Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Monica Maher, NP

Nurse Practitioner in Billings, MT · enumerated 2007.

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

National Provider Identifier

1548314107

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Registry record

Entity type Individual (Type 1)

Name Monica Maher

Credential NP

Sex Female

Practice address 1233 N 30th St, Billings, MT, 59101

Phone (406) 237-3851

Fax (406) 237-3855

Enumeration date Jan 22, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 22679 (MT) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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.

Read the full guide → Validate an NPI →

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 Monica Maher?

Monica Maher is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Montana Pediatric Critical Care, PC Pediatric Critical Care Medicine Physician · Billings, MT NPI 1972596880 Lisa Murray Physician Assistant · Billings, MT NPI 1821084369 Alison Rentz Neonatal-Perinatal Medicine Physician · Billings, MT NPI 1356332621 Zeferino Arroyo Anesthesiology Physician · Billings, MT NPI 1285601096 Stephen Ball Anesthesiology Physician · Billings, MT NPI 1417924226 Douglas Cornelius Anesthesiology Physician · Billings, MT NPI 1588631204 Kert Christensen Anesthesiology Physician · Billings, MT NPI 1063489771 Gary Mermel Anesthesiology Physician · Billings, MT NPI 1558338103

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.