DR. BRETT J HALLORAN (M.D.) – Internal Medicine Physician, NPI 1235280470

DR. BRETT J HALLORAN (M.D.) is a healthcare provider. based in Sarasota, Florida. specializing in INTERNAL MEDICINE, HOSPITALIST. They hold the professional credentials M.D.. They hold a License No. 036125084 (IL). The NPI Number for DR. BRETT J HALLORAN (M.D.) is 1235280470

Main info

Male
23 Years Of Experience
Accepts Medicare Assignment
Name
DR. BRETT J HALLORAN (M.D.)
NPI
1235280470
Phone
(941) 362-8644
Address
943S BENEVA RD 306
Enumeration Date
15 January 2007
Last Update Date
25 September 2023

Doctor Profile

Medical School Name
OTHER
Secondary Phone
7074623111
Graduation Year
2003 (23 years ago)
PAC ID
0244304715
Group Practice PAC ID
3678464633
Professional Enrollment ID
I20140930002357
Address ID
CA954824531UK275XXDRXX300
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience93
Completeness75
Years active:19State licenses:5Digital endpointsOther names

12,378 INTERNAL MEDICINE in FL

Provider Addresses for DR. BRETT J HALLORAN (M.D.)

  • 943S BENEVA RD 306

    SARASOTA, FL 342322473

    Phone: (941) 362-8644

    Fax: (941) 954-4440

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 1 Open Payments records for all available years, with a total value of $24.

Total Amount is formed as General ($24) + Research ($0) + Ownership ($0) = $24.

Last reported payment date: 2024-02-06 • Largest payer in this snapshot: ABBVIE INC. ($24).

Total Amount

$24

General + Research + Ownership

Payments

1

Total payment records

General Amount

$24

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-02-06

Latest reported date

Top Companies

Largest payers in this snapshot

CompanyAmount
ABBVIE INC.$24
View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2020-01-03

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking 2 Medicare enrollment records; no due dates published yet.

Enrollment records

2

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20140930002357IInternal MedicineCATBD
I20200103001508IInternal MedicineAZTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes646297$0
99239Hospital discharge day management, more than 30 minutes211204$0
99232Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes192112$0
99291Critical care, first 30-74 minutes2416$0
99497Advance care planning, first 30 minutes1514$0
View full utilization report →

Insurance plans in this area (ZIP 34232)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 3678464633View full group profile
NameSpecialtyState
Hospitalist, Internal MedicineIL
Internal MedicineMO
H O S P I T A L I S TMS
Internal MedicineCA
H O S P I T A L I S TSC
Hospitalist, Internal MedicineCA
-MO
Internal MedicineCA
-OR
Internal Medicine, HospitalistIL

Reviews

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Frequently asked questions

Is there an official ID for DR. BRETT J HALLORAN (M.D.) in U.S. healthcare records?
The official identifier for DR. BRETT J HALLORAN (M.D.) is NPI 1235280470.
Would DR. BRETT J HALLORAN (M.D.) appear as active to a payer?
You can treat DR. BRETT J HALLORAN (M.D.) as active for directory purposes; confirm clinical privileges separately.
What area of care is associated with DR. BRETT J HALLORAN (M.D.)?
DR. BRETT J HALLORAN (M.D.)'s record emphasizes Internal Medicine Physician. Clinical services aligned with this taxonomy classification.
Is DR. BRETT J HALLORAN (M.D.) associated with Sarasota?
Public fields place DR. BRETT J HALLORAN (M.D.) around Sarasota, Florida. Always confirm the exact site before visiting.
Does inactive status remove historical data?
Historical rows can remain visible after status changes — read the dates carefully.

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