Cathlyn Klassen, MD
NPI 1821157025 · Family Medicine Physician · Everett, WA
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cathlyn Klassen, MD is a Family Medicine Physician provider in Everett, WA (NPI 1821157025).
Provider details
- NPI number
- 1821157025
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00033057 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Risperidone | 28 |
| Famotidine | 23 |
| Divalproex Sodium | 22 |
| Levothyroxine Sodium | 18 |
| Ziprasidone Hcl | 18 |
| Fluoxetine Hcl | 16 |
| Furosemide | 15 |
| Omeprazole | 15 |
| Sertraline Hcl | 15 |
| Topiramate | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-06
- Last updated
- 2023-03-07
Frequently asked questions
- What is Cathlyn Klassen's NPI number?
- Cathlyn Klassen's National Provider Identifier (NPI) is 1821157025, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cathlyn Klassen's specialty?
- Cathlyn Klassen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cathlyn Klassen located?
- Cathlyn Klassen's practice location on file with NPPES is 12800 Bothell Everett Hwy, Everett, WA 98208-6642.
- What is Cathlyn Klassen's phone number?
- The practice phone number listed in the NPPES registry for Cathlyn Klassen is (425) 316-5180.
- Does Cathlyn Klassen accept Medicare?
- Cathlyn Klassen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cathlyn Klassen's NPI active?
- Yes — Cathlyn Klassen's NPI (1821157025) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.