Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Deborah Louise Viher, NP
Nurse Practitioner in Ann Arbor, MI · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1871586479
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Registry record
Entity type Individual (Type 1)
Name Deborah Louise Viher
Credential NP
Sex Female
Practice address 1500 E Medical Center Dr, 3rd Floor Taubman Center Recp D, Ann Arbor, MI, 48109
Phone (734) 647-5944
Enumeration date Aug 30, 2005
Last updated in NPPES Aug 10, 2011
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704133731 (MI) Primary
363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1515380 (MI) Secondary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority.
About the NP credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 4720162 | Medicaid | MI | - |
| 5008670830 | Other | MI | BCBS INDIVIDUAL |
| 0H14989 | Other | MI | BCBSM GROUP |
| 4929033 | 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 Deborah Viher?
Deborah Viher 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-10.