Kai Sun, M.D.
NPI 1568758001 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kai Sun, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1568758001).
Provider details
- NPI number
- 1568758001
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 125059863 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
50 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 28 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 22 | $135 |
Typical Medicare-allowed amounts for these services range $15–$135 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 53 | 27 |
| Prednisone | 25 | 14 |
| Methotrexate Sodiumbrand: Methotrexate | 19 | 11 |
| Etanerceptbrand: Enbrel Sureclick | 18 | — |
| Pregabalin | 13 | — |
| Adalimumabbrand: Humira(cf) Pen | 11 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$48 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
Registry dates
- Enumerated
- 2011-06-23
- Last updated
- 2013-02-18
Frequently asked questions
- What is Kai Sun's NPI number?
- Kai Sun's National Provider Identifier (NPI) is 1568758001, 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 Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kai Sun located?
- Kai Sun's practice location on file with NPPES is 251 E Huron St, Chicago, IL 60611-2908.
- What is Kai Sun's phone number?
- The practice phone number listed in the NPPES registry for Kai Sun is (877) 926-4664.
- 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 (1568758001) is active in the NPPES registry as of the last update on 2013-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.