Christopher A. Simmons, MD
NPI 1134818057 · Internal Medicine Physician · Lafayette, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher A. Simmons, MD is a Internal Medicine Physician organization in Lafayette, CA (NPI 1134818057).
Provider details
- NPI number
- 1134818057
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Christopher Simmons, Owner(925) 998-5504
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
3 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
- 2023-05-05
- Last updated
- 2023-09-28
- Certified
- 2023-09-28
Frequently asked questions
- What is Christopher A. Simmons, MD's NPI number?
- Christopher A. Simmons, MD's National Provider Identifier (NPI) is 1134818057, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Christopher A. Simmons, MD?
- Christopher A. Simmons, MD is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher A. Simmons, MD located?
- Christopher A. Simmons, MD's practice location on file with NPPES is 1027 Brown Ave, Lafayette, CA 94549-3901.
- What is Christopher A. Simmons, MD's phone number?
- The practice phone number listed in the NPPES registry for Christopher A. Simmons, MD is (925) 273-7508.
- Does Christopher A. Simmons, MD accept Medicare?
- Christopher A. Simmons, MD is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Christopher A. Simmons, MD?
- The authorized official listed on Christopher A. Simmons, MD's NPPES record is Christopher Simmons, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Christopher A. Simmons, MD's NPI active?
- Yes — Christopher A. Simmons, MD's NPI (1134818057) is active in the NPPES registry as of the last update on 2023-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.