Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Steven M Spiegel, M.D.
Nephrology Physician in Natick, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669538591
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Registry record
Entity type Individual (Type 1)
Name Dr. Steven M Spiegel
Credential M.D.
Sex Male
Practice address 67 Union St, Natick, MA, 01760
Phone (508) 650-7890
Enumeration date Dec 28, 2006
Last updated in NPPES Apr 8, 2011
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
Where does Steven Spiegel practice?
The practice location on file with NPPES is in Natick, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Steven Spiegel?
The National Provider Identifier (NPI) for Steven Spiegel is 1669538591, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Arnold Miller Specialist · Natick, MA NPI 1609862994 Metrowest Vascular PC Vascular Surgery Physician · Natick, MA NPI 1033108576 William Goodman Surgery Physician · Natick, MA NPI 1477542637 Kathaleen Porter Surgery Physician · Natick, MA NPI 1093706517 Karen Gail Brandse MD & Assoc Internal Medicine Physician · Natick, MA NPI 1588645782 Karen-Gail Brandse Internal Medicine Physician · Natick, MA NPI 1588645790 Lawrence Handler Gastroenterology Physician · Natick, MA NPI 1134101470 Stephen Rosenthal Psychiatry Physician · Natick, MA NPI 1821069451
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-08.