Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Maria Sinis Contos, D.M.D.

Dentist in Chicago, IL · enumerated 2010.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1992014716

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Registry record

Entity type Individual (Type 1)

Name Dr. Maria Sinis Contos

Credential D.M.D.

Sex Female

Practice address 6428 N California Ave, Chicago, IL, 60645

Phone (773) 973-0531

Fax (773) 262-9850

Enumeration date Sep 28, 2010

Last updated in NPPES Jun 3, 2016

Taxonomy & licenses

122300000X Dentist Dental Providers · License 019028502 (IL) Primary

122300000X Dentist Dental Providers · License S520540826110 (FL) Secondary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Maria Contos?

Maria Contos is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Aristides Contos General Practice Dentistry · Chicago, IL NPI 1578512489 Peter Contos General Practice Dentistry · Chicago, IL NPI 1477606234 Maria Sinis Dmd Ltd Dentist · Chicago, IL NPI 1669782736 Martha Bockian Clinical Neuropsychologist · Chicago, IL NPI 1912342338 Contos Smile Center, Ltd. General Practice Dentistry · Chicago, IL NPI 1609250851 Positively Focused, LLC Clinical Neuropsychologist · Chicago, IL NPI 1396391249 Wisconsin Mobile Dental Care LLC Dental Clinic/Center · Chicago, IL NPI 1760192736 Nicole Hartmann Dental Hygienist · Chicago, IL NPI 1689471203

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-06-03.