William Sisson, M.D.
NPI 1548792658 · Surgery Physician · Camp Pendleton, CA
Enrolled with Medicare as Order and Referring Only - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Sisson, M.D. is a Surgery Physician provider in Camp Pendleton, CA (NPI 1548792658).
Provider details
- NPI number
- 1548792658
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 158920 (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
9 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 34800 Bob Wilson DrSan Diego, CA 92134-6511Phone: (619) 532-6400
- 655 W 8th StJacksonville, FL 32209-6511Phone: (904) 383-1015Fax: (904) 244-8172
Registry dates
- Enumerated
- 2017-03-28
- Last updated
- 2023-12-15
- Certified
- 2023-12-13
Frequently asked questions
- What is William Sisson's NPI number?
- William Sisson's National Provider Identifier (NPI) is 1548792658, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Sisson's specialty?
- William Sisson is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is William Sisson located?
- William Sisson's practice location on file with NPPES is 200 Mercy Circle, Camp Pendleton, CA 92055-5191.
- What is William Sisson's phone number?
- The practice phone number listed in the NPPES registry for William Sisson is (760) 725-1356.
- Does William Sisson accept Medicare?
- William Sisson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Sisson's NPI active?
- Yes — William Sisson's NPI (1548792658) is active in the NPPES registry as of the last update on 2023-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.