DR. BRETT J HALLORAN M.D.
NPI 1235280470
Internal Medicine in Sarasota, FL
About Dr. Brett J Halloran M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRETT J HALLORAN M.D. (NPI 1235280470) is an individual internal medicine provider in Sarasota, Florida, licensed in California (C131872) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Brett J Halloran M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
10Medicare enrollment records show Brett Halloran reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Albuquerque, NM 87111
- Reassigned Medicare billing, Arizona enrollment
- 64 clinicians in this Medicare group
Phoenix, AZ 85008
- Reassigned Medicare billing, Arizona enrollment
- 66 clinicians in this Medicare group
Phoenix, AZ 85016
- Reassigned Medicare billing, Arizona enrollment
- 302 clinicians in this Medicare group
Palm Springs, CA 92262
- Reassigned Medicare billing, California enrollment
- 962 clinicians in this Medicare group
Colton, CA 92324
- Reassigned Medicare billing, California enrollment
- 338 clinicians in this Medicare group
Sunnyvale, CA 94087
- Reassigned Medicare billing, Arizona enrollment
- 56 clinicians in this Medicare group
Mountain View, CA 94040
- Reassigned Medicare billing, California enrollment
- 10 clinicians in this Medicare group
Mountain View, CA 94040
- Reassigned Medicare billing, California enrollment
- 217 clinicians in this Medicare group
San Leandro, CA 94578
- Reassigned Medicare billing, California enrollment
- 11 clinicians in this Medicare group
Alameda, CA 94501
- Reassigned Medicare billing, California enrollment
- 11 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 34232 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Brett Halloran's NPI number?
The NPI number for Brett Halloran is 1235280470. It was assigned to this individual provider in the NPPES registry on January 15, 2007.
Where is Brett Halloran located?
Brett Halloran practices at 943S Beneva Rd 306, Sarasota, FL 34232. The listed phone number is (941) 362-8644.
What is Brett Halloran's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Brett Halloran enrolled in Medicare?
Yes. Brett Halloran is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Brett Halloran's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brett Halloran reassigns Medicare benefits to 10 organizations: Nm Pacs 2 LLC (Albuquerque, NM), Arizona Post-Acute Medical Services 1 PC (Phoenix, AZ), Arizona Acute Medical Services 1 PC (Phoenix, AZ), Galen Inpatient Physicians Inc. (Palm Springs, CA), Quantum Healthcare Medical Associates Inc. (Colton, CA) and 5 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Brett Halloran's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brett Halloran accept?
Health plans from Blue Cross Blue Shield of Arizona list Brett Halloran as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Brett Halloran was last updated on September 25, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Brett J Halloran, M.D. · NPI 1235280470
Internal Medicine physician in Sarasota, Florida. Individual provider, active in the CMS NPPES registry since January 15, 2007.
## Identity
- **NPI:** 1235280470 (Entity type: Individual)
- **Enumerated:** January 15, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** C131872 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 943S BENEVA RD 306, Sarasota, FL 34232-2473
- **Phone:** (941) 362-8644 · **Fax:** (941) 954-4440
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 10 organizations under Medicare reassignment (form CMS-855R): Nm Pacs 2 LLC (NPI 1366928749, Albuquerque, NM); Arizona Post-Acute Medical Services 1 PC (NPI 1093254419, Phoenix, AZ); Arizona Acute Medical Services 1 PC (NPI 1154860674, Phoenix, AZ); Galen Inpatient Physicians Inc. (NPI 1316037021, Palm Springs, CA); Quantum Healthcare Medical Associates Inc. (NPI 1568490597, Colton, CA); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** September 25, 2023
- **Other identifiers:** Medicaid 036125084 (IL); Other 04515143 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1235280470) · Data from the CMS NPPES public registry.