Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Warwick Douglas Johnston III, ND

Individual provider Naturopath · NPI 1932617388

Dr. Warwick Douglas Johnston III, ND is a Naturopath in Tustin, California. Practices as a sole proprietor. Licensed in California and Hawaii.

Licensed in
CA, HI
In the registry since
2018
Specialties on file
2

Practice location Address checks out

13422 Newport Ave Ste L
Tustin, CA 92780-3746
Phone: (714) 544-1521
Show map & directions

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

Specialties & licences

Naturopath (primary) Taxonomy 175F00000X · Licence ND1350 (CA)
Naturopath Taxonomy 175F00000X · Licence ND-289 (HI)

Record details

NPI number1932617388
Entity typeIndividual (Type 1)
GenderMale
Credentials ND
Sole proprietorYes
NPI enumeratedJanuary 19, 2018
Last updated in NPPESOctober 25, 2022
Certification dateOctober 25, 2022

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