NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Justin Page Calvin, DNP, FNP-C

Nurse Practitioner in Concord, CA · enumerated 2017.

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

National Provider Identifier

1417494055

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Registry record

Entity type Individual (Type 1)
Name Ms. Justin Page Calvin
Credential DNP, FNP-C
Sex Female
Practice address Concord, CA, 94520
Phone (888) 663-6331
Fax (415) 252-7176
Enumeration date Jan 20, 2017
Last updated in NPPES Aug 2, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 6632461-3102 (UT) Secondary
163W00000X Registered Nurse Nursing Service Providers · License 115158 (AK) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 115159 (AK) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95025276 (CA) Primary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95025276 (CA) Secondary
DNP · Doctor of Nursing Practice: A clinical doctorate for advanced practice nurses. About the DNP 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 NPI 1417494055 active?
Yes, as of the latest NPPES snapshot, NPI 1417494055 is active (record last updated 2024-08-02).
How do I verify Justin Calvin's NPI record?
Cross-check NPI 1417494055 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-02.