Mark Stilphen, MD
NPI 1063630630 · Internal Medicine Physician · San Luis Obispo, CA
Mark Stilphen, MD is a Internal Medicine Physician provider in San Luis Obispo, CA (NPI 1063630630).
Provider details
- NPI number
- 1063630630
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G28153 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-20
- Last updated
- 2019-05-14
Frequently asked questions
- What is Mark Stilphen's NPI number?
- Mark Stilphen's National Provider Identifier (NPI) is 1063630630, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Stilphen's specialty?
- Mark Stilphen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Stilphen located?
- Mark Stilphen's practice location on file with NPPES is 1250 Peach St Ste B, San Luis Obispo, CA 93401-2869.
- What is Mark Stilphen's phone number?
- The practice phone number listed in the NPPES registry for Mark Stilphen is (805) 543-4043.
- Is Mark Stilphen's NPI active?
- Yes — Mark Stilphen's NPI (1063630630) is active in the NPPES registry as of the last update on 2019-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.