NPI registry status
Active
2026 NPPES data Student in an Organized Health Care Education/Training Program NPI 1912226671 M.D.
Verify on CMS → Eric Chang, M.D.
Student in an Organized Health Care Education/Training Program in Honolulu, Hawaii.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 331,274 in Student in an Organized Health Care Education/Training Program, 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
166
Medicare Part D claims · 72 beneficiaries · Student in an Organized Health Care Education/Training Program avg: 459
What the federal data shows
Eric Chang, M.D. filed 166 Medicare Part D claims in 2023 as a Student in an Organized Health Care Education/Training Program in Honolulu, Hawaii.
- 166
- Part D claims, 2023
- ≥35th
- 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.
CMS NPPES provider registry desk
NPI 1912226671 · Student in an Organized Health Care Education/Training Program
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1912226671
- ENUM-MID 2010
- TAX-MEGA 331K Student in
- RX-LIGHT 166
- BOOK-LIGHT 796 in Hawaii
- PHOTO-ENUM Shishin Miyagi · 2010
Eric Chang, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
166 ≥ 35th percentile 35% of 1,370,886 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 · 2023
What does the federal data show about Eric Chang, M.D.?
Quality data not reportedPrimary specialty
Student in an Organized Health Care Education/Training Program
Medicare Part D claims
166 64% vs specialty avg
Specialty distribution in Hawaii
How Student in an Organized Health Care Education/Training Program compares to other specialties among Hawaii 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 Student in an Organized Health Care Education/Training Program. 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 | 1912226671 |
|---|---|
| Specialty | Student in an Organized Health Care Education/Training Program |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/20/2010 |
Hospital and facility affiliations
Facilities where Eric Chang, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Southern California Permanente Medical Group
Fontana, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
166
Total Claims
$3K
Total Drug Cost
72
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 181
- Total Day Supply
- 3,275
- Generic Drug Cost
- $3K
- Opioid Claims
- 45 (27.1% rate)
- Antibiotic Claims
- 19
Patient Demographics
- Average Patient Age
- 71.8 years
- Avg HCC Risk Score
- 1.56
- Gender Split
- 47% female / 53% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Eric Chang, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
30 claims
- Tramadol Hcl
Tramadol Hcl
24 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
18 claims
- Proctozone-Hc
Proctozone-Hc
17 claims
- Ursodiol
Ursodiol
14 claims
- Meloxicam
Meloxicam
13 claims
| Drug | Claims |
|---|---|
| Gabapentin | 30 |
| Tramadol Hcl | 24 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 18 |
| Proctozone-Hc Hydrocortisone | 17 |
| Ursodiol | 14 |
| Meloxicam | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Student in an Organized Health Care Education/Training Program in HI →
All providers in Hawaii →
Compare specialties →
Student in an Organized Health Care Education/Training Program Overview
How Eric Chang, M.D. fits within the Student in an Organized Health Care Education/Training Program landscape nationally.
331,274
Student in an Organized Health Care Education/Training Program Providers in US
55
States with Student in an Organized Health Care Education/Training Program
459
Avg Claims per Provider
Eric Chang, M.D.'s 166 claims are below the specialty average of 459.
Nationwide Student in an Organized Health Care Education/Training Program peers with similar MIPS or enrollment year
Two federal-record peer sets for Chang, both outside Hawaii so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2010)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Student in an Organized Health Care Education/Training Program Providers in Hawaii
Other clinicians with the same primary specialty enrolled in Hawaii, drawn from the same CMS NPPES roster as Chang.
One of 796 Student in an Organized Health Care Education/Training Program providers enrolled in Hawaii, 5 are shown here.
Frequently Asked Questions
What is Eric Chang, M.D.'s specialty? ▼
Eric Chang, M.D. specializes in Student in an Organized Health Care Education/Training Program and practices in Honolulu, Hawaii. Credentials: M.D..
How much does Eric Chang, M.D. prescribe under Medicare Part D? ▼
In 2023, Eric Chang, M.D. wrote 166 Medicare Part D claims totaling $3K in drug costs for 72 beneficiaries.
Where is Eric Chang, M.D. located? ▼
Eric Chang, M.D. is located at 550 S BERETANIA ST STE 509, Honolulu, HI, 96813. Phone: (808) 691-8885.
What is Eric Chang, M.D.'s NPI number? ▼
Eric Chang, M.D.'s National Provider Identifier (NPI) is 1912226671, issued on 05/20/2010.
Does Eric Chang, M.D. prescribe opioids? ▼
Yes, Eric Chang, M.D. had 45 opioid claims in 2023 with an opioid prescribing rate of 27.1%.
How many Student in an Organized Health Care Education/Training Program providers are there in the US? ▼
There are 331,274 Student in an Organized Health Care Education/Training Program providers across 55 states in the US. The average Student in an Organized Health Care Education/Training Program provider writes 459 Medicare Part D claims per year.
What drugs does Eric Chang, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Eric Chang, M.D.'s most frequently prescribed drugs include Gabapentin, Tramadol Hcl, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Eric Chang, M.D. accept Medicare? ▼
Eric Chang, M.D. appears in CMS Medicare data with 166 Part D claims and 72 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eric Chang, M.D.'s credentials? ▼
Eric Chang, M.D.'s NPI is 1912226671 with credentials M.D.. 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 (2023). 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 April 2026 (NPPES) / 2023 (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 May 2026.