NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Doreen Karoll, MD

Developmental - Behavioral Pediatrics Physician in Waltham, MA · enumerated 2014 · authorized official Doreen Karoll, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1205231339

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Doreen Karoll, MD
Other name <Unavail>
Practice address 32 South St, Suite 200, Waltham, MA, 02453
Phone (781) 320-9680
Fax (781) 780-5688
Enumeration date Oct 31, 2014
Last updated in NPPES Dec 9, 2016

Taxonomy & classification

2080P0006X Developmental - Behavioral Pediatrics Physician Allopathic & Osteopathic Physicians · License 73765 (MA) Primary

Authorized official

Name Doreen Karoll
Title Owner
Phone (781) 549-7377

Other identifiers

Identifier Type State Issuer
110051703A Medicaid MA -
J31710 Other MA BCBSMA

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Doreen Karoll, MD?
NPPES lists Doreen Karoll (Owner) as the authorized official for this organization.
What is the NPI number for Doreen Karoll, MD?
The NPI for Doreen Karoll, MD is 1205231339, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-12-09.