Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Demetra Makris Sifakis, DDS

Dentist in Madison, WI · enumerated 2007.

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

National Provider Identifier

1689883548

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Registry record

Entity type Individual (Type 1)

Name Dr. Demetra Makris Sifakis

Credential DDS

Sex Female

Practice address 3434 E. Washington Ave., Madison, WI, 53704

Phone (608) 443-5550

Fax (608) 443-5554

Enumeration date May 21, 2007

Last updated in NPPES Nov 9, 2011

Taxonomy & licenses

122300000X Dentist Dental Providers · License 54486 (CA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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.

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Frequently asked questions

What specialty is Demetra Sifakis?

Demetra Sifakis 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.

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Errin Pfeifer General Practice Dentistry · Madison, WI NPI 1467425975 Sarah Kruger Nurse Practitioner · Madison, WI NPI 1699723080 Roy Baird General Practice Dentistry · Madison, WI NPI 1851406722 Walter Thomas General Practice Dentistry · Madison, WI NPI 1649378217 Kevin Fehr Family Medicine Physician · Madison, WI NPI 1245337310 Access Community Health Centers, Inc. Federally Qualified Health Center (FQHC) · Madison, WI NPI 1417055617 Regina Dunst Pediatric Nurse Practitioner · Madison, WI NPI 1326106493 Sheila Wilson Dental Hygienist · Madison, WI NPI 1871656843

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-09.