Mark Brown, M.D.
NPI 1225021264 · Internal Medicine Physician · Sun City, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Brown, M.D. is a Internal Medicine Physician provider in Sun City, AZ (NPI 1225021264).
Provider details
- NPI number
- 1225021264
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 19655 (AZ)
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
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
Mailing address
Registry dates
- Enumerated
- 2005-08-24
- Last updated
- 2016-09-09
Frequently asked questions
- What is Mark Brown's NPI number?
- Mark Brown's National Provider Identifier (NPI) is 1225021264, 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 Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Brown located?
- Mark Brown's practice location on file with NPPES is 14678 N Del Webb Blvd, Sun City, AZ 85351-2137.
- What is Mark Brown's phone number?
- The practice phone number listed in the NPPES registry for Mark Brown is (623) 933-8289.
- Does Mark Brown accept Medicare?
- Mark Brown is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Brown's NPI active?
- Yes — Mark Brown's NPI (1225021264) is active in the NPPES registry as of the last update on 2016-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.