MICHAEL H. LUM MD
NPI 1124104633
Obstetrics & Gynecology in San Jose, CA
About Michael H. Lum Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL H. LUM MD (NPI 1124104633) is an individual obstetrics & gynecology provider in San Jose, California, licensed in California (A74288) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Medical College Of Pennsylvania (1997).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Michael H. Lum Md 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 Reassignment
Medicare enrollment records show Michael Lum reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95119 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Michael Lum's NPI number?
The NPI number for Michael Lum is 1124104633. It was assigned to this individual provider in the NPPES registry on October 27, 2006.
Where is Michael Lum located?
Michael Lum practices at 260 International Cir, San Jose, CA 95119. The listed phone number is (408) 972-7000.
What is Michael Lum's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Michael Lum enrolled in Medicare?
Yes. Michael 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 organization bills Medicare for Michael Lum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Lum reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, CA). The 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 Michael Lum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Michael Lum was last updated on December 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.
# Michael H. Lum, MD · NPI 1124104633
Obstetrics & Gynecology physician in San Jose, California. Individual provider, active in the CMS NPPES registry since October 27, 2006.
## Identity
- **NPI:** 1124104633 (Entity type: Individual)
- **Enumerated:** October 27, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** A74288 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 260 INTERNATIONAL CIR, San Jose, CA 95119-1130
- **Phone:** (408) 972-7000
## 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:** Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Pennsylvania, class of 1997
## Record status
- **NPPES last updated:** December 20, 2021
- **Other identifiers:** Medicaid 00A742880 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1124104633) · Data from the CMS NPPES public registry.