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Philip Zylstra, MD
NPI 1659335602 · Family Medicine Physician · Arlington, WA
Philip Zylstra, MD is a Family Medicine Physician provider in Arlington, WA (NPI 1659335602).
Provider details
- NPI number
- 1659335602
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD00027151 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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.
Practice location
3823 - 172nd St Ne
Cascade Skagit Health Alliance
Arlington, WA 98223
Phone: (360) 618-5000
Fax: (360) 659-9834
Street-level locationGet directions
Mailing address
1400 E. Kincaid St.
Mount Vernon, WA 98274-4127
Registry dates
- Enumerated
- 2006-04-14
- Last updated
- 2012-10-05
Frequently asked questions
- What is Philip Zylstra's NPI number?
- Philip Zylstra's National Provider Identifier (NPI) is 1659335602, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Philip Zylstra's specialty?
- Philip Zylstra is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Philip Zylstra located?
- Philip Zylstra's practice location on file with NPPES is 3823 - 172nd St Ne, Arlington, WA 98223.
- What is Philip Zylstra's phone number?
- The practice phone number listed in the NPPES registry for Philip Zylstra is (360) 618-5000.
- Is Philip Zylstra's NPI active?
- Yes — Philip Zylstra's NPI (1659335602) is active in the NPPES registry as of the last update on 2012-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.