2026 NPPES data Dentist NPI 1508837071 DDS, MS
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JAMES RAPSON, DDS, MS

Dentist in PORTLAND, Oregon. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.

What the federal data shows

JAMES RAPSON, DDS, MS is a Dentist in PORTLAND, Oregon, listed in the federal CMS National Provider Identifier registry.

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.

What does the federal data show about JAMES RAPSON, DDS, MS?

Quality data not reported

NPI registry status

Active

Issued 01/31/2006

NPI 1508837071

Primary specialty

Dentist

High-volume

93,789 US NPIs in this specialty

Specialty distribution in Oregon

How Dentist compares to other specialties among Oregon providers

Oregon providers

Dentist share within Oregon

1. Dentist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Dentist share within Oregon

Specialty board-certification context

Estimated specialty board-certified rate — Dentist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Dentist ABMS/AOA estimate

Est. board-certified rate (Dentist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Dentist) — ABMS / AOA estimate

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).

JAMES RAPSON, DDS, MS appears in the CMS NPPES registry as a Dentist provider holding DDS, MS credentials at 3600 N INTERSTATE AVE, PORTLAND, OR, 97227, with a listed phone of (503) 939-7420. NPI 1508837071 was issued on 01/31/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RAPSON most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Dentist providers operate outside Part D entirely.

Dentist is a high-volume specialty nationwide, with 93,789 enrolled providers across 56 states and an average of 87 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

3600 N INTERSTATE AVE
PORTLAND, OR 97227

Provider Details

NPI 1508837071
Specialty Dentist
Credentials DDS, MS
Gender Male
NPI Issued 01/31/2006

Hospital and facility affiliations

Facilities where JAMES RAPSON, DDS, MS 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.

KAISER FOUNDATION HEALTH PLAN OF THE NORTHWEST
CLACKAMAS, 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).

Dentist Overview

How JAMES RAPSON, DDS, MS fits within the Dentist landscape nationally.

93,789
Dentist Providers in US
56
States with Dentist
87
Avg Claims per Provider

Nearby Dentist Providers in Oregon

Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as RAPSON.

Compare Dentist nationally: see state-by-state distribution →

Frequently Asked Questions

What is JAMES RAPSON, DDS, MS's specialty?
JAMES RAPSON, DDS, MS specializes in Dentist and practices in PORTLAND, Oregon. Credentials: DDS, MS.
Where is JAMES RAPSON, DDS, MS located?
JAMES RAPSON, DDS, MS is located at 3600 N INTERSTATE AVE, PORTLAND, OR, 97227. Phone: (503) 939-7420.
What is JAMES RAPSON, DDS, MS's NPI number?
JAMES RAPSON, DDS, MS's National Provider Identifier (NPI) is 1508837071, issued on 01/31/2006.
How many Dentist providers are there in the US?
There are 93,789 Dentist providers across 56 states in the US. The average Dentist provider writes 87 Medicare Part D claims per year.
Does JAMES RAPSON, DDS, MS accept Medicare?
JAMES RAPSON, DDS, MS appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JAMES RAPSON, DDS, MS's credentials?
JAMES RAPSON, DDS, MS's NPI is 1508837071 with credentials DDS, MS. 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

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 April 2026 (NPPES) / 2023 (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