NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

C. Ann Mashchak, M.D.

Specialist in Ooltewah, TN · enumerated 2008 · authorized official Clarissa Mashchak, Owner/Operator.

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

National Provider Identifier

1457518227

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name C. Ann Mashchak, M.D.
Other name <Unavail>
Practice address 9413 Apison Pike, Suite 124, Ooltewah, TN, 37363
Fax (423) 624-0773
Enumeration date May 20, 2008
Last updated in NPPES May 21, 2008

Taxonomy & classification

174400000X Specialist Other Service Providers Primary

Authorized official

Name Clarissa Mashchak
Title Owner/Operator

Other identifiers

Identifier Type State Issuer
2004710 Other TN BLUE CROSS BLUE SHIELD
3032077 Medicaid TN -

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-05-21. Verify at npiregistry.cms.hhs.gov.
Where is C. Ann Mashchak, M.D. located?
The practice location on file with NPPES is in Ooltewah, TN.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-21.