Preferred Sleep Diagnostics
NPI 1104369503 · Sleep Disorder Diagnostic Clinic/Center · Fullerton, CA
Preferred Sleep Diagnostics is a Sleep Disorder Diagnostic Clinic/Center organization in Fullerton, CA (NPI 1104369503).
Provider details
- NPI number
- 1104369503
- Entity type
- Organization
- Primary specialty
- Sleep Disorder Diagnostic Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Nathaniel Gumm, Ceo(714) 525-6500
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
- 2016-12-02
- Last updated
- 2016-12-02
Frequently asked questions
- What is Preferred Sleep Diagnostics's NPI number?
- Preferred Sleep Diagnostics's National Provider Identifier (NPI) is 1104369503, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Preferred Sleep Diagnostics?
- Preferred Sleep Diagnostics is classified in the NPPES registry as Sleep Disorder Diagnostic Clinic/Center (Ambulatory Health Care Facilities).
- Where is Preferred Sleep Diagnostics located?
- Preferred Sleep Diagnostics's practice location on file with NPPES is 100 Laguna Rd, Fullerton, CA 92835-3633.
- What is Preferred Sleep Diagnostics's phone number?
- The practice phone number listed in the NPPES registry for Preferred Sleep Diagnostics is (714) 525-6500.
- Who is the authorized official for Preferred Sleep Diagnostics?
- The authorized official listed on Preferred Sleep Diagnostics's NPPES record is Nathaniel Gumm, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Preferred Sleep Diagnostics's NPI active?
- Yes — Preferred Sleep Diagnostics's NPI (1104369503) is active in the NPPES registry as of the last update on 2016-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.