Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1922149574 Individual Practitioner Male Practitioner

Dr. William Carl Marson , DC

Chiropractor - Orthopedic • Lynnwood, WA

Professional Overview & Biography Verified Profile Summary

Dr. William Marson, DC is a registered healthcare professional specializing in Chiropractor - Orthopedic in Lynnwood, WA. Practice services are available at 4300 198TH ST SW STE 300 under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

4300 198th St Sw Ste 300

Lynnwood, WA 980366771

Telephone 4253611122
Fax 2063241178
Associated Practice Facility / Clinic

Specialty Benchmarks & Practice Insights

Comparative analytics for Chiropractor - Orthopedic in Lynnwood, WA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 10.5 Yrs
State Avg: 36.3 Yrs
Regional Practice Density
1 Specialists

Practicing in Lynnwood, WA (35 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2026-03-30
Chiropractor - Orthopedic Primary Specialty

NUCC Taxonomy Code: 111NX0800X

State License WA CH00003099

Chiropractic Orthopedics is defined as that branch of chiropractic medicine that includes the continued acquisition of knowledge relative to both normal functions and diseases of the human body as they relate to the bones, joints, capsules, discs, muscles, ligaments, tendons, their complete neurological and vascular components, referred organ systems and contiguous tissues. This also includes the development and perfection of skills relative to health maintenance when such exists and when not, the investigations, historical review, physical detection, correlative diagnosis development and complete management of any disorder within the bounds defined herein. Also necessary is the delivery of the combined knowledge and skill on a primary basis to patients who both need and desire this service to the eventual outcome of remissions, whenever resolution is not readily achievable. In addition the certified chiropractic orthopedist provides consultation services at the request of other qualified doctors seeking assistance in the care of their patients. The chiropractic orthopedist may also engage in the teaching and or research of subjects and materials relevant to pursuing the quest for knowledge in the ever changing field of the orthopedic specialty.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

7 Associated Practitioners
Dr. Matthew Grierson , MD

Physical Medicine & Rehabilitation - Sports Medicine

NPI 1053549618

Doctor of Medicine (M.D.)

Dr. Nancy Kadel , MD

Physical Medicine & Rehabilitation

NPI 1144306952

Doctor of Medicine (M.D.)

Harper Zimmer , PA-C

Physician Assistant - Medical

NPI 1356923353

Physician Assistant (Certified)

Dr. Aaron Butler , MD

Physical Medicine & Rehabilitation

NPI 1700204245

Doctor of Medicine (M.D.)

Dr. Kelvin Franke , DO

Physical Medicine & Rehabilitation

NPI 1720266752

Doctor of Osteopathic Medicine (D.O.)

Joseph Wilmhoff , ARNP

Nurse Practitioner - Adult Health

NPI 1760631469

Advanced Registered Nurse Practitioner

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

11 Historical Events
📍
Updated Practice Location March 30, 2026

Registered at 4300 198TH ST SW STE 300, LYNNWOOD, WA 980366771 (Tel: 4253611122)

📍
Updated Business Mailing Address March 30, 2026

Registered at 4300 198TH ST SW STE 300, LYNNWOOD, WA 980366771 (Tel: 4253611122)

📍
Updated Practice Location February 27, 2019

Registered at 15 SW EVERETT MALL WAY STE G, EVERETT, WA 982042715 (Tel: 4253555222)

📍
Updated Business Mailing Address February 27, 2019

Registered at 15 SW EVERETT MALL WAY STE G, EVERETT, WA 982042715 (Tel: 4253555222)

👤
Provider Name / Credentials Updated February 27, 2019

Recorded as WILLIAM MARSON, DC

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 13118 121ST WAY NE STE 100, KIRKLAND, WA 980343004 (Tel: 4258202773)

📍
Updated Business Mailing Address July 08, 2007

Registered at 13118 121ST WAY NE STE 100, KIRKLAND, WA 980343004 (Tel: 4258202773)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as WILLIAM MARSON, D.C.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Chiropractor (License #CH00003099 in WA)

🟢
Initial NPI Registration & Enumeration February 08, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1922149574
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 08, 2007
Last Update: March 30, 2026
Sole Proprietor: No

Mailing Address

4300 198th St Sw Ste 300

Lynnwood, WA 980366771

Phone: 4253611122

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.