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CASSANDRA HING-JEN SUNG M.D.
NPI 1346531787
Pediatrics - Pediatric Cardiology in Madison, WI

Active since April 19, 2011PECOS Enrolled
700 S PARK ST STE A, MADISON, WI 53715(608) 260-2900(608) 260-2957 Get Directions Write a Review

NPPES record last updated: April 3, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 3, 2024, Jun 7, 2021, Feb 11, 2019 and 2 more (5 updates tracked since 2017).

About Cassandra Hing-jen Sung M.d. NPPES

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

CASSANDRA HING-JEN SUNG M.D. (NPI 1346531787) is an individual pediatric cardiology provider in Madison, Wisconsin, licensed in California (A122875) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS and maintains a secondary practice location in Monroe.

NPPES Registry Identity

NPI1346531787
Entity TypeIndividualFemale
Primary Taxonomy2080P0202X
Provider Legal NameCASSANDRA HING-JEN SUNGCredential: M.D.
Location Address700 S PARK ST STE AMadison, WI 53715-1830
Mailing Address700 S Park St Ste AMadison, WI 53715-1830 · (608) 260-2900 · Fax (608) 260-2957
Phone(608) 260-2900
Fax(608) 260-2957
Sole ProprietorNo
Enumeration DateApril 19, 2011
Last NPPES UpdateApril 3, 20245 updates tracked since enumeration
NPPES CertifiedApril 3, 2024
✔ NPI 1346531787 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0202X
Licenses✔ Licensed in CA · A122875✔ Licensed in WI · 74946-20
Definition
A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.
700 S PARK ST STE A, Madison, WI 53715
Open in Google Maps ↗

Secondary Practice Location 1

Location 1515 22nd AveMonroe, WI 53566-1569 · Phone (608) 324-1000

Other Identifiers 1

Medicaid1346531787WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Dean Health Plan, Network Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Cassandra Hing-jen Sung M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

2

Medicare enrollment records show Cassandra Sung reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dean Health Systems, Inc
0.4 mi
Allergy & Immunology
1211 FISH HATCHERY RD
Madison, WI 53715
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,377 clinicians in this Medicare group
NPI 1053358846 (608) 252-8000
The Monroe Clinic, Inc.
33 mi
Specialist
515 22ND AVE
Monroe, WI 53566
  • Reassigned Medicare billing, Wisconsin enrollment
  • 376 clinicians in this Medicare group
NPI 1386720548 (608) 324-2770

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

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.

MR. ARUN X SWAMINATHAN M.B.B.S.
Psychiatry & Neurology (Neurology)
700 S PARK ST STE A
MADISON, WI 53715
Dane County (608) 260-2900
DR. MATTHEW K RONCK M.D.
Psychiatry & Neurology (Neurology)
700 S PARK ST STE A
MADISON, WI 53715
Dane County (608) 260-2900
DR. MELISSA MCLEAN APNP
Nurse Practitioner
700 S PARK ST STE A
MADISON, WI 53715
Dane County (608) 260-2900
ISABELLE NYTES PA-C
Physician Assistant
700 S PARK ST STE A
MADISON, WI 53715
Dane County (608) 260-2900
DANIEL W. ORYALL PA-C
Physician Assistant
700 S PARK ST STE A
MADISON, WI 53715
Dane County (608) 260-6000
JACLYN S BOARDMAN RD
Dietitian, Registered
700 S PARK ST STE A
MADISON, WI 53715
Dane County (608) 260-2900
DORIS KIM MD
Surgery
700 S PARK ST STE A
MADISON, WI 53715
Dane County (608) 260-2900
QUADE R WIEGEL PA-C
Physician Assistant
700 S PARK ST STE A
MADISON, WI 53715
Dane County (608) 260-2900

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 Cassandra Sung's NPI number?

The NPI number for Cassandra Sung is 1346531787. It was assigned to this individual provider in the NPPES registry on April 19, 2011.

Where is Cassandra Sung located?

Cassandra Sung practices at 700 S Park St Ste A, Madison, WI 53715. The listed phone number is (608) 260-2900.

What is Cassandra Sung's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is Cassandra Sung enrolled in Medicare?

Yes. Cassandra Sung is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Cassandra Sung's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cassandra Sung reassigns Medicare benefits to 2 organizations: Dean Health Systems, Inc (Madison, WI) and The Monroe Clinic, Inc. (Monroe, WI). 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 Cassandra Sung's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Cassandra Sung accept?

Health plans from Anthem Blue Cross and Blue Shield, Dean Health Plan, Network Health and Quartz list Cassandra Sung 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.

When was this NPI record last updated?

The NPPES record for Cassandra Sung was last updated on April 3, 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.