NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nisreen Khazaal, MD

Internal Medicine Physician in Boulder, CO · enumerated 2007.

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

National Provider Identifier

1437367786

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Nisreen Khazaal
Credential MD
Sex Female
Practice address 1900 Wardenburg Dr, Boulder, CO, 80309
Phone (303) 492-5101
Fax (303) 492-6861
Enumeration date May 18, 2007
Last updated in NPPES May 30, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 35094924 (OH) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License DR.0057623 (CO) Primary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 046944 (CT) Secondary
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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Nisreen Khazaal?
The National Provider Identifier (NPI) for Nisreen Khazaal is 1437367786, a Type 1 (individual) record in the CMS NPPES registry.
Where does Nisreen Khazaal practice?
The practice location on file with NPPES is in Boulder, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-30.