William Thomas Meristem, BA, QMHA
NPI 1548602774 · Addiction (Substance Use Disorder) Counselor · Portland, OR
William Thomas Meristem, BA, QMHA is a Addiction (Substance Use Disorder) Counselor provider in Portland, OR (NPI 1548602774).
Provider details
- NPI number
- 1548602774
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- BA, QMHA
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
83% 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
Mailing address
Registry dates
- Enumerated
- 2013-07-30
- Last updated
- 2014-10-28
Frequently asked questions
- What is William Thomas Meristem's NPI number?
- William Thomas Meristem's National Provider Identifier (NPI) is 1548602774, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Thomas Meristem's specialty?
- William Thomas Meristem is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is William Thomas Meristem located?
- William Thomas Meristem's practice location on file with NPPES is De Paul Treatment Centers, Portland, OR 97208-3007.
- What is William Thomas Meristem's phone number?
- The practice phone number listed in the NPPES registry for William Thomas Meristem is (503) 535-1150.
- Is William Thomas Meristem's NPI active?
- Yes — William Thomas Meristem's NPI (1548602774) is active in the NPPES registry as of the last update on 2014-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.