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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Crystal A Mark, FNP, DC

Family Nurse Practitioner in The Woodlands, TX · enumerated 2006 · practices at Dr. Crystal Mark, Inc..

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

National Provider Identifier

1528176088

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Registry record

Entity type Individual (Type 1)
Name Ms. Crystal A Mark
Credential FNP, DC
Sex Female
Practice address 27130 Glen Loch Dr, The Woodlands, TX, 77381
Fax (888) 578-2659
Enumeration date Aug 25, 2006
Last updated in NPPES Jul 16, 2018

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 8310 (TX) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP137953 (TX) Primary
FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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

How do I verify Crystal Mark's NPI record?
Cross-check NPI 1528176088 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1528176088 active?
Yes, as of the latest NPPES snapshot, NPI 1528176088 is active (record last updated 2018-07-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-16.