Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Douglas E Gillies, O.D.
Optometrist in Monroe, MI · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1205831245
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Registry record
Entity type Individual (Type 1)
Name Dr. Douglas E Gillies
Credential O.D.
Sex Male
Practice address 1180 N Monroe St, Monroe, MI, 48162
Phone (734) 243-5300
Fax (734) 243-9956
Enumeration date Jun 16, 2005
Last updated in NPPES Feb 16, 2009
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0261729 | Medicaid | OH | - |
| 410049894 | Other | MI | MEDICARE RAILROAD |
| 944352709 | Medicaid | MI | - |
| 410049893 | Other | OH | MEDICARE RAILROAD |
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 Douglas Gillies?
Douglas Gillies is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Ken Feinauer Optometrist · Monroe, MI NPI 1548212673 Susan Mccutcheon Optometrist · Monroe, MI NPI 1417994914 Reed Vision Associates, P.C. Optometrist · Monroe, MI NPI 1811914898 Reed Vision Associates PC Ophthalmology Physician · Monroe, MI NPI 1861636359 Mercy Eye Institute, LLC Ophthalmology Physician · Monroe, MI NPI 1972827558 Yasmyne Ronquillo Ophthalmology Physician · Monroe, MI NPI 1104223874 Promedica Central Physicians LLC Optometrist · Monroe, MI NPI 1417355223
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-16.