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Mark Locker, DC
NPI 1912916768 · Chiropractor · Walnut Creek, CA
Mark Locker, DC is a Chiropractor provider in Walnut Creek, CA (NPI 1912916768).
Provider details
- NPI number
- 1912916768
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- DC
- Sex
- Male
- Sole proprietor
- Yes
- License
- DC-30110 (CA)
Specialties & taxonomies
Chiropractic Providers
Profile Score
Detailed profile(91/100 index)
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
1776 Ygnacio Valley Rd
Suite 112
Walnut Creek, CA 94598-3190
Phone: (925) 933-5811
Fax: (925) 933-5813
Street-level locationGet directions
Mailing address
1561 Rancho View Rd
Lafayette, CA 94549-2236
Registry dates
- Enumerated
- 2006-08-07
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Locker's NPI number?
- Mark Locker's National Provider Identifier (NPI) is 1912916768, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Locker's specialty?
- Mark Locker is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Mark Locker located?
- Mark Locker's practice location on file with NPPES is 1776 Ygnacio Valley Rd, Walnut Creek, CA 94598-3190.
- What is Mark Locker's phone number?
- The practice phone number listed in the NPPES registry for Mark Locker is (925) 933-5811.
- Is Mark Locker's NPI active?
- Yes — Mark Locker's NPI (1912916768) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.