Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Maristela Y Nabong-Nillas, M.D.
Pediatrics Physician in Mesa, AZ · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1629155338
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Registry record
Entity type Individual (Type 1)
Name Maristela Y Nabong-Nillas
Credential M.D.
Sex Female
Practice address 1705 W Main St, Mesa, AZ, 85201
Phone (623) 583-3001
Enumeration date Nov 1, 2006
Last updated in NPPES Jan 11, 2021
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 |
|---|---|---|---|
| 6961002 | Medicaid | NJ | - |
| 082796 | Medicaid | AZ | - |
| 307457 | Medicaid | SC | - |
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 specialty is Maristela Nabong-Nillas?
Maristela Nabong-Nillas is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all → Robert Babyar Family Medicine Physician · Mesa, AZ NPI 1558364646 Martin Catero Family Medicine Physician · Mesa, AZ NPI 1891781027 Christine Rejdukowski Pediatrics Physician · Mesa, AZ NPI 1487622411 Neeta Arya General Practice Dentistry · Mesa, AZ NPI 1235190083 Maria Castro Family Medicine Physician · Mesa, AZ NPI 1811934441 Robert Elk Internal Medicine Physician · Mesa, AZ NPI 1083643514 April Lucas Clinical Social Worker · Mesa, AZ NPI 1366471963 Melissa Johnson Professional Counselor · Mesa, AZ NPI 1972533560
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-11.