DR. EKAI HSU MD
NPI 1912175340
Surgery in Carmel, CA
About Dr. Ekai Hsu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. EKAI HSU MD (NPI 1912175340) is an individual surgery provider in Carmel, California, licensed in California (A103079) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (2003).
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
Dr. Ekai Hsu 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
7Medicare enrollment records show Ekai Hsu reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hollister, CA 95023
- Reassigned Medicare billing, California enrollment
- 73 clinicians in this Medicare group
Gilroy, CA 95020
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1588721500 (California), NPI 1629301346 (California)
- 2,460 clinicians in this Medicare group
Los Gatos, CA 95032
- Reassigned Medicare billing, California enrollment
San Jose, CA 95124
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1013950807 (California)
- 393 clinicians in this Medicare group
Los Banos, CA 93635
- Reassigned Medicare billing, California enrollment
- 91 clinicians in this Medicare group
Sacramento, CA 95816
- Reassigned Medicare billing, California enrollment
- 266 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 1,437 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 5
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 93923 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Ekai Hsu's NPI number?
The NPI number for Ekai Hsu is 1912175340. It was assigned to this individual provider in the NPPES registry on February 19, 2008.
Where is Ekai Hsu located?
Ekai Hsu practices at 3845 Via Nona Marie Unit 221461, Carmel, CA 93923. The listed phone number is (831) 298-0021.
What is Ekai Hsu's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Ekai Hsu enrolled in Medicare?
Yes. Ekai Hsu 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 Ekai Hsu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ekai Hsu reassigns Medicare benefits to 7 organizations: Hazel Hawkins Memorial Hospital (Hollister, CA), County Of Santa Clara (Gilroy, CA), California Surgical Service (Los Gatos, CA), Sutter Bay Medical Foundation (San Jose, CA), Surgical Affiliates Of California (Los Banos, CA) and 2 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 Ekai Hsu'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 Ekai Hsu was last updated on July 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Ekai Hsu, MD · NPI 1912175340
Surgery physician in Carmel, California. Individual provider, active in the CMS NPPES registry since February 19, 2008.
## Identity
- **NPI:** 1912175340 (Entity type: Individual)
- **Enumerated:** February 19, 2008
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** A103079 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3845 VIA NONA MARIE UNIT 221461, Carmel, CA 93923-8601
- **Phone:** (831) 298-0021
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Hazel Hawkins Memorial Hospital (NPI 1275578817, Hollister, CA); County Of Santa Clara (NPI 1922093533, Gilroy, CA); California Surgical Service (NPI 1538399365, Los Gatos, CA); Sutter Bay Medical Foundation (NPI 1043654486, San Jose, CA); Surgical Affiliates Of California (NPI 1932440781, Los Banos, CA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tufts University School Of Medicine, class of 2003
## Record status
- **NPPES last updated:** July 27, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1912175340) · Data from the CMS NPPES public registry.