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

Dr. John Clayton, DO

Individual provider Surgery Physician · NPI 1770793762

Dr. John Clayton, DO practises General Surgery in Shelton, Washington. Graduated from Kansas City College of Medicine and Surgery in 2006, 20 years ago. Practices with Public Hospital District No 1 of Mason County, a 57-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
20
Trained at
Kansas City College of Medicine and Surgery
Licensed in
WA
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1701 N 13th St
Shelton, WA 98584-2077
Phone: (360) 426-2653
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence OP60220433 (WA)

Record details

NPI number1770793762
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 22, 2007
Last updated in NPPESFebruary 3, 2021
Certification dateFebruary 3, 2021

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolKANSAS CITY COLLEGE OF MEDICINE AND SURGERY
Graduated 2006 (20 years in practice)
Group practice Public Hospital District No 1 Of Mason County — 57 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients20
Services billed 37 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

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 Public Hospital District No 1 of Mason County

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 57 clinicians in the practice; 12 are shown here.

Other providers in Shelton