Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Kerstin J Cmok, APRN

Adult Health Nurse Practitioner in Arlington, MA · enumerated 2009.

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

National Provider Identifier

1548599491

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Registry record

Entity type Individual (Type 1)

Name Ms. Kerstin J Cmok

Credential APRN

Sex Female

Practice address 22 Mill St, Ste 310, Arlington, MA, 02476

Phone (781) 643-0500

Fax (781) 648-8509

Enumeration date Dec 23, 2009

Last updated in NPPES Dec 23, 2009

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2263034 (MA) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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

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.

What specialty is Kerstin Cmok?

Kerstin Cmok is registered in NPPES with the primary taxonomy of Adult Health Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-23.