Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John Westerfield, MD

Individual provider Anesthesiology Physician · NPI 1609850197

John Westerfield, MD practises Anesthesiology in Longview, Washington. Qualified in 1991, 35 years ago. Practices with Peacehealth, a 187-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
35
Licensed in
WA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1615 Delaware St Anesthesia Dept
Longview, WA 98632-2310 Not confirmed with CMS for 18 years — call before visiting
Phone: (360) 414-2048
Fax: (360) 575-6749
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD00037635 (WA)

Record details

NPI number1609850197
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 30, 2005
Last updated in NPPESJanuary 30, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Peacehealth — 187 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients70
Services billed 92 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Peacehealth

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 187 clinicians in the practice; 12 are shown here.

Other providers in Longview