Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Mark M Alles, O.D.
Optometrist in Joliet, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1366535528
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Registry record
Entity type Individual (Type 1)
Name Mr. Mark M Alles
Credential O.D.
Sex Male
Practice address 963 N. 129th Infantry Dr., Suite 110, Joliet, IL, 60435
Phone (815) 725-9377
Fax (815) 725-9358
Enumeration date Oct 2, 2006
Last updated in NPPES Aug 16, 2018
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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.
Frequently asked questions
What is the NPI number for Mark Alles?
The National Provider Identifier (NPI) for Mark Alles is 1366535528, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Alles practice?
The practice location on file with NPPES is in Joliet, IL. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Eligijus P. Lelis M.D. & Associates, S.C. Ophthalmology Physician · Joliet, IL NPI 1700830957 Eligijus Lelis Ophthalmology Physician · Joliet, IL NPI 1043264252 Majid Rassouli Ophthalmology Physician · Joliet, IL NPI 1891749081 Samra Hashmi Ophthalmology Physician · Joliet, IL NPI 1790732147 Lisa Grantman Occupational Therapist · Joliet, IL NPI 1508809187 Mukund Komanduri MD Sc Orthopaedic Surgery Physician · Joliet, IL NPI 1801903497 Eligijus P Lelis MD & Associates, Sc Durable Medical Equipment & Medical Supplies · Joliet, IL NPI 1871628230 Eligijus P Lelis MD & Associates, Sc Durable Medical Equipment & Medical Supplies · Joliet, IL NPI 1184750465
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-16.