Sleepology
NPI 1538090550 · Sleep Medicine (Internal Medicine) Physician · Claremont, CA
Sleepology is a Sleep Medicine (Internal Medicine) Physician organization in Claremont, CA (NPI 1538090550).
Provider details
- NPI number
- 1538090550
- Entity type
- Organization
- Primary specialty
- Sleep Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Sujay Dayal, Dr.(909) 331-6321
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2 documented practice locations
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
Additional practice locations (1)
- 2334 Brown Deer CtChino Hills, CA 91709-4351Phone: (909) 331-6321
Registry dates
- Enumerated
- 2026-05-27
- Last updated
- 2026-05-27
- Certified
- 2026-05-27
Frequently asked questions
- What is Sleepology's NPI number?
- Sleepology's National Provider Identifier (NPI) is 1538090550, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sleepology?
- Sleepology is classified in the NPPES registry as Sleep Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Sleepology located?
- Sleepology's practice location on file with NPPES is 1601 Monte Vista Ave Ste 270, Claremont, CA 91711-6604.
- What is Sleepology's phone number?
- The practice phone number listed in the NPPES registry for Sleepology is (909) 865-9152.
- Who is the authorized official for Sleepology?
- The authorized official listed on Sleepology's NPPES record is Sujay Dayal, Dr.. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sleepology's NPI active?
- Yes — Sleepology's NPI (1538090550) is active in the NPPES registry as of the last update on 2026-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.