DR. BRIAN PATRICK REGAN SR. D.O.
NPI 1235279183
Pediatrics - Pediatric Gastroenterology in Boston, MA
About Dr. Brian Patrick Regan Sr. D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRIAN PATRICK REGAN SR. D.O. (NPI 1235279183) is an individual pediatric gastroenterology provider in Boston, Massachusetts, licensed in New York (226701) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and is a graduate of New York College Of Osteo Medicine Of New York Institute Of Technology (2001).
NPPES Registry Identity
Specialties & Licenses
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. Brian Patrick Regan Sr. D.o. 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 Reassignment
Medicare enrollment records show Brian Regan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 1,358 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02111 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
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 Brian Regan's NPI number?
The NPI number for Brian Regan is 1235279183. It was assigned to this individual provider in the NPPES registry on February 8, 2007.
Where is Brian Regan located?
Brian Regan practices at 750 Washington St Pediatric Gastroenterology 2nd Floor Floating Hospital, Boston, MA 02111. The listed phone number is (617) 636-3266.
What is Brian Regan's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.
Is Brian Regan enrolled in Medicare?
Yes. Brian Regan 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 organization bills Medicare for Brian Regan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brian Regan reassigns Medicare benefits to Children's Hospital Pediatric Associates, Inc (Boston, MA). The 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 Brian Regan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brian Regan accept?
Health plans from Taro Health list Brian Regan 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 Brian Regan was last updated on April 2, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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. Brian Patrick Regan Sr., D.O. · NPI 1235279183
Pediatric Gastroenterology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since February 8, 2007.
## Identity
- **NPI:** 1235279183 (Entity type: Individual)
- **Enumerated:** February 8, 2007
- **Primary specialty:** Pediatrics - Pediatric Gastroenterology · taxonomy 2080P0206X
- **State license:** 226701 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 750 WASHINGTON ST, PEDIATRIC GASTROENTEROLOGY 2ND FLOOR FLOATING HOSPITAL, Boston, MA 02111-1526
- **Phone:** (617) 636-3266
## 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:** Children's Hospital Pediatric Associates, Inc (NPI 1457306664, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York College Of Osteo Medicine Of New York Institute Of Technology, class of 2001
## Record status
- **NPPES last updated:** April 2, 2010
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Source: [NPI Profile](https://npiprofile.com/npi/1235279183) · Data from the CMS NPPES public registry.