Zenas Chang, MD, MS
NPI 1750728242 · Obstetrics & Gynecology Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zenas Chang, MD, MS is a Obstetrics & Gynecology Physician provider in Indianapolis, IN (NPI 1750728242).
Provider details
- NPI number
- 1750728242
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MS
- Sex
- Male
- Sole proprietor
- No
- License
- 01084636A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 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
153 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 65 | $60 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 38 | $120 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 37 | $90 |
| Removal of Uterus, Tubes, And/Or Ovaries Through Abdomen Using an Endoscope, 250.0 G Or Less58571 | 13 | $794 |
Typical Medicare-allowed amounts for these services range $60–$794 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$776 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)
- 1701 N Senate BlvdIndianapolis, IN 46202-1239Phone: (888) 484-3258
Registry dates
- Enumerated
- 2013-05-24
- Last updated
- 2025-03-05
- Certified
- 2025-03-05
Frequently asked questions
- What is Zenas Chang's NPI number?
- Zenas Chang's National Provider Identifier (NPI) is 1750728242, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zenas Chang's specialty?
- Zenas Chang is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Zenas Chang located?
- Zenas Chang's practice location on file with NPPES is 535 Barnhill Dr Ste 436, Indianapolis, IN 46202-5116.
- What is Zenas Chang's phone number?
- The practice phone number listed in the NPPES registry for Zenas Chang is (317) 948-7583.
- Does Zenas Chang accept Medicare?
- Zenas Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zenas Chang's NPI active?
- Yes — Zenas Chang's NPI (1750728242) is active in the NPPES registry as of the last update on 2025-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.