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Dr. Mason M. Greenslade , DC

Chiropractor β€’ Seattle, WA

Active NPI 1366865388 Individual Practitioner Male Practitioner
Practice location in NPPES

928 Nw Leary Way, Suite 203
Seattle, WA 98107

Call 4253877215 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

928 Nw Leary Way
Suite 203

Seattle, WA 98107

Telephone 4253877215
Organization at the Same NPPES Address or Phone
Mg Chiropractic Llc Facility NPI 1568863330

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Stanwood, WA. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Industry payments (Open Payments)

No Open Payments records are listed for this clinician for 2019–2025.

Guide: How to read an Open Payments record

NPI first issued

2014

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Greenslade has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Compared with the same specialty in Seattle and Washington

350 active clinicians are listed under Chiropractor with a practice address in Seattle, WA (3,009 in Washington).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Seattle

0% of these 350 clinicians have the CMS telehealth indicator.

23.7% of these 350 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2020-01-15
Chiropractor Primary Specialty

NUCC Taxonomy Code: 111N00000X

License # reported to NPPES WA 60431420

A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Washington State Department of Health Provider Lookup.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - CHIROPRACTIC

Medicare Enrollment ID

I20150107000394

Enrollment State Jurisdiction

WA

PECOS Control ID

9739402306

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Secondary Practice Locations

27514 82nd Dr Nw

Stanwood, WA 982929564

Phone: 4253877215

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

8 Historical Events
πŸ“
Updated Practice Location January 15, 2020

Registered at 928 NW LEARY WAY, SUITE 203, SEATTLE, WA 98107 (Tel: 4253877215)

πŸ“
Updated Business Mailing Address January 15, 2020

Registered at 928 NW LEARY WAY, SUITE 203, SEATTLE, WA 98107 (Tel: 4253877215)

βœ…
NPI Profile Active January 27, 2014

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) January 27, 2014

Registered at 27514 82ND DR NW, STANWOOD, STANWOOD, WA 982929564 (Tel: 4253877215)

πŸ“
Business Mailing Address (Initial Record) January 27, 2014

Registered at 101 TAYLOR AVE N, SEATTLE, SEATTLE, WA 981095146

πŸ‘€
Provider Name / Credentials (Initial Record) January 27, 2014

Recorded as MASON GREENSLADE, D.C.

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) January 27, 2014

Chiropractor (license number reported to NPPES: WA 60431420)

🟒
Initial NPI Registration & Enumeration January 27, 2014

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1366865388
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: January 27, 2014
Last Update: January 15, 2020
Sole Proprietor: No

Other Chiropractors in Seattle

All Chiropractors in Seattle

Mailing Address

928 Nw Leary Way, Suite 203

Seattle, WA 98107

Phone: 4253877215

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.