Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ross John Baldessarini, MD
Psychiatry Physician in Belmont, MA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1487644787
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Registry record
Entity type Individual (Type 1)
Name Dr. Ross John Baldessarini
Credential MD
Sex Male
Practice address 115 Mill St, Belmont, MA, 02478
Phone (617) 855-3203
Fax (617) 855-3479
Enumeration date Oct 27, 2005
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
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.
Frequently asked questions
Is NPI 1487644787 active?
Yes, as of the latest NPPES snapshot, NPI 1487644787 is active (record last updated 2007-07-08).
How do I verify Ross Baldessarini's NPI record?
Cross-check NPI 1487644787 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Jacqueline Samson Cognitive & Behavioral Psychologist · Belmont, MA NPI 1467454652 Leora Borek Psychiatry Physician · Belmont, MA NPI 1134115553 Roger Weiss Addiction Medicine (Psychiatry & Neurology) Physician · Belmont, MA NPI 1245229855 Craig Boyajian Psychiatry Physician · Belmont, MA NPI 1831188200 Jessica Goldstein Clinical Psychologist · Belmont, MA NPI 1477542777 Alan Barry Addiction Psychiatry Physician · Belmont, MA NPI 1750371431 Marian Klepser Internal Medicine Physician · Belmont, MA NPI 1528058211 Richard Romero Internal Medicine Physician · Belmont, MA NPI 1235129412
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.