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

Dr. Mark Stilphen, MD

Individual provider Internal Medicine Physician · NPI 1063630630

Dr. Mark Stilphen, MD is an Internal Medicine Physician in San Luis Obispo, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
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

1250 Peach St Ste B
San Luis Obispo, CA 93401-2869
Phone: (805) 543-4043
Fax: (805) 543-7640
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G28153 (CA)

Record details

NPI number1063630630
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 20, 2007
Last updated in NPPESMay 14, 2019

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