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KAIWEN SUN MD
NPI 1255891479
Internal Medicine - Cardiovascular Disease in Chula Vista, CA

Active since March 22, 2019PECOS EnrolledAccepts Medicare Assignment
765 MEDICAL CENTER CT STE 211, CHULA VISTA, CA 91911(619) 616-2100 Get Directions Write a Review

NPPES record last updated: August 4, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 4, 2026, Jul 27, 2026, Feb 10, 2025 and 1 more (4 updates tracked since 2019).

About Kaiwen Sun Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KAIWEN SUN MD (NPI 1255891479) is an individual cardiovascular disease provider in Chula Vista, California, licensed in California (A177099) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Nebraska College Of Medicine (2019).

NPPES Registry Identity

NPI1255891479
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameKAIWEN SUNCredential: MD
Location Address765 MEDICAL CENTER CT STE 211Chula Vista, CA 91911-6600
Mailing Address765 Medical Center Ct Ste 211Chula Vista, CA 91911-6600
Phone(619) 616-2100
Sole ProprietorNo
Medical School CMSUniversity Of Nebraska College Of MedicineGraduated 2019
Enumeration DateMarch 22, 2019
Last NPPES UpdateAugust 4, 20264 updates tracked since enumeration
NPPES CertifiedAugust 4, 2026
✔ NPI 1255891479 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in CA · A177099
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
765 MEDICAL CENTER CT STE 211, Chula Vista, CA 91911
Open in Google Maps ↗

Secondary Practice Locations 2

Location 14725 Market StSan Diego, CA 92102-4715 · Phone (619) 515-2560
Location 21000 Vale Terrace DrVista, CA 92084-5218 · Phone (844) 308-5003

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

Kaiwen 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.

PECOS PAC ID8224446513
PECOS Enrollment IDI20220720000779
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

7

Medicare enrollment records show Kaiwen Sun reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cardiovascular Institute Of San Diego Inc
Same address
Cardiovascular Disease
765 MEDICAL CENTER CT STE 211
Chula Vista, CA 91911
  • Reassigned Medicare billing, California enrollment
  • 29 clinicians in this Medicare group
NPI 1558518753 (619) 616-2100
Family Health Centers Of San Diego Inc
0.8 mi
Federally Qualified Health Center (FQHC)
352 L ST
Chula Vista, CA 91911
  • Reassigned Medicare billing, California enrollment
  • 1,100 clinicians in this Medicare group
NPI 1083959464 (619) 515-2500
Image One A Medical Corp
16 mi
Radiology, Mammography
8707 COMPLEX DRIVE
San Diego, CA 92123
  • Reassigned Medicare billing, California enrollment
  • 8 clinicians in this Medicare group
NPI 1093585036 (619) 616-2100
Regents Of The University Of California
469 mi
Endocrinology, Diabetes & Metabolism
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 2,112 clinicians in this Medicare group
NPI 1376613943 (415) 353-2350
University Of California San Francisco
469 mi
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
469 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808
Heart And Vascular Centers Of America
519 mi
Cardiovascular Disease
1233 PLUMAS ST
Yuba City, CA 95991
  • Reassigned Medicare billing, California enrollment
  • 20 clinicians in this Medicare group
NPI 1003547340 (530) 715-2900

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91911 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$140.22 typical visit price
range $62.10 – $184.71
Typical copayment $35.05 (range $15.52 – $46.17)
Most-billed visit code 99204
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MILIND DAKSHESH PARIKH D.O.
Internal Medicine (Cardiovascular Disease)
765 MEDICAL CENTER CT STE 211
CHULA VISTA, CA 91911
San Diego County (619) 616-2100
SHANNON POLLEY
Physician Assistant
765 MEDICAL CENTER CT STE 211
CHULA VISTA, CA 91911
San Diego County (617) 636-0405
KENDALL FRYER PA
Physician Assistant
765 MEDICAL CENTER CT STE 211
CHULA VISTA, CA 91911
San Diego County (616) 619-2100
ALAN KURIAKOSE JOHN M.D.
Internal Medicine (Interventional Cardiology)
765 MEDICAL CENTER CT STE 211
CHULA VISTA, CA 91911
San Diego County (619) 616-2100
DAPHNE LAUREN BINTO PA-C
Physician Assistant
765 MEDICAL CENTER CT STE 211
CHULA VISTA, CA 91911
San Diego County (508) 373-5820
DR. STEVEN K CARLSON
Internal Medicine (Clinical Cardiac Electrophysiology)
765 MEDICAL CENTER CT STE 211
CHULA VISTA, CA 91911
San Diego County (310) 319-4698
DR. AKILESH HONASOGE M.D.
Internal Medicine (Interventional Cardiology)
765 MEDICAL CENTER CT STE 211
CHULA VISTA, CA 91911
San Diego County (619) 616-2100
MANOLO RUBIO GARCIA MD
Internal Medicine (Interventional Cardiology)
765 MEDICAL CENTER CT STE 211
CHULA VISTA, CA 91911
San Diego County (619) 616-2100

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 Kaiwen Sun's NPI number?

The NPI number for Kaiwen Sun is 1255891479. It was assigned to this individual provider in the NPPES registry on March 22, 2019.

Where is Kaiwen Sun located?

Kaiwen Sun practices at 765 Medical Center Ct Ste 211, Chula Vista, CA 91911. The listed phone number is (619) 616-2100.

What is Kaiwen Sun's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Kaiwen Sun enrolled in Medicare?

Yes. Kaiwen 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 Kaiwen Sun's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kaiwen Sun reassigns Medicare benefits to 7 organizations: Cardiovascular Institute Of San Diego Inc (Chula Vista, CA), Family Health Centers Of San Diego Inc (Chula Vista, CA), Image One A Medical Corp (San Diego, CA), Regents Of The University Of California (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 Kaiwen 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 Kaiwen Sun was last updated on August 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.