993 by the American Board of Genetic Counseling and prior to that by the American Board of Medical Genetics. Requirements for experience, licensure, and job responsibilities vary among the states.
Secondary Practice Locations
2008 Caton Way Sw Ste A2
Olympia, WA 985022100
Phone: 8447436384
505 Ne 87th Ave
Vancouver, WA 986641989
Phone: 3605142550
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Radiology - Radiation Oncology
Doctor of Medicine (M.D.)
Internal Medicine - Medical Oncology
Doctor of Medicine (M.D.)
Internal Medicine - Medical Oncology
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Internal Medicine - Hematology
Doctor of Medicine (M.D.)
Internal Medicine - Hematology & Oncology
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1615 DELAWARE ST, LONGVIEW, WA 986322367 (Tel: 3604147878)
Additional practice office at 2008 Caton Way SW Ste A2, Olympia, WA 985022100
Additional practice office at 505 NE 87th Ave, Vancouver, WA 986641989
Genetic Counselor, MS (license number reported to NPPES: WA 70078113)
NPI status registered as active in NPPES database
Registered at 2008 CATON WAY SW STE A2, OLYMPIA, WA 985022100 (Tel: 8447436384)
Registered at PO BOX 2649, OLYMPIA, WA 985072649
Recorded as WINNIE MONOHAN, MS, CGC
Genetic Counselor, MS
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
Po Box 2649
Olympia, WA 985072649