2026 NPPES data Prosthodontics NPI 1598755647 BS DDS MS
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NADER RASSOULI, BS DDS MS

Prosthodontics 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.
Prescribing volume
165
Medicare Part D claims · 52 beneficiaries · Prosthodontics avg: 85
What the federal data reveals: NADER RASSOULI, BS DDS MS is a Prosthodontics ([object Object]) practicing in PORTLAND, Oregon with a Medicare Part D prescribing footprint of 165 claims across 52 beneficiaries .

What stands out: NADER RASSOULI, BS DDS MS filed 165 Medicare Part D claims in 2023 across PORTLAND, Oregon. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

NADER RASSOULI, BS DDS MS at a glance

Quality data not reported

NPI registry status

Active

Issued 10/28/2005

NPI 1598755647

Primary specialty

Prosthodontics

Niche

3,510 US NPIs in this specialty

Medicare Part D claims

165 94% vs specialty avg

2023 prescription claims

Specialty avg: 85

Specialty distribution in Oregon

How Prosthodontics compares to other specialties among Oregon providers

Oregon providers

Prosthodontics share within Oregon

1. Prosthodontics42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Prosthodontics share within Oregon

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Prosthodontics) — 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).

NADER RASSOULI, BS DDS MS is a Prosthodontics provider practicing in PORTLAND, Oregon, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: BS DDS MS. NPI: 1598755647. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

NADER RASSOULI, BS DDS MS appears in the CMS NPPES registry as a Prosthodontics provider holding BS DDS MS credentials at 5440 SW WESTGATE DR, PORTLAND, OR, 97221, with a listed phone of (503) 297-4400. NPI 1598755647 was issued on 10/28/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RASSOULI 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 records for calendar year 2023 show 165 prescription claims written by this provider, covering 52 Medicare beneficiaries and totaling roughly $1K in drug spend, with an opioid prescribing rate of 18.2%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Prosthodontics is a narrow specialty nationwide, with 3,510 enrolled providers across 51 states and an average of 85 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

5440 SW WESTGATE DR
PORTLAND, OR 97221

Provider Details

NPI 1598755647
Specialty Prosthodontics
Credentials BS DDS MS
Gender Male
NPI Issued 10/28/2005

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

165
Total Claims
$1K
Total Drug Cost
52
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
167
Total Day Supply
2,103
Generic Drug Cost
$982
Opioid Claims
30 (18.2% rate)
Antibiotic Claims
61

Patient Demographics

Average Patient Age
77.1 years
Avg HCC Risk Score
1.11
Gender Split
62% female / 38% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Chlorhexidine Gluconate
59
Amoxicillin
52
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
25

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Prosthodontics Overview

How NADER RASSOULI, BS DDS MS fits within the Prosthodontics landscape nationally.

3,510
Prosthodontics Providers in US
51
States with Prosthodontics
85
Avg Claims per Provider

NADER RASSOULI, BS DDS MS's 165 claims are above the specialty average of 85.

Nearby Prosthodontics Providers in Oregon

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

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

Frequently Asked Questions

What is NADER RASSOULI, BS DDS MS's specialty?
NADER RASSOULI, BS DDS MS specializes in Prosthodontics and practices in PORTLAND, Oregon. Credentials: BS DDS MS.
How much does NADER RASSOULI, BS DDS MS prescribe under Medicare Part D?
In 2023, NADER RASSOULI, BS DDS MS wrote 165 Medicare Part D claims totaling $1K in drug costs for 52 beneficiaries.
Where is NADER RASSOULI, BS DDS MS located?
NADER RASSOULI, BS DDS MS is located at 5440 SW WESTGATE DR, PORTLAND, OR, 97221. Phone: (503) 297-4400.
What is NADER RASSOULI, BS DDS MS's NPI number?
NADER RASSOULI, BS DDS MS's National Provider Identifier (NPI) is 1598755647, issued on 10/28/2005.
Does NADER RASSOULI, BS DDS MS prescribe opioids?
Yes, NADER RASSOULI, BS DDS MS had 30 opioid claims in 2023 with an opioid prescribing rate of 18.2%.
How many Prosthodontics providers are there in the US?
There are 3,510 Prosthodontics providers across 51 states in the US. The average Prosthodontics provider writes 85 Medicare Part D claims per year.
What drugs does NADER RASSOULI, BS DDS MS prescribe most often?
Based on 2023 Medicare Part D data, NADER RASSOULI, BS DDS MS's most frequently prescribed drugs include Chlorhexidine Gluconate, Amoxicillin, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NADER RASSOULI, BS DDS MS accept Medicare?
NADER RASSOULI, BS DDS MS appears in CMS Medicare data with 165 Part D claims and 52 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NADER RASSOULI, BS DDS MS's credentials?
NADER RASSOULI, BS DDS MS's NPI is 1598755647 with credentials BS 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.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
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