Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Tammy Merriman Kost, RN

Q: What is the NPI number for Tammy Kost?

The National Provider Identifier (NPI) for Tammy Kost is 1649768102, a Type 1 (individual) record in the CMS NPPES registry.

Registered Nurse in White Plains, MD · enumerated 2018.

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

National Provider Identifier

1649768102

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Registry record

Entity type Individual (Type 1)

Name Mrs. Tammy Merriman Kost

Credential RN

Sex Female

Practice address 4545 Crain Hwy, White Plains, MD, 20695

Phone (301) 609-6900

Enumeration date Apr 30, 2018

Last updated in NPPES Apr 30, 2018

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License R180842 (MD) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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 is the NPI number for Tammy Kost?

The National Provider Identifier (NPI) for Tammy Kost is 1649768102, a Type 1 (individual) record in the CMS NPPES registry.

Where does Tammy Kost practice?

The practice location on file with NPPES is in White Plains, MD. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-30.