Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Robert J Mazzeo, MD
Surgery Physician in Ypsilanti, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1417991977
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Registry record
Entity type Individual (Type 1)
Name Robert J Mazzeo
Credential MD
Sex Male
Practice address 5325 Elliott Dr, Suite 104, Ypsilanti, MI, 48197
Phone (734) 712-8150
Fax (734) 712-8151
Enumeration date Jun 15, 2006
Last updated in NPPES Sep 19, 2012
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 4147163-10 | Medicaid | MI | - |
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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Robert Mazzeo?
Robert Mazzeo is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Susan Illikman Acute Care Nurse Practitioner · Ypsilanti, MI NPI 1245237387 Andrew Pruitt Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Ypsilanti, MI NPI 1750377206 Manak Sood Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Ypsilanti, MI NPI 1558357004 Christine Colver Acute Care Clinical Nurse Specialist · Ypsilanti, MI NPI 1467432708 Michael O'Donnell Specialist · Ypsilanti, MI NPI 1295702736 Stephen Rosenblum Specialist · Ypsilanti, MI NPI 1538136080 Janet Shanahan Nurse Practitioner · Ypsilanti, MI NPI 1699742148 Radmira Greenstein Clinical Cardiac Electrophysiology Physician · Ypsilanti, MI NPI 1215904743
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-09-19.