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Dr. Steffen Niels Lassen , DDS

Dentist - General Practice • Eugene, OR

Active NPI 1750811485 Individual Practitioner Male Practitioner
Practice location in NPPES

4120 Quest Dr
Eugene, OR 974028768

Call 5416887278 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

4120 Quest Dr

Eugene, OR 974028768

Telephone 5416887278
Fax 5413346604
Organization at the Same NPPES Address or Phone
Dr. Henry Quest D.m.d. Pc Facility NPI 1740320464

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

30-day fills

39 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$139 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $12.14 in 2024

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2024.

Guide: How to read an Open Payments record

NPI first issued

2017

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Lassen has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Lassen as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Eugene and Oregon

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

More Part D prescriptions than 60% of clinicians listed under Dentist - General Practice in Eugene, OR (2024, 57 clinicians with data). Median for this group: 30. Middle half: 19 to 53.

Close to the middle for clinicians listed under Dentist - General Practice in Oregon (2024, 860 clinicians with data). Median for this group: 35. Middle half: 18 to 65.

Part D drug cost

Close to the middle for clinicians listed under Dentist - General Practice in Eugene, OR (2024, 57 clinicians with data). Median for this group: $120. Middle half: $66 to $230.

Close to the middle for clinicians listed under Dentist - General Practice in Oregon (2024, 860 clinicians with data). Median for this group: $146. Middle half: $69 to $289.

108 active clinicians are listed under Dentist - General Practice with a practice address in Eugene, OR (1,894 in Oregon).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Eugene

0% of these 108 clinicians have the CMS telehealth indicator.

0% of these 108 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2024
Disclosure Year:

Program year 2024 (payments made January 1 – December 31, 2024): fewer than 11 records totaling $12.14.

Manufacturer Payment Nature Product Type Amount ($)
Align Technology, Inc.
Food and Beverage
Cash or cash equivalent
Invisalign General $12.14

Source: CMS Open Payments, program year 2024, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Amoxicillin Amoxicillin 28 129 $74.50 22
Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen 11 30 $64.57 —

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Dentist - General Practice Primary Specialty

NUCC Taxonomy Code: 1223G0001X

License # reported to NPPES OR D10980

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

Dentist

NUCC Taxonomy Code: 122300000X

License # reported to NPPES CA 101423

A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Oregon Medical Board.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

ORDER AND REFERRING ONLY - DENTIST

Medicare Enrollment ID

I20190318002034

Enrollment State Jurisdiction

OR

PECOS Control ID

5395085971

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Not Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

3 listed
Dr. Tyler Peterschmidt , DMD

Dentist - General Practice

NPI 1871901371

Doctor of Dental Medicine

NPI 1225709728
Dr. Kenneth Shou , DDS

Dentist - General Practice

NPI 1972646586

Doctor of Dental Surgery

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

8 Historical Events
📍
Updated Practice Location March 19, 2019

Registered at 4120 QUEST DR, EUGENE, OR 974028768 (Tel: 5416887278)

📍
Updated Business Mailing Address March 19, 2019

Registered at 4120 QUEST DR, EUGENE, OR 974028768 (Tel: 5416887278)

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NPI Profile Active June 15, 2017

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) June 15, 2017

Registered at 550 E WASHINGTON BLVD, CRESCENT CITY, CA 955318160 (Tel: 7074654636)

📍
Business Mailing Address (Initial Record) June 15, 2017

Registered at 550 E WASHINGTON BLVD, CRESCENT CITY, CA 955318160

👤
Provider Name / Credentials (Initial Record) June 15, 2017

Recorded as STEFFEN LASSEN, DDS

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 15, 2017

Dentist (license number reported to NPPES: CA 101423)

🟢
Initial NPI Registration & Enumeration June 15, 2017

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1750811485
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 15, 2017
Last Update: March 19, 2019
Sole Proprietor: No

Other Dentist - General Practices in Eugene

All Dentist - General Practices in Eugene

Mailing Address

4120 Quest Dr

Eugene, OR 974028768

Phone: 5416887278

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.