Ralli and Grewal Apc
NPI 1659727865 · Endocrinology, Diabetes & Metabolism Physician · Newport Beach, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ralli and Grewal Apc is a Endocrinology, Diabetes & Metabolism Physician organization in Newport Beach, CA (NPI 1659727865).
Provider details
- NPI number
- 1659727865
- Entity type
- Organization
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Sonia Grewal, President(949) 548-3177
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
10 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
- 2016-05-05
- Last updated
- 2016-05-05
Frequently asked questions
- What is Ralli and Grewal Apc's NPI number?
- Ralli and Grewal Apc's National Provider Identifier (NPI) is 1659727865, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ralli and Grewal Apc?
- Ralli and Grewal Apc is classified in the NPPES registry as Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Ralli and Grewal Apc located?
- Ralli and Grewal Apc's practice location on file with NPPES is 520 Superior Ave, Newport Beach, CA 92663-3637.
- What is Ralli and Grewal Apc's phone number?
- The practice phone number listed in the NPPES registry for Ralli and Grewal Apc is (949) 548-3177.
- Does Ralli and Grewal Apc accept Medicare?
- Ralli and Grewal Apc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Ralli and Grewal Apc?
- The authorized official listed on Ralli and Grewal Apc's NPPES record is Sonia Grewal, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ralli and Grewal Apc's NPI active?
- Yes — Ralli and Grewal Apc's NPI (1659727865) is active in the NPPES registry as of the last update on 2016-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.