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

Dr. Kristopher M. Day, MD, FACS

Surgery Physician in Bellevue, WA · enumerated 2010 · practices at Kristopher M Day Pllc.

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

National Provider Identifier

1790002350

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Registry record

Entity type Individual (Type 1)

Name Dr. Kristopher M. Day

Credential MD, FACS

Sex Male

Practice address Bellevue, WA, 98004

Phone (425) 818-8991

Fax (425) 455-0045

Enumeration date Apr 22, 2010

Last updated in NPPES Apr 30, 2024

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

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 29120 (WV) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD-47359 (IA) Secondary

2086S0105X Surgery of the Hand (Surgery) Physician Allopathic & Osteopathic Physicians · License MD-47359 (IA) Secondary

2086S0122X Plastic and Reconstructive Surgery Physician Allopathic & Osteopathic Physicians · License 29120 (WV) Secondary

2086S0122X Plastic and Reconstructive Surgery Physician Allopathic & Osteopathic Physicians · License MD-47359 (IA) Secondary

2086S0122X Plastic and Reconstructive Surgery Physician Allopathic & Osteopathic Physicians · License 61182693 (WA) Secondary

2086S0122X Plastic and Reconstructive Surgery Physician Allopathic & Osteopathic Physicians · License MD61293744 (WA) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 61182693 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

What specialty is Kristopher Day?

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

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.

Other providers at this practice address

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Kristopher M Day Pllc Plastic and Reconstructive Surgery Physician · Bellevue, WA NPI 1720756687

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-30.