Gregory Cusack, DC
NPI 1841361797 · Chiropractor · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Chiropractic · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Cusack, DC is a Chiropractor provider in Walnut Creek, CA (NPI 1841361797).
Provider details
- NPI number
- 1841361797
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- DC
- Sex
- Male
- Sole proprietor
- No
- License
- DC12150 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-11-13
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Cusack's NPI number?
- Gregory Cusack's National Provider Identifier (NPI) is 1841361797, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Cusack's specialty?
- Gregory Cusack is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Gregory Cusack located?
- Gregory Cusack's practice location on file with NPPES is 2801 Ygnacio Valley Rd, Walnut Creek, CA 94598.
- What is Gregory Cusack's phone number?
- The practice phone number listed in the NPPES registry for Gregory Cusack is (925) 945-0555.
- Does Gregory Cusack accept Medicare?
- Gregory Cusack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Cusack's NPI active?
- Yes — Gregory Cusack's NPI (1841361797) 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.