Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John James Janeiro Jr., MD
Urology Physician in Nashua, NH · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427139468
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Registry record
Entity type Individual (Type 1)
Name Dr. John James Janeiro Jr.
Credential MD
Sex Male
Practice address 17 Riverside St, Suite 201, Nashua, NH, 03062
Phone (603) 594-0800
Fax (603) 879-9329
Enumeration date Oct 18, 2006
Last updated in NPPES Nov 21, 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
What is the NPI number for John Janeiro?
The National Provider Identifier (NPI) for John Janeiro is 1427139468, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Janeiro practice?
The practice location on file with NPPES is in Nashua, NH. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Howard J Bonenberger Podiatrist · Nashua, NH NPI 1013902345 Miguel Antelo Urology Physician · Nashua, NH NPI 1720069545 Angelica Gonzalez Internal Medicine Physician · Nashua, NH NPI 1720064454 Jeremy Waldman Plastic Surgery Physician · Nashua, NH NPI 1437129665 Debra Urquhart Adult Health Nurse Practitioner · Nashua, NH NPI 1558325423 Susan Finerty Surgical Physician Assistant · Nashua, NH NPI 1619925278 Dinakar Murthi Orthopaedic Surgery Physician · Nashua, NH NPI 1346297801 Daniel Bouvier Orthopaedic Surgery Physician · Nashua, NH NPI 1104866938
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-21.