GINA HEYUE SUN MD
NPI 1043770662
Anesthesiology in Boston, MA
About Gina Heyue Sun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GINA HEYUE SUN MD (NPI 1043770662) is an individual anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (1023086) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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
Gina Heyue 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
7Medicare enrollment records show Gina Sun reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
San Francisco, CA 94108
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: City & County Of San Francisco
- 1,573 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 842 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 723 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
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MAOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Gina Sun's NPI number?
The NPI number for Gina Sun is 1043770662. It was assigned to this individual provider in the NPPES registry on March 20, 2019.
Where is Gina Sun located?
Gina Sun practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 726-3030.
What is Gina Sun's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Gina Sun enrolled in Medicare?
Yes. Gina 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 Gina Sun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gina Sun reassigns Medicare benefits to 7 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA), City And Couny Of San Francisco (San Francisco, CA), University Of California Sfgh Medical Group (San Francisco, CA), University Of California San Francisco (San Francisco, 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 Gina Sun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gina Sun accept?
Health plans from Taro Health list Gina Sun as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Gina Sun affiliated with any hospitals?
According to CMS data, Gina Sun is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Gina Sun was last updated on September 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.
# Gina Heyue Sun, MD · NPI 1043770662
Anesthesiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since March 20, 2019.
## Identity
- **NPI:** 1043770662 (Entity type: Individual)
- **Enumerated:** March 20, 2019
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 1023086 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, Boston, MA 02114-2696
- **Phone:** (617) 726-3030
## 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): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); City And Couny Of San Francisco (NPI 1164613832, San Francisco, CA); University Of California Sfgh Medical Group (NPI 1174598296, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** September 30, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1043770662) · Data from the CMS NPPES public registry.