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Sujay Dayal
NPI 1740920966 · Internal Medicine Physician · Ontario, CA
Sujay Dayal is a Internal Medicine Physician provider in Ontario, CA (NPI 1740920966).
Provider details
- NPI number
- 1740920966
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- 21643 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(60/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
437 N Euclid Ave
Ontario, CA 91762-3427
Phone: (909) 988-2555
Street-level locationGet directions
Mailing address
2334 Brown Deer Ct
Chino Hills, CA 91709-4351
Registry dates
- Enumerated
- 2022-03-29
- Last updated
- 2026-06-01
- Certified
- 2026-06-01
Frequently asked questions
- What is Sujay Dayal's NPI number?
- Sujay Dayal's National Provider Identifier (NPI) is 1740920966, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sujay Dayal's specialty?
- Sujay Dayal is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sujay Dayal located?
- Sujay Dayal's practice location on file with NPPES is 437 N Euclid Ave, Ontario, CA 91762-3427.
- What is Sujay Dayal's phone number?
- The practice phone number listed in the NPPES registry for Sujay Dayal is (909) 988-2555.
- Is Sujay Dayal's NPI active?
- Yes — Sujay Dayal's NPI (1740920966) is active in the NPPES registry as of the last update on 2026-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.