Gareth Dulai, MD
NPI 1164457883 · Gastroenterology Physician · Downey, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gareth Dulai, MD is a Gastroenterology Physician provider in Downey, CA (NPI 1164457883).
Provider details
- NPI number
- 1164457883
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G80828 (CA)
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
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 448 | 404 |
| Omeprazole | 409 | 146 |
| Pantoprazole Sodium | 77 | 31 |
| Carvedilol | 58 | 18 |
| Sucralfate | 48 | 14 |
| Mesalamine | 35 | 12 |
| Hydrocortisone | 23 | 16 |
| Ursodiol |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2021-12-08
Frequently asked questions
- What is Gareth Dulai's NPI number?
- Gareth Dulai's National Provider Identifier (NPI) is 1164457883, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gareth Dulai's specialty?
- Gareth Dulai is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gareth Dulai located?
- Gareth Dulai's practice location on file with NPPES is 9353 Imperial Hwy, Downey, CA 90242-2812.
- What is Gareth Dulai's phone number?
- The practice phone number listed in the NPPES registry for Gareth Dulai is (562) 657-4292.
- Does Gareth Dulai accept Medicare?
- Gareth Dulai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gareth Dulai's NPI active?
- Yes — Gareth Dulai's NPI (1164457883) is active in the NPPES registry as of the last update on 2021-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.