DARREN PAKYING LUM M.D.
NPI 1528011806
Radiology - Diagnostic Radiology in Stanford, CA
About Darren Pakying Lum M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DARREN PAKYING LUM M.D. (NPI 1528011806) is an individual diagnostic radiology provider in Stanford, California, licensed in California (C194302) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with The Queens Medical Center, and maintains a secondary practice location in Honolulu.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Darren Pakying Lum M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Darren Lum reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Whittier, CA 90602
- Reassigned Medicare billing, California enrollment
- 84 clinicians in this Medicare group
Kamuela, HI 96743
- Reassigned Medicare billing, California and Hawaii enrollments
- Also billed through NPI 1124009584 (Hawaii)
- 47 clinicians in this Medicare group
Honolulu, HI 96813
- Reassigned Medicare billing, California and Hawaii enrollments
- 48 clinicians in this Medicare group
Honolulu, HI 96813
- Reassigned Medicare billing, Hawaii enrollment
- 25 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 11
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
The Queens Medical Center
Acute Care Hospitals · Honolulu, HIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94305 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Darren Lum's NPI number?
The NPI number for Darren Lum is 1528011806. It was assigned to this individual provider in the NPPES registry on May 18, 2006.
Where is Darren Lum located?
Darren Lum practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Darren Lum's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Darren Lum enrolled in Medicare?
Yes. Darren Lum is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Darren Lum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Darren Lum reassigns Medicare benefits to 6 organizations: Stanford Health Care (Stanford, CA), Lpch Medical Group Div Of Lucile (Palo Alto, CA), Lambert Radiology Medical Group, Inc (Whittier, CA), Queens North Hawaii Community Hospital (Kamuela, HI), Queens University Medical Group (Honolulu, HI) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Darren Lum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Darren Lum accept?
Health plans from Blue Cross and Blue Shield of Texas list Darren Lum as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Darren Lum affiliated with any hospitals?
According to CMS data, Darren Lum is affiliated with The Queens Medical Center.
When was this NPI record last updated?
The NPPES record for Darren Lum was last updated on March 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Darren Pakying Lum, M.D. · NPI 1528011806
Diagnostic Radiology physician in Stanford, California. Individual provider, active in the CMS NPPES registry since May 18, 2006.
## Identity
- **NPI:** 1528011806 (Entity type: Individual)
- **Enumerated:** May 18, 2006
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** C194302 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000 · **Fax:** (808) 536-3008
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Stanford Health Care (NPI 1437292927, Stanford, CA); Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA); Lambert Radiology Medical Group, Inc (NPI 1609826684, Whittier, CA); Queens North Hawaii Community Hospital (NPI 1477559029, Kamuela, HI); Queens University Medical Group (NPI 1891441382, Honolulu, HI); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2002
## Record status
- **NPPES last updated:** March 12, 2025
- **Other identifiers:** Other 0000276276 (HI); Other 0348749 (HI); Medicaid 1528011806 (MN); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1528011806) · Data from the CMS NPPES public registry.