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

Mr. John Steven Portwood, MD

Individual provider Orthopaedic Foot and Ankle Surgery Physician · NPI 1255393492

Mr. John Steven Portwood, MD is an Orthopaedic Foot and Ankle Surgery Physician in Riverside, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3838 Sherman Dr Ste 2
Riverside, CA 92503-4001
Phone: (951) 354-7270
Fax: (951) 354-0625
Show map & directions

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

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence G51596 (CA)
Orthopaedic Foot and Ankle Surgery Physician Taxonomy 207XX0004X · Licence G51596 (CA)
Orthopaedic Trauma Physician Taxonomy 207XX0801X · Licence G51596 (CA)
Adult Reconstructive Orthopaedic Surgery Physician Taxonomy 207XS0114X · Licence G51596 (CA)

Record details

NPI number1255393492
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 4, 2006
Last updated in NPPESMarch 2, 2010