Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Sleepology

Q: What type of organization is Sleepology?

Sleepology is registered in NPPES as a Sleep Medicine (Internal Medicine) Physician (its primary provider taxonomy).

Sleep Medicine (Internal Medicine) Physician in Claremont, CA · enumerated 2026 · authorized official Sujay Dayal, Dr..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1538090550

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Registry record

Entity type Organization (Type 2)

Legal business name Sleepology

Practice address 1601 Monte Vista Ave Ste 270, Claremont, CA, 91711

Phone (909) 865-9152

Enumeration date May 27, 2026

Last updated in NPPES May 27, 2026

Taxonomy & classification

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Sujay Dayal

Title Dr.

Phone (909) 331-6321

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Sleepology?

Sleepology is registered in NPPES as a Sleep Medicine (Internal Medicine) Physician (its primary provider taxonomy).

Providers at this address

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Heather Davis Pulmonary Disease Physician · Claremont, CA NPI 1154390391

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-27.