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DR. STEPHEN B. KNOFF DDS
NPI 1043309164
Dentist - Oral and Maxillofacial Pathology in Kirkland, WA

Active since October 12, 2006Opted out of Medicare · through Nov 8, 2027
12330 120TH AVE NE, KIRKLAND, WA 98034(425) 821-7979(425) 821-0500 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Stephen B. Knoff Dds NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. STEPHEN B. KNOFF DDS (NPI 1043309164) is an individual oral and maxillofacial pathology provider in Kirkland, Washington, licensed in Washington (6821) and active in the NPI registry since October 2006. He has opted out of Medicare through November 8, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1043309164
Entity TypeIndividualMale
Primary Taxonomy1223P0106X
Provider Legal NameDR. STEPHEN B. KNOFFCredential: DDS
Location Address12330 120TH AVE NEKirkland, WA 98034-6926
Mailing Address12330 120th Ave NeKirkland, WA 98034-6926 · (425) 821-7979 · Fax (425) 821-0500
Phone(425) 821-7979
Fax(425) 821-0500
Sole ProprietorNo
Enumeration DateOctober 12, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1043309164 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Oral and Maxillofacial PathologyDental Providers
Taxonomy Code1223P0106X
License✔ Licensed in WA · 6821
Definition
The specialty of dentistry and discipline of pathology that deals with the nature, identification, and management of diseases affecting the oral and maxillofacial regions. It is a science that investigates the causes, processes, and effects of these diseases. The practice of oral and maxillofacial pathology includes research and diagnosis of diseases using clinical, radiographic, microscopic, biochemical, or other examinations.
12330 120TH AVE NE, Kirkland, WA 98034
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Other Identifiers 1

Medicare UPINU44162WA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Stephen B. Knoff Dds has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from November 8, 2017 through November 8, 2027.

Opt-Out Effective DateNovember 8, 2017
Opt-Out In Effect ThroughNovember 8, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98034 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.43 typical visit price
range $63.67 – $189.37
Typical copayment $24.35 (range $15.91 – $47.34)
Most-billed visit code 99203
Established Patient
$78.74 typical visit price
range $21.12 – $155.00
Typical copayment $19.68 (range $5.28 – $38.75)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ERICH BRENT NAUMANN DMD
Dentist (Oral and Maxillofacial Surgery)
12330 120TH AVE NE
KIRKLAND, WA 98034
King County (425) 821-7979
DR. ADAM C. FETTIG DMD
Dentist (Oral and Maxillofacial Pathology)
12330 120TH AVE NE
KIRKLAND, WA 98034
King County (425) 821-7979
KNOFF & FETTIG, PS
Dentist (Oral and Maxillofacial Pathology)
12330 120TH AVE NE
KIRKLAND, WA 98034
King County (425) 821-7979
KAREN ZEMPLENYI DDS, MD
Dentist (Oral and Maxillofacial Surgery)
12330 120TH AVE NE
KIRKLAND, WA 98034
King County (425) 821-7979

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Stephen Knoff's NPI number?

The NPI number for Stephen Knoff is 1043309164. It was assigned to this individual provider in the NPPES registry on October 12, 2006.

Where is Stephen Knoff located?

Stephen Knoff practices at 12330 120th Ave NE, Kirkland, WA 98034. The listed phone number is (425) 821-7979.

What is Stephen Knoff's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Pathology, with taxonomy code 1223P0106X.

Is Stephen Knoff enrolled in Medicare?

No. Stephen Knoff has opted out of Medicare through November 8, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Stephen Knoff was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.