Julie Chang, M.D.
NPI 1679524078 · Hematology (Internal Medicine) Physician · Madison, WI
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Julie Chang, M.D. is a Hematology (Internal Medicine) Physician provider in Madison, WI (NPI 1679524078).
Provider details
- NPI number
- 1679524078
- Entity type
- Individual
- Primary specialty
- Hematology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 43702 (WI)
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
20 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
763 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 | 252 | $15 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 134 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 128 | $89 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 91 | $133 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 57 | $110 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 318 | 60 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 90 | 28 |
| Zanubrutinibbrand: Brukinsa | 62 | — |
| Famotidine | 49 | 20 |
| Venetoclaxbrand: Venclexta | 44 | 15 |
| Omeprazole | 42 | — |
| Prednisone | 40 | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,347 across 4 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)
- 1211 Fish Hatchery RdMadison, WI 53715-1909Phone: (608) 252-8000Fax: (608) 410-2905
Registry dates
- Enumerated
- 2006-05-12
- Last updated
- 2025-10-21
- Certified
- 2025-10-21
Frequently asked questions
- What is Julie Chang's NPI number?
- Julie Chang's National Provider Identifier (NPI) is 1679524078, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Julie Chang's specialty?
- Julie Chang is listed in the NPPES registry with a primary specialty of Hematology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Julie Chang located?
- Julie Chang's practice location on file with NPPES is 9242 Bear Claw Way, Madison, WI 53717-2734.
- What is Julie Chang's phone number?
- The practice phone number listed in the NPPES registry for Julie Chang is (608) 827-9665.
- Does Julie Chang accept Medicare?
- Julie Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Julie Chang's NPI active?
- Yes — Julie Chang's NPI (1679524078) is active in the NPPES registry as of the last update on 2025-10-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.