Bayley Brennan, MD
NPI 1861295529 · Internal Medicine Physician · Scottsdale, AZ
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bayley Brennan, MD is a Internal Medicine Physician provider in Scottsdale, AZ (NPI 1861295529).
Provider details
- NPI number
- 1861295529
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- R81493 (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
1 yr 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
- 2025-03-28
- Last updated
- 2025-07-09
- Certified
- 2025-07-09
Frequently asked questions
- What is Bayley Brennan's NPI number?
- Bayley Brennan's National Provider Identifier (NPI) is 1861295529, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bayley Brennan's specialty?
- Bayley Brennan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Bayley Brennan located?
- Bayley Brennan's practice location on file with NPPES is 13400 E Shea Blvd, Scottsdale, AZ 85259-5452.
- What is Bayley Brennan's phone number?
- The practice phone number listed in the NPPES registry for Bayley Brennan is (480) 301-8000.
- Does Bayley Brennan accept Medicare?
- Bayley Brennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bayley Brennan's NPI active?
- Yes — Bayley Brennan's NPI (1861295529) is active in the NPPES registry as of the last update on 2025-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.