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

Hai P Bui, MD

Internal Medicine Physician in Lakewood, CO · enumerated 2006.

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

National Provider Identifier

1316965536

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Registry record

Entity type Individual (Type 1)

Name Hai P Bui

Credential MD

Sex Male

Practice address Lakewood, CO, 80214

Phone (303) 238-1488

Fax (303) 238-1459

Enumeration date Jul 17, 2006

Last updated in NPPES Jun 29, 2020

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 33410 (CO) Primary

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

Other identifiers

Identifier	Type	State	Issuer
01334101	Medicaid	CO	-

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

What specialty is Hai Bui?

Hai Bui is registered in NPPES with the primary taxonomy of Internal Medicine 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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Lakewood Medical Center Corporation Health Maintenance Organization · Lakewood, CO NPI 1124450366 Anhtuan Pham Addiction (Substance Use Disorder) Counselor · Lakewood, CO NPI 1144654831 Bui Family Care Inc Assisted Living Facility · Lakewood, CO NPI 1821622283 Mq Long Term Care Agency In Home Supportive Care Agency · Lakewood, CO NPI 1629602933 Katelyn Hansen Medical Physician Assistant · Lakewood, CO NPI 1023721198 Hien Nguyen Geriatric Medicine (Internal Medicine) Physician · Lakewood, CO NPI 1336901222

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-29.