Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassandra Juanita Kaiser, D.O.

Physical Medicine & Rehabilitation Physician in Boston, MA · enumerated 2015.

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

National Provider Identifier

1255719324

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Registry record

Entity type Individual (Type 1)

Name Cassandra Juanita Kaiser

Credential D.O.

Sex Female

Practice address 55 Fruit St, Boston, MA, 02114

Phone (940) 765-9499

Enumeration date May 11, 2015

Last updated in NPPES Mar 19, 2025

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 83833 (GA) Secondary

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 1021270 (MA) Secondary

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 325621-01 (NY) Primary

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License OP61672550 (WA) Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Cassandra Kaiser?

The National Provider Identifier (NPI) for Cassandra Kaiser is 1255719324, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cassandra Kaiser practice?

The practice location on file with NPPES is in Boston, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Andrew Chan Gastroenterology Physician · Boston, MA NPI 1982600144 Kaloyan Tanev Psychiatry Physician · Boston, MA NPI 1538166889 Russel Roberts Critical Care Pharmacist · Boston, MA NPI 1861494312 Miriam Neuman Diagnostic Radiology Physician · Boston, MA NPI 1689668675 Robert Mckenna Surgical Physician Assistant · Boston, MA NPI 1912992876 Nancy Gagliano Internal Medicine Physician · Boston, MA NPI 1881680767 David Torchiana Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Boston, MA NPI 1285620161 Scott Masterson Pain Medicine (Physical Medicine & Rehabilitation) Physician · Boston, MA NPI 1598751323

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-19.