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Mark Brown, M.D.
NPI 1982663050 · Specialist · Tustin, CA
Mark Brown, M.D. is a Specialist provider in Tustin, CA (NPI 1982663050).
Provider details
- NPI number
- 1982663050
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- License
- G35526 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
18102 Irvine Blvd
Tustin, CA 92780-3423
Phone: (714) 508-4123
Fax: (714) 508-4134
Street-level locationGet directions
Mailing address
10602 Grove Oak Dr
Santa Ana, CA 92705-2589
Registry dates
- Enumerated
- 2006-03-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Brown's NPI number?
- Mark Brown's National Provider Identifier (NPI) is 1982663050, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Brown's specialty?
- Mark Brown is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Mark Brown located?
- Mark Brown's practice location on file with NPPES is 18102 Irvine Blvd, Tustin, CA 92780-3423.
- What is Mark Brown's phone number?
- The practice phone number listed in the NPPES registry for Mark Brown is (714) 508-4123.
- Is Mark Brown's NPI active?
- Yes — Mark Brown's NPI (1982663050) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.