Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Kristy L. Armstrong, PA

Physician Assistant in Troy, MI · enumerated 2015.

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

National Provider Identifier

1245601665

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Registry record

Entity type Individual (Type 1)

Name Ms. Kristy L. Armstrong

Credential PA

Sex Female

Practice address 4600 Investment Dr Ste 200, Troy, MI, 48098

Phone (248) 267-5050

Enumeration date Oct 12, 2015

Last updated in NPPES Jul 29, 2026

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 5601007510 (MI) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA 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 Kristy Armstrong?

Kristy Armstrong is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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William Devlin Cardiovascular Disease Physician · Troy, MI NPI 1871575860 Slobodan Djordjevic Physician Assistant · Troy, MI NPI 1790768802 Dena Fernandez Adult Health Nurse Practitioner · Troy, MI NPI 1467657536 Debra Goodall Nurse Practitioner · Troy, MI NPI 1659553782 Daniel Tim Interventional Cardiology Physician · Troy, MI NPI 1972990331 Lilian Paciorkowski Gerontology Clinical Nurse Specialist · Troy, MI NPI 1174055362 Talia Milicevic Physician Assistant · Troy, MI NPI 1184135691 Sarah Levin Acute Care Nurse Practitioner · Troy, MI NPI 1568930717

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-29.