Michael Clark, R.N.
NPI 1255478111 · General Practice Registered Nurse · Mather, CA
Michael Clark, R.N. is a General Practice Registered Nurse provider in Mather, CA (NPI 1255478111).
Provider details
- NPI number
- 1255478111
- Entity type
- Individual
- Primary specialty
- General Practice Registered NurseNursing Service Providers
- Credential
- R.N.
- Sex
- Male
- Sole proprietor
- No
- License
- RN 199634 (OH)
Specialties & taxonomies
Nursing Service Providers
Nursing Service Providers
Nursing Service Providers
Nursing Service 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
- 2007-01-31
- Last updated
- 2012-06-29
Frequently asked questions
- What is Michael Clark's NPI number?
- Michael Clark's National Provider Identifier (NPI) is 1255478111, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Clark's specialty?
- Michael Clark is listed in the NPPES registry with a primary specialty of General Practice Registered Nurse (Nursing Service Providers).
- Where is Michael Clark located?
- Michael Clark's practice location on file with NPPES is 10535 Hospital Way, Mather, CA 95655-4200.
- What is Michael Clark's phone number?
- The practice phone number listed in the NPPES registry for Michael Clark is (916) 366-5410.
- Is Michael Clark's NPI active?
- Yes — Michael Clark's NPI (1255478111) is active in the NPPES registry as of the last update on 2012-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.