NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Monica E Lee, M.D.

Hematology & Oncology Physician in Fullerton, CA · enumerated 2007.

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

National Provider Identifier

1215129309

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Monica E Lee
Credential M.D.
Sex Female
Practice address 2151 N Harbor Blvd Ste 3200, Fullerton, CA, 92835
Enumeration date Aug 14, 2007
Last updated in NPPES Oct 4, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A101114 (CA) Secondary
207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License A101114 (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Monica Lee practice?
The practice location on file with NPPES is in Fullerton, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Monica Lee?
The National Provider Identifier (NPI) for Monica Lee is 1215129309, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-10-04.