NPI Portal NPI Lookup & Verification

Dr. Robert Patrick Lum, M.D.

Dr. Robert Patrick Lum is a Radiation Oncology Physician provider (Radiology) practicing in Oxnard, CA, registered in the NPPES registry with NPI 1770589707 since 2005. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1770589707
Entity type Individual (Type 1)
Name Dr. Robert Patrick Lum
Credential M.D.
Sex Male
Practice address Oxnard, CA, 93036
Phone 8054852824
Fax 8054852774
Enumeration date 2005-06-23
Last updated in NPPES 2023-08-16

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

Taxonomy & licenses

Taxonomy code Specialty Primary License State
174400000X Specialist Secondary A46608 CA
2085R0001X Radiation Oncology Physician Primary A46608 CA

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
00A460080 Medicaid CA
Copy-ready billing details
Provider: Robert Lum, M.D.
NPI: 1770589707
Taxonomy: 2085R0001X (Radiation Oncology Physician)
Address: Oxnard, CA, 93036

Other providers at this practice address

NPI Name Type Specialty Location
1972586071 Superior Mobility, Inc. Organization Customized Equipment (DME) Oxnard, CA
1689658064 Anne Ireland-Gill Individual Specialist Oxnard, CA
1033163621 Renewed Hope Radiation Oncology, Inc. Organization Radiation Oncology Clinic/Center Oxnard, CA
1740235639 Mack Toyama Individual Chiropractor Oxnard, CA

Verify this record

Cross-check NPI 1770589707 against the authoritative CMS record: view Dr. Robert Patrick Lum on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

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.
What specialty is Robert Lum?
Robert Lum is registered in NPPES with the primary taxonomy of Radiation Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-08-16.