NPI registry status
Active
2026 NPPES data Addiction (Substance Use Disorder) Psychologist NPI 1548460637 PH.D.
Verify on CMS → Constance Pederson, PH.D.
Addiction (Substance Use Disorder) Psychologist in Portland, Oregon.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 969 in Addiction (Substance Use Disorder) Psychologist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
Constance Pederson, PH.D. is an Addiction (Substance Use Disorder) Psychologist in Portland, Oregon, listed in the federal CMS National Provider Identifier registry.
- #274
- Addiction (Substance Use Disorder) Psychologist rank among Oregon specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Constance Pederson, PH.D.
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1548460637), first enumerated 07/18/2007.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1548460637 · Addiction (Substance Use Disorder) Psychologist
NPI-10 · ENUM-MID · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1548460637
- ENUM-MID 2007
- TAX-NARROW 969
- RX-NONE No Part D
- BOOK-THIN 11 in Oregon
- PHOTO-ENUM Seda Gragossian, PHD · 2007
What does the federal data show about Constance Pederson, PH.D.?
Quality data not reportedPrimary specialty
Addiction (Substance Use Disorder) Psychologist
Specialty distribution in Oregon
How Addiction (Substance Use Disorder) Psychologist compares to other specialties among Oregon providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Addiction (Substance Use Disorder) Psychologist. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1548460637 |
|---|---|
| Specialty | Addiction (Substance Use Disorder) Psychologist |
| Credentials | PH.D. |
| Gender | Female |
| NPI Issued | 07/18/2007 |
Hospital and facility affiliations
Facilities where Constance Pederson, PH.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Chaise Group LLC
Portland, OR
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
More Addiction (Substance Use Disorder) Psychologist in OR →
All providers in Oregon →
Compare specialties →
Addiction (Substance Use Disorder) Psychologist Overview
How Constance Pederson, PH.D. fits within the Addiction (Substance Use Disorder) Psychologist landscape nationally.
969
Addiction (Substance Use Disorder) Psychologist Providers in US
50
States with Addiction (Substance Use Disorder) Psychologist
1,391
Avg Claims per Provider
Nationwide Addiction (Substance Use Disorder) Psychologist peers with similar MIPS or enrollment year
Two federal-record peer sets for Pederson, both outside Oregon so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Addiction (Substance Use Disorder) Psychologist Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Pederson.
One of 11 Addiction (Substance Use Disorder) Psychologist providers enrolled in Oregon, 5 are shown here.
Frequently Asked Questions
What is Constance Pederson, PH.D.'s specialty? ▼
Constance Pederson, PH.D. specializes in Addiction (Substance Use Disorder) Psychologist and practices in Portland, Oregon. Credentials: PH.D..
Where is Constance Pederson, PH.D. located? ▼
Constance Pederson, PH.D. is located at 3939 NE HANCOCK ST STE 301, Portland, OR, 97212. Phone: (503) 287-4426.
What is Constance Pederson, PH.D.'s NPI number? ▼
Constance Pederson, PH.D.'s National Provider Identifier (NPI) is 1548460637, issued on 07/18/2007.
How many Addiction (Substance Use Disorder) Psychologist providers are there in the US? ▼
There are 969 Addiction (Substance Use Disorder) Psychologist providers across 50 states in the US. The average Addiction (Substance Use Disorder) Psychologist provider writes 1,391 Medicare Part D claims per year.
Does Constance Pederson, PH.D. accept Medicare? ▼
Constance Pederson, PH.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Constance Pederson, PH.D.'s credentials? ▼
Constance Pederson, PH.D.'s NPI is 1548460637 with credentials PH.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.