DR. HANK HAW SUN MD
NPI 1427493220
Anesthesiology in Orinda, CA
About Dr. Hank Haw Sun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HANK HAW SUN MD (NPI 1427493220) is an individual anesthesiology provider in Orinda, California, licensed in California (A155186) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS and is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses 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. Hank Haw Sun 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
12Medicare enrollment records show Hank Sun reassigns Medicare billing to 12 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Martinez, CA 94553
- Reassigned Medicare billing, California enrollment
- 530 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 833 clinicians in this Medicare group
Oakland, CA 94602
- Reassigned Medicare billing, California enrollment
- 900 clinicians in this Medicare group
Fairfield, CA 94534
- Reassigned Medicare billing, California enrollment
- 3,056 clinicians in this Medicare group
Stockton, CA 95202
- Reassigned Medicare billing, California enrollment
- 534 clinicians in this Medicare group
French Camp, CA 95231
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Anesthesia Services Of San Joaquin PC
- 217 clinicians in this Medicare group
French Camp, CA 95231
- Reassigned Medicare billing, California enrollment
- 512 clinicians in this Medicare group
Manteca, CA 95336
- Reassigned Medicare billing, California enrollment
- 488 clinicians in this Medicare group
Fresno, CA 93720
- Reassigned Medicare billing, California enrollment
- 293 clinicians in this Medicare group
Moorpark, CA 93021
- Reassigned Medicare billing, California enrollment
- 44 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 2
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.
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.
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 Hank Sun's NPI number?
The NPI number for Hank Sun is 1427493220. It was assigned to this individual provider in the NPPES registry on May 7, 2013.
Where is Hank Sun located?
Hank Sun practices at 16 El Verano, Orinda, CA 94563. The listed phone number is (720) 320-5826.
What is Hank Sun's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Hank Sun enrolled in Medicare?
Yes. Hank Sun 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 Hank Sun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hank Sun reassigns Medicare benefits to 12 organizations: Contra Costa County (Martinez, CA), Cep America - Anesthesia, PC (Walnut Creek, CA), Alameda Health System (Oakland, CA), Sutter Valley Medical Foundation (Fairfield, CA), County Of San Joaquin (Stockton, CA) and 7 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 Hank Sun'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 Hank Sun was last updated on June 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Hank Haw Sun, MD · NPI 1427493220
Anesthesiology physician in Orinda, California. Individual provider, active in the CMS NPPES registry since May 7, 2013.
## Identity
- **NPI:** 1427493220 (Entity type: Individual)
- **Enumerated:** May 7, 2013
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A155186 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 16 EL VERANO, Orinda, CA 94563
- **Phone:** (720) 320-5826
## 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:** 12 organizations under Medicare reassignment (form CMS-855R): Contra Costa County (NPI 1750509162, Martinez, CA); Cep America - Anesthesia, PC (NPI 1790401438, Walnut Creek, CA); Alameda Health System (NPI 1740332931, Oakland, CA); Sutter Valley Medical Foundation (NPI 1184859894, Fairfield, CA); County Of San Joaquin (NPI 1083955801, Stockton, CA); and 7 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** June 5, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1427493220) · Data from the CMS NPPES public registry.