NPI registry status
Active
2026 NPPES data Otolaryngology Physician NPI 1023484052 MD
Verify on CMS → Eun Chang, MD
Otolaryngology Physician in Shrewsbury, New Jersey.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 11,060 in Otolaryngology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
256
Medicare Part D claims · 111 beneficiaries · Otolaryngology Physician avg: 536
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Eun Chang, MD filed 256 Medicare Part D claims in 2024 as an Otolaryngology Physician in Shrewsbury, New Jersey, prescribing 93% generic.
- 256
- Part D claims, 2024
- 93%
- generic prescribing
- ≥48th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Eun Chang, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1023484052), first enumerated 08/13/2015.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 256 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1023484052 · Otolaryngology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1023484052
- ENUM-MID 2015
- TAX-MID 11K Otolaryngology Physician
- RX-LIGHT 256
- BOOK-THIN 255 in New Jersey
- PHOTO-ENUM Suparna Shah, MD · 2015
Eun Chang, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
256 ≥ 48th percentile 48% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Eun Chang, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Eun Chang, MD?
Quality data not reportedPrimary specialty
Otolaryngology Physician
Medicare Part D claims
256 52% vs specialty avg
Specialty distribution in New Jersey
How Otolaryngology Physician compares to other specialties among New Jersey providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Otolaryngology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1023484052 |
|---|---|
| Specialty | Otolaryngology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 08/13/2015 |
Brand vs generic prescribing mix · Generic-heavy
Eun Chang, MD - brand share 7.0%
Otolaryngology Physician average
7% brand-name claims vs 93% generic, on 256 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
256
Total Claims
$7K
Total Drug Cost
111
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 472.7
- Total Day Supply
- 12,041
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $5K
- Antibiotic Claims
- 45
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.01
- Gender Split
- 69% female / 31% male
- Age Distribution
- <65: 11, 65-74: 58, 75-84: 28, 85+: 14
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Eun Chang, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Omeprazole
Omeprazole
58 claims
- Famotidine
Famotidine
38 claims
- Ciprofloxacin-Dexa…
Ciprofloxacin-Dexamethasone
29 claims
- Prednisone
Prednisone
27 claims
- Azelastine Hcl
Azelastine Hcl
26 claims
- Amoxicillin-Clavul… 21
Amoxicillin-Clavulanate Potass
21 claims
- Ipratropium Bromide 17
Ipratropium Bromide
17 claims
| Drug | Claims |
|---|---|
| Omeprazole | 58 |
| Famotidine | 38 |
| Ciprofloxacin-Dexamethasone Ciprofloxacin Hcl/Dexameth | 29 |
| Prednisone | 27 |
| Azelastine Hcl | 26 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 21 |
| Ipratropium Bromide | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Otolaryngology Physician Overview
How Eun Chang, MD fits within the Otolaryngology Physician landscape nationally.
11,060
Otolaryngology Physician Providers in US
54
States with Otolaryngology Physician
536
Avg Claims per Provider
Eun Chang, MD's 256 claims are below the specialty average of 536.
Nationwide Otolaryngology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Chang, both outside New Jersey so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Otolaryngology Physician Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Chang.
One of 255 Otolaryngology Physician providers enrolled in New Jersey, 5 are shown here.
Dr. Mena Abrahim
D.O.
Bridgewater, NJ
Jason Abramowitz
Paramus, NJ
Dr. Stephen Abrams
MD
Wayne, NJ
Dr. Saba Aftab
M.D.
Marlton, NJ
Jay Agarwal
Hackensack, NJ
Compare Otolaryngology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Eun Chang, MD's specialty? ▼
Eun Chang, MD specializes in Otolaryngology Physician and practices in Shrewsbury, New Jersey. Credentials: MD.
How much does Eun Chang, MD prescribe under Medicare Part D? ▼
In 2024, Eun Chang, MD wrote 256 Medicare Part D claims totaling $7K in drug costs for 111 beneficiaries.
Where is Eun Chang, MD located? ▼
Eun Chang, MD is located at 180 AVENUE AT THE CMN STE 8A, Shrewsbury, NJ, 07702. Phone: (732) 868-8622.
What is Eun Chang, MD's NPI number? ▼
Eun Chang, MD's National Provider Identifier (NPI) is 1023484052, issued on 08/13/2015.
Does Eun Chang, MD prescribe more brand-name or generic drugs? ▼
Eun Chang, MD's prescribing is 7% brand-name and 93% generic drugs by claim count, with $2K in brand drug costs.
How many Otolaryngology Physician providers are there in the US? ▼
There are 11,060 Otolaryngology Physician providers across 54 states in the US. The average Otolaryngology Physician provider writes 536 Medicare Part D claims per year.
What drugs does Eun Chang, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Eun Chang, MD's most frequently prescribed drugs include Omeprazole, Famotidine, Ciprofloxacin-Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Eun Chang, MD accept Medicare? ▼
Eun Chang, MD appears in CMS Medicare data with 256 Part D claims and 111 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eun Chang, MD's credentials? ▼
Eun Chang, MD's NPI is 1023484052 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.