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PETIA SIERSCHYNSKI
NPI 1164255170
Counselor - Mental Health in Lakewood, WA

Active since August 23, 2024
9116 GRAVELLY LAKE DR SW STE 107, LAKEWOOD, WA 98499(253) 256-5415 Get Directions Write a Review

NPPES record last updated: January 15, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 15, 2026, Aug 23, 2024 (2 updates tracked since 2024).

About Petia Sierschynski NPPES

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

PETIA SIERSCHYNSKI (NPI 1164255170) is an individual mental health provider in Lakewood, Washington, licensed in Washington (MHCA.MC.61662933) and active in the NPI registry since August 2024.

NPPES Registry Identity

NPI1164255170
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NamePETIA SIERSCHYNSKI
Location Address9116 GRAVELLY LAKE DR SW STE 107Lakewood, WA 98499-3148
Mailing Address9116 Gravelly Lake Dr Sw Ste 107Lakewood, WA 98499-3148 · (253) 256-5415
Phone(253) 256-5415
Sole ProprietorNo
Enumeration DateAugust 23, 2024
Last NPPES UpdateJanuary 15, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 15, 2026
✔ NPI 1164255170 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in WA · MHCA.MC.61662933
9116 GRAVELLY LAKE DR SW STE 107, Lakewood, WA 98499
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Other Providers at the Same Location NPPES 5

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

BRITT KELLY COUNSELING, PLLC
Social Worker (Clinical)
9116 GRAVELLY LAKE DR SW STE 107
LAKEWOOD, WA 98499
Pierce County (253) 342-3558
SE HEE MIN
Nurse Practitioner (Psychiatric/Mental Health)
9116 GRAVELLY LAKE DR SW STE 107
LAKEWOOD, WA 98499
Pierce County (253) 581-6106
KEYNA GRAHAM-HEINE, PLLC
Nurse Practitioner (Psychiatric/Mental Health)
9116 GRAVELLY LAKE DR SW STE 107
LAKEWOOD, WA 98499
Pierce County (253) 364-6054
WORKIT HEALTH MI PLLC
General Practice
9116 GRAVELLY LAKE DR SW STE 107, #3, PMB 1963
LAKEWOOD, WA 98499
Pierce County (360) 436-6594
KEYNA GRAHAM-HEINE ARNP
Nurse Practitioner (Psychiatric/Mental Health)
9116 GRAVELLY LAKE DR SW STE 107
LAKEWOOD, WA 98499
Pierce County (253) 364-6054

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 Petia Sierschynski's NPI number?

The NPI number for Petia Sierschynski is 1164255170. It was assigned to this individual provider in the NPPES registry on August 23, 2024.

Where is Petia Sierschynski located?

Petia Sierschynski practices at 9116 Gravelly Lake Dr SW Ste 107, Lakewood, WA 98499. The listed phone number is (253) 256-5415.

What is Petia Sierschynski's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Petia Sierschynski was last updated on January 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.