Chae Han - Chang, MD
NPI 1588777122 · Internal Medicine Physician · Gurnee, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chae Han - Chang, MD is a Internal Medicine Physician provider in Gurnee, IL (NPI 1588777122).
Provider details
- NPI number
- 1588777122
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036096132 (IL)
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
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
72 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 | 24 | $134 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 21 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 15 | $137 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 12 | $94 |
Typical Medicare-allowed amounts for these services range $9–$137 (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 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 107 | 46 |
| Amlodipine Besylate | 99 | 37 |
| Levothyroxine Sodium | 91 | 30 |
| Losartan Potassium | 71 | 26 |
| Rosuvastatin Calcium | 64 | 21 |
| Lisinopril | 64 | 26 |
| Metoprolol Succinate |
Practice location
Mailing address
Additional practice locations (2)
- 350 S Waukegan Rd Ste 100&200Deerfield, IL 60015-5239Phone: (847) 350-7297Fax: (312) 926-2185
- 870 N Milwaukee Ave Fl 2Vernon Hills, IL 60061-1521Phone: (847) 535-7157Fax: (847) 535-8210
Registry dates
- Enumerated
- 2006-08-17
- Last updated
- 2025-08-07
- Certified
- 2025-08-07
Frequently asked questions
- What is Chae Han - Chang's NPI number?
- Chae Han - Chang's National Provider Identifier (NPI) is 1588777122, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chae Han - Chang's specialty?
- Chae Han - Chang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chae Han - Chang located?
- Chae Han - Chang's practice location on file with NPPES is 731 S Illinois Route 21, Gurnee, IL 60031-3813.
- What is Chae Han - Chang's phone number?
- The practice phone number listed in the NPPES registry for Chae Han - Chang is (847) 566-3337.
- Does Chae Han - Chang accept Medicare?
- Chae Han - Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chae Han - Chang's NPI active?
- Yes — Chae Han - Chang's NPI (1588777122) is active in the NPPES registry as of the last update on 2025-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.