Hyunseok Kang, MD
NPI 1316108509 · Medical Oncology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hyunseok Kang, MD is a Medical Oncology Physician provider in Stanford, CA (NPI 1316108509).
Provider details
- NPI number
- 1316108509
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C156305 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
363 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 241 | $162 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 75 | $109 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 47 | $202 |
Typical Medicare-allowed amounts for these services range $109–$202 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetron Hcl | 37 | 26 |
| Prochlorperazine Maleate | 28 | 24 |
| Trametinib Dimethyl Sulfoxidebrand: Mekinist | 20 | — |
| Lenvatinib Mesylatebrand: Lenvima | 19 | — |
| Dabrafenib Mesylatebrand: Tafinlar | 15 | — |
| Dexamethasone | 12 | 12 |
| Selpercatinibbrand: Retevmo | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,294 across 5 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
Additional practice locations (1)
- 875 Blake Wilbur DrPalo Alto, CA 94304-2205Phone: (650) 498-6000
Registry dates
- Enumerated
- 2008-06-19
- Last updated
- 2025-12-08
- Certified
- 2025-12-08
Frequently asked questions
- What is Hyunseok Kang's NPI number?
- Hyunseok Kang's National Provider Identifier (NPI) is 1316108509, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hyunseok Kang's specialty?
- Hyunseok Kang is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Hyunseok Kang located?
- Hyunseok Kang's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Hyunseok Kang's phone number?
- The practice phone number listed in the NPPES registry for Hyunseok Kang is (650) 723-4000.
- Does Hyunseok Kang accept Medicare?
- Hyunseok Kang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hyunseok Kang's NPI active?
- Yes — Hyunseok Kang's NPI (1316108509) is active in the NPPES registry as of the last update on 2025-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.