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BACK BAY ALLERGY ASSOCIATES LLC
NPI 1821151572
Specialist in Brookline, MA

Active since December 17, 2006
1101 BEACON ST, BROOKLINE, MA 02446(617) 734-2202(617) 734-2408 Get Directions Write a Review

NPPES record last updated: July 15, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Back Bay Allergy Associates Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

BACK BAY ALLERGY ASSOCIATES LLC (NPI 1821151572) is a healthcare organization registered as a specialist in Brookline, Massachusetts and active in the NPI registry since December 2006. The organization lists Martin George Ostro, Manager, as its authorized official.

NPPES Registry Identity

NPI1821151572
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameBACK BAY ALLERGY ASSOCIATES LLC
Location Address1101 BEACON STBrookline, MA 02446-5587
Mailing Address1101 Beacon St, Suite 7 EastBrookline, MA 02446-5587 · (617) 734-2202 · Fax (617) 734-2408
Phone(617) 734-2202
Fax(617) 734-2408
Organization SubpartNo
Authorized OfficialMartin George OstroManager · (617) 734-2202
Enumeration DateDecember 17, 2006
Last NPPES UpdateJuly 15, 2015
✔ NPI 1821151572 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in MA · 30946
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
1101 BEACON ST, Brookline, MA 02446
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Back Bay Allergy Associates Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Back Bay Allergy Associates LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Martin Ostro, M.D.
Allergy/Immunology
NPI 1467423848
1101 BEACON ST SUITE 7 EAST
Brookline, MA 02446
(617) 734-2202
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Back Bay Allergy Associates LLC's NPI number?

The NPI number for Back Bay Allergy Associates LLC is 1821151572. It was assigned to this organization in the NPPES registry on December 17, 2006.

Where is Back Bay Allergy Associates LLC located?

Back Bay Allergy Associates LLC is located at 1101 Beacon St, Brookline, MA 02446. The listed phone number is (617) 734-2202.

What is Back Bay Allergy Associates LLC's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Back Bay Allergy Associates LLC enrolled in Medicare?

Yes. Back Bay Allergy Associates LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Back Bay Allergy Associates LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Allergy/Immunology) reassigns their Medicare billing to Back Bay Allergy Associates LLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Back Bay Allergy Associates LLC accept?

Health plans from Anthem Blue Cross and Blue Shield list Back Bay Allergy Associates LLC 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 Back Bay Allergy Associates LLC was last updated on July 15, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.