Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Melissa Kay Best, PAC
Physician Assistant in Oswego, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538109947
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Melissa Kay Best
Credential PAC
Sex Female
Practice address 80 Templeton Drive, Oswego, IL, 60543
Phone (630) 554-3456
Enumeration date Jun 7, 2006
Last updated in NPPES Feb 7, 2022
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085-002290 (IL) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0451514334 | Other | IL | BLUESHIELD PROVIDER# |
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 Melissa Best?
Melissa Best is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-07.