Irvine Medical Group
NPI 1891818019 · Endocrinology, Diabetes & Metabolism Physician · Irvine, CA
Irvine Medical Group is a Endocrinology, Diabetes & Metabolism Physician organization in Irvine, CA (NPI 1891818019).
Provider details
- NPI number
- 1891818019
- Entity type
- Organization
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Marshall Grossman, Owner(949) 727-3793
- License
- G32042 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-10
- Last updated
- 2014-06-27
Frequently asked questions
- What is Irvine Medical Group's NPI number?
- Irvine Medical Group's National Provider Identifier (NPI) is 1891818019, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Irvine Medical Group?
- Irvine Medical Group is classified in the NPPES registry as Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Irvine Medical Group located?
- Irvine Medical Group's practice location on file with NPPES is 16300 Sand Canyon Ave, Irvine, CA 92618-3711.
- What is Irvine Medical Group's phone number?
- The practice phone number listed in the NPPES registry for Irvine Medical Group is (949) 727-3793.
- Who is the authorized official for Irvine Medical Group?
- The authorized official listed on Irvine Medical Group's NPPES record is Marshall Grossman, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Irvine Medical Group's NPI active?
- Yes — Irvine Medical Group's NPI (1891818019) is active in the NPPES registry as of the last update on 2014-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.