Individual Healthcare Provider
John Dewolfe Mackenzie, MD
Provider's NPPES record last updated: August 22, 2019
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1437356268
- Primary Specialty
- Radiology — Pediatric Radiology
- Practice Location
- Lynnwood, Washington
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 20, 2026, 7:19 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Radiology
Pediatric Radiology
Allopathic & Osteopathic Physicians
A radiologist who is proficient in all forms of diagnostic imaging as it pertains to the treatment of diseases in the newborn, infant, child and adolescent. This specialist has knowledge of both imaging and interventional procedures related to the care and management of diseases of children. A pediatric radiologist must be highly knowledgeable of all organ systems as they relate to growth and development, congenital malformations, diseases peculiar to infants and children and diseases that begin in childhood but cause substantial residual impairment in adulthood.
Taxonomy code 2085P0229X Radiology
Diagnostic Radiology
Allopathic & Osteopathic Physicians
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
Taxonomy code 2085R0202X
Provider-Reported License Information
- Radiology (Washington)
- MD60942783
- Radiology (California)
- A99500
- Radiology (California)
- A99500
- Radiology (Washington)
- MD60942783
Practice Locations
Practice Location
19020 33rd Ave W Ste 210
Lynnwood, Washington 98036
Phone: (425) 563-1500
Additional Practice Location
725 Welch Road
Lpch Radiology
Stanford, California 94305-5654
Phone: (650) 725-2548
Additional Practice Location
400 Parnassus Ave
San Francisco, California 94143
Phone: (415) 476-1000
Additional Practice Location
400 Parnassus Ave
San Francisco, California 94143
Phone: (415) 476-1000
Record Information
- Enumeration Date
- June 27, 2007
- Provider's NPPES Record Last Updated
- August 22, 2019
- NPISignal NPPES Dataset
- August 2026
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