IndividualActive
Petia Sierschynski
NPI 1164255170 · Mental Health Counselor · Lakewood, WA
Petia Sierschynski is a Mental Health Counselor provider in Lakewood, WA (NPI 1164255170).
Provider details
- NPI number
- 1164255170
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- MHCA.MC.61662933 (WA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(56/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
9116 Gravelly Lake Dr Sw Ste 107
Lakewood, WA 98499-3148
Phone: (253) 256-5415
Street-level locationGet directions
Mailing address
9116 Gravelly Lake Dr Sw Ste 107
Lakewood, WA 98499-3148
Registry dates
- Enumerated
- 2024-08-23
- Last updated
- 2026-01-15
- Certified
- 2026-01-15
Frequently asked questions
- What is Petia Sierschynski's NPI number?
- Petia Sierschynski's National Provider Identifier (NPI) is 1164255170, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Petia Sierschynski's specialty?
- Petia Sierschynski is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Petia Sierschynski located?
- Petia Sierschynski's practice location on file with NPPES is 9116 Gravelly Lake Dr Sw Ste 107, Lakewood, WA 98499-3148.
- What is Petia Sierschynski's phone number?
- The practice phone number listed in the NPPES registry for Petia Sierschynski is (253) 256-5415.
- Is Petia Sierschynski's NPI active?
- Yes — Petia Sierschynski's NPI (1164255170) is active in the NPPES registry as of the last update on 2026-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.