THINN THINN WAH MD
NPI 1023418878
Internal Medicine in Palmdale, CA
About Thinn Thinn Wah Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THINN THINN WAH MD (NPI 1023418878) is an individual internal medicine provider in Palmdale, California, licensed in California (A134453) and active in the NPI registry since August 2014. She is enrolled in Medicare PECOS and is a graduate of Other (2007).
NPPES Registry Identity
Specialties & Licenses
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
Thinn Thinn Wah 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 Reassignments
9Medicare enrollment records show Thinn Wah reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palmdale, CA 93551
- Reassigned Medicare billing, California enrollment
- 840 clinicians in this Medicare group
Lancaster, CA 93534
- Reassigned Medicare billing, California enrollment
- 39 clinicians in this Medicare group
Arcadia, CA 91007
- Reassigned Medicare billing, California enrollment
- 66 clinicians in this Medicare group
West Hollywood, CA 90048
- Reassigned Medicare billing, California enrollment
- 175 clinicians in this Medicare group
Los Angeles, CA 90015
- Reassigned Medicare billing, California enrollment
- 2,052 clinicians in this Medicare group
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 914 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 clinicians in this Medicare group
Wildomar, CA 92595
- Reassigned Medicare billing, California enrollment
- 69 clinicians in this Medicare group
Merced, CA 95340
- Reassigned Medicare billing, California enrollment
- 126 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 4
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 93551 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
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
PALMDALE, CA 93551
PALMDALE, CA 93551
PALMDALE, CA 93551
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 Thinn Wah's NPI number?
The NPI number for Thinn Wah is 1023418878. It was assigned to this individual provider in the NPPES registry on August 29, 2014.
Where is Thinn Wah located?
Thinn Wah practices at 38600 Medical Center Dr, Palmdale, CA 93551. The listed phone number is (661) 382-6140.
What is Thinn Wah's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Thinn Wah enrolled in Medicare?
Yes. Thinn Wah 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 Thinn Wah's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thinn Wah reassigns Medicare benefits to 9 organizations: Pih Health Physicians (Palmdale, CA), Horizon Multicare Group Inc (Lancaster, CA), Arcadia Hospitalist Medical Group, Inc. (Arcadia, CA), Kansal Inc (West Hollywood, CA), Healthcare Partners Affiliates Medical Group (Los Angeles, CA) and 4 more organizations, 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 Thinn Wah'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 Thinn Wah was last updated on June 30, 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.
# Thinn Thinn Wah, MD · NPI 1023418878
Internal Medicine physician in Palmdale, California. Individual provider, active in the CMS NPPES registry since August 29, 2014.
## Identity
- **NPI:** 1023418878 (Entity type: Individual)
- **Enumerated:** August 29, 2014
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A134453 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 38600 MEDICAL CENTER DR, Palmdale, CA 93551-4483
- **Phone:** (661) 382-6140
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Pih Health Physicians (NPI 1487310280, Palmdale, CA); Horizon Multicare Group Inc (NPI 1598130569, Lancaster, CA); Arcadia Hospitalist Medical Group, Inc. (NPI 1114365269, Arcadia, CA); Kansal Inc (NPI 1043510183, West Hollywood, CA); Healthcare Partners Affiliates Medical Group (NPI 1659312593, Los Angeles, CA); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** June 30, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1023418878) · Data from the CMS NPPES public registry.