Gregory Butler, MD
NPI 1659335230 · Pediatrics Physician · San Diego, CA
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Butler, MD is a Pediatrics Physician provider in San Diego, CA (NPI 1659335230).
Provider details
- NPI number
- 1659335230
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A79316 (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
20 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
- 2006-04-12
- Last updated
- 2026-03-26
- Certified
- 2026-03-26
Frequently asked questions
- What is Gregory Butler's NPI number?
- Gregory Butler's National Provider Identifier (NPI) is 1659335230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Butler's specialty?
- Gregory Butler is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Butler located?
- Gregory Butler's practice location on file with NPPES is 34800 Bob Wilson Dr, San Diego, CA 92134-1098.
- What is Gregory Butler's phone number?
- The practice phone number listed in the NPPES registry for Gregory Butler is (619) 532-8225.
- Does Gregory Butler accept Medicare?
- Gregory Butler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Butler's NPI active?
- Yes — Gregory Butler's NPI (1659335230) is active in the NPPES registry as of the last update on 2026-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.