NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Curtis Reiss Handler, M.D.

Diagnostic Radiology Physician in Rancho Cucamongo, CA · enumerated 2005.

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

National Provider Identifier

1649255290

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Curtis Reiss Handler
Credential M.D.
Sex Male
Practice address 8599 Haven Ave., Suite 300, Rancho Cucamongo, CA, 91730
Phone (909) 620-8180
Fax (909) 919-7288
Enumeration date Dec 7, 2005
Last updated in NPPES Mar 27, 2012

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License G34638 (CA) Primary
2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License G34638 (CA) Secondary
2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians · License G34638 (CA) Secondary
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
00G346380 Medicaid CA —
CG1263 Other CA MEDICARE RAILROAD

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 Curtis Handler?
Curtis Handler is registered in NPPES with the primary taxonomy of Diagnostic Radiology 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

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-27.