Sung Chun, MD
NPI 1477640381 · Clinical Cardiac Electrophysiology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Cardiac Electrophysiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sung Chun, MD is a Clinical Cardiac Electrophysiology Physician provider in Stanford, CA (NPI 1477640381).
Provider details
- NPI number
- 1477640381
- Entity type
- Individual
- Primary specialty
- Clinical Cardiac Electrophysiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G69787 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
4,328 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System Or Implantable Defibrillator System, Remote Up to 90 Days93296 | 717 | $30 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 609 | $217 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System, Remote Up to 90 Days93294 | 572 | $33 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 480 | $9 |
| Evaluation of Cardiac Rhythm Monitor System, Remote Up to 30 Days93298 | 449 | $87 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 628 | 152 |
| Metoprolol Succinate | 492 | 138 |
| Rivaroxabanbrand: Xarelto | 186 | 46 |
| Amiodarone Hcl | 138 | 49 |
| Flecainide Acetate | 128 | 35 |
| Diltiazem Hclbrand: Diltiazem 24hr Er (cd) | 110 | 37 |
| Atorvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$34 across 1 record (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
Additional practice locations (2)
- 87 Encina AvePalo Alto, CA 94301-2322Phone: (650) 853-2975
- 795 El Camino RealPalo Alto, CA 94301-2302Phone: (650) 321-4121
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2024-04-18
- Certified
- 2024-04-18
Frequently asked questions
- What is Sung Chun's NPI number?
- Sung Chun's National Provider Identifier (NPI) is 1477640381, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sung Chun's specialty?
- Sung Chun is listed in the NPPES registry with a primary specialty of Clinical Cardiac Electrophysiology Physician (Allopathic & Osteopathic Physicians).
- Where is Sung Chun located?
- Sung Chun's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Sung Chun's phone number?
- The practice phone number listed in the NPPES registry for Sung Chun is (650) 723-4000.
- Does Sung Chun accept Medicare?
- Sung Chun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sung Chun's NPI active?
- Yes — Sung Chun's NPI (1477640381) is active in the NPPES registry as of the last update on 2024-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.