Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. R. Douglas Mccollum, PHD
Psychologist in Moline, IL · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1740319821
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Registry record
Entity type Individual (Type 1)
Name Dr. R. Douglas Mccollum
Credential PHD
Sex Male
Practice address 2101 47th St, Moline, IL, 61265
Phone (309) 762-3931
Fax (309) 762-4938
Enumeration date Mar 5, 2007
Last updated in NPPES Sep 25, 2007
Taxonomy & licenses
103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers · License 00512 (IA) Secondary
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 58957 | Other | IA | WELLMARK BCBS |
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 R. Mccollum?
R. Mccollum is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-25.