Dana Niguel Internal Medicine Group
NPI 1891839155 · Internal Medicine Physician · San Clemente, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dana Niguel Internal Medicine Group is a Internal Medicine Physician organization in San Clemente, CA (NPI 1891839155).
Provider details
- NPI number
- 1891839155
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Greg Brown, Owner(949) 495-4305
- License
- A40335 (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
Other names (DBA / former)
- Doing business as
- Greg A. Brown, M.D.
Registry dates
- Enumerated
- 2007-02-19
- Last updated
- 2008-11-07
Frequently asked questions
- What is Dana Niguel Internal Medicine Group's NPI number?
- Dana Niguel Internal Medicine Group's National Provider Identifier (NPI) is 1891839155, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Dana Niguel Internal Medicine Group?
- Dana Niguel Internal Medicine Group is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Dana Niguel Internal Medicine Group located?
- Dana Niguel Internal Medicine Group's practice location on file with NPPES is 655 Camino De Los Mares, San Clemente, CA 92673-2809.
- What is Dana Niguel Internal Medicine Group's phone number?
- The practice phone number listed in the NPPES registry for Dana Niguel Internal Medicine Group is (949) 661-9657.
- Does Dana Niguel Internal Medicine Group accept Medicare?
- Dana Niguel Internal Medicine Group 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 Dana Niguel Internal Medicine Group?
- The authorized official listed on Dana Niguel Internal Medicine Group's NPPES record is Greg Brown, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Dana Niguel Internal Medicine Group's NPI active?
- Yes — Dana Niguel Internal Medicine Group's NPI (1891839155) is active in the NPPES registry as of the last update on 2008-11-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.