DR. LEO MENG-TAH SHUM M.D
NPI 1609061191
Internal Medicine - Critical Care Medicine in Pasadena, CA
About Dr. Leo Meng-tah Shum M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LEO MENG-TAH SHUM M.D (NPI 1609061191) is an individual critical care medicine provider in Pasadena, California, licensed in California (A121518) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS and is a graduate of University Of Pittsburgh School Of Medicine (2006).
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 2
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
Dr. Leo Meng-tah Shum 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
4Medicare enrollment records show Leo Shum reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pasadena, CA 91106
- Reassigned Medicare billing, California enrollment
- 32 clinicians in this Medicare group
Glendale, CA 91206
- Reassigned Medicare billing, California enrollment
- 2,584 clinicians in this Medicare group
Glendale, CA 91201
- Reassigned Medicare billing, California enrollment
- 19 clinicians in this Medicare group
Los Angeles, CA 90015
- Reassigned Medicare billing, California enrollment
- 51 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 8
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91106 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.
PASADENA, CA 91106
PASADENA, CA 91106
PASADENA, CA 91106
PASADENA, CA 91106
PASADENA, CA 91106
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 Leo Shum's NPI number?
The NPI number for Leo Shum is 1609061191. It was assigned to this individual provider in the NPPES registry on September 8, 2007.
Where is Leo Shum located?
Leo Shum practices at 959 E Walnut St Suite 120, Pasadena, CA 91106. The listed phone number is (626) 795-1831.
What is Leo Shum's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Leo Shum enrolled in Medicare?
Yes. Leo Shum 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 Leo Shum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leo Shum reassigns Medicare benefits to 4 organizations: Foothill Pulmonary & Critical Care Consultants Medical Group Inc. (Pasadena, CA), Faculty Physicians And Surgeons Of Llusm (Glendale, CA), Vista Critical Care Associates Inc (Glendale, CA) and Bel Air Critical Care Medical Group, Inc. (Los Angeles, CA). 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 Leo Shum'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 Leo Shum was last updated on September 7, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Dr. Leo Meng-Tah Shum, M.D · NPI 1609061191
Critical Care Medicine physician in Pasadena, California. Individual provider, active in the CMS NPPES registry since September 8, 2007.
## Identity
- **NPI:** 1609061191 (Entity type: Individual)
- **Enumerated:** September 8, 2007
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** A121518 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 959 E WALNUT ST, SUITE 120, Pasadena, CA 91106-1451
- **Phone:** (626) 795-1831 · **Fax:** (626) 795-2716
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Foothill Pulmonary & Critical Care Consultants Medical Group Inc. (NPI 1205862489, Pasadena, CA); Faculty Physicians And Surgeons Of Llusm (NPI 1508255175, Glendale, CA); Vista Critical Care Associates Inc (NPI 1942971189, Glendale, CA); Bel Air Critical Care Medical Group, Inc. (NPI 1396268041, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Pittsburgh School Of Medicine, class of 2006
## Record status
- **NPPES last updated:** September 7, 2017
- **Other identifiers:** Medicare UPIN GF984Z (CA); Other W481
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Source: [NPI Profile](https://npiprofile.com/npi/1609061191) · Data from the CMS NPPES public registry.