Arun Kalyanasundaram, M.D.
NPI 1972562346 · Interventional Cardiology Physician · Marshfield, WI
Enrolled with Medicare as Practitioner - Other (physician) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Arun Kalyanasundaram, M.D. is a Interventional Cardiology Physician provider in Marshfield, WI (NPI 1972562346).
Provider details
- NPI number
- 1972562346
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 76225 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$8,511 across 7 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-22
- Last updated
- 2023-03-14
- Certified
- 2023-03-14
Frequently asked questions
- What is Arun Kalyanasundaram's NPI number?
- Arun Kalyanasundaram's National Provider Identifier (NPI) is 1972562346, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arun Kalyanasundaram's specialty?
- Arun Kalyanasundaram is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Arun Kalyanasundaram located?
- Arun Kalyanasundaram's practice location on file with NPPES is 1000 N Oak Ave, Marshfield, WI 54449-5703.
- What is Arun Kalyanasundaram's phone number?
- The practice phone number listed in the NPPES registry for Arun Kalyanasundaram is (715) 387-5511.
- Does Arun Kalyanasundaram accept Medicare?
- Arun Kalyanasundaram is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Arun Kalyanasundaram's NPI active?
- Yes — Arun Kalyanasundaram's NPI (1972562346) is active in the NPPES registry as of the last update on 2023-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.