Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

David M Mastrianni MD

Q: What is the NPI number for David M Mastrianni MD?

The NPI for David M Mastrianni MD is 1013909852, a Type 2 (organization) record in the CMS NPPES registry.

Hematology & Oncology Physician in Saratoga Springs, NY · enumerated 2005 · authorized official David Mastrianni, Owner.

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

National Provider Identifier

1013909852

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Registry record

Entity type Organization (Type 2)

Legal business name David M Mastrianni MD

Practice address 3 Care Ln, Suite 300, Saratoga Springs, NY, 12866

Phone (518) 226-6000

Fax (518) 226-6001

Enumeration date Aug 18, 2005

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name David Mastrianni

Title Owner

Phone (518) 226-6000

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 David M Mastrianni MD?

The NPI for David M Mastrianni MD is 1013909852, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for David M Mastrianni MD?

NPPES lists David Mastrianni (Owner) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.