Kai Sun, M.D.
NPI 1841746112 · Hematology & Oncology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kai Sun, M.D. is a Hematology & Oncology Physician provider in Houston, TX (NPI 1841746112).
Provider details
- NPI number
- 1841746112
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- T4470 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
259 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 137 | $128 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 42 | $79 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 37 | $178 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 26 | $223 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 17 | $174 |
Typical Medicare-allowed amounts for these services range $79–$223 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 166 | 57 |
| Tamoxifen Citrate | 62 | 20 |
| Anastrozole | 21 | — |
| Gabapentin | 21 | — |
| Abemaciclibbrand: Verzenio | 20 | — |
| Palbociclibbrand: Ibrance | 16 | — |
| Exemestane | 14 | — |
| Duloxetine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-08-28
- Last updated
- 2025-11-07
- Certified
- 2025-11-07
Frequently asked questions
- What is Kai Sun's NPI number?
- Kai Sun's National Provider Identifier (NPI) is 1841746112, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kai Sun's specialty?
- Kai Sun is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Kai Sun located?
- Kai Sun's practice location on file with NPPES is 6445 Main Street Opc 24, Houston, TX 77030-1502.
- What is Kai Sun's phone number?
- The practice phone number listed in the NPPES registry for Kai Sun is (713) 441-9948.
- Does Kai Sun accept Medicare?
- Kai Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kai Sun's NPI active?
- Yes — Kai Sun's NPI (1841746112) is active in the NPPES registry as of the last update on 2025-11-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.