Christopher Ma, D.C.
NPI 1205717675 · Chiropractor · Castro Valley, CA
Enrolled with Medicare as Practitioner - Chiropractic · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Ma, D.C. is a Chiropractor provider in Castro Valley, CA (NPI 1205717675).
Provider details
- NPI number
- 1205717675
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- D.C.
- Sex
- Male
- Sole proprietor
- No
- License
- DC37429 (CA)
Specialties & taxonomies
Chiropractic Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
- 2025-09-10
- Last updated
- 2026-01-23
- Certified
- 2026-01-23
Frequently asked questions
- What is Christopher Ma's NPI number?
- Christopher Ma's National Provider Identifier (NPI) is 1205717675, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Ma's specialty?
- Christopher Ma is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Christopher Ma located?
- Christopher Ma's practice location on file with NPPES is 21669 Redwood Rd, Castro Valley, CA 94546-6431.
- What is Christopher Ma's phone number?
- The practice phone number listed in the NPPES registry for Christopher Ma is (510) 582-7418.
- Does Christopher Ma accept Medicare?
- Christopher Ma is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Ma's NPI active?
- Yes — Christopher Ma's NPI (1205717675) is active in the NPPES registry as of the last update on 2026-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.