NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1710520853 CRNP
Verify on CMS → Shwu-Yn Chang, CRNP
Rheumatology Physician in Middletown, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,181 in Rheumatology 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
1K
Medicare Part D claims · 142 beneficiaries · Rheumatology Physician avg: 2K
MIPS score
71.8/100
▼ 11 pts below national avg 83.1 · Mid-tier
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Shwu-Yn Chang, CRNP reported a CMS MIPS final score of 71.8/100 - below the 83.1 national average - and filed 1,186 Medicare Part D claims in 2023.
- 71.8/100
- MIPS score · -11 vs avg
- 1K
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
Shwu-Yn Chang, CRNP's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
72 9th percentile higher than 9% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Shwu-Yn Chang, CRNP sits
This provider among rheumatology physician peers
Across the 2,181 rheumatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Shwu-Yn Chang, CRNP writes more Part D claims than 30% of them and scores higher on MIPS quality than 9% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one rheumatology physician peer from a representative sample of 60; the gold marker is Shwu-Yn Chang, CRNP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Shwu-Yn Chang, CRNP practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Shwu-Yn Chang, CRNP?
Below national averagePrimary specialty
Rheumatology Physician
Medicare Part D claims
1,186 42% vs specialty avg
MIPS final score
71.8/100 11.3 pts vs avg
Specialty distribution in Pennsylvania
How Rheumatology Physician compares to other specialties among Pennsylvania providers
Medicare quality performance, MIPS
Shwu-Yn Chang, CRNP's 2023 MIPS final score plotted against the Rheumatology Physician national average
- MIPS Final Score
- 71.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Rheumatology Physician) - 71.8/100 vs national avg 83.1
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).
Shwu-Yn Chang, CRNP appears in the CMS NPPES registry as a Rheumatology Physician provider holding CRNP credentials at 3100 SCHOOLHOUSE RD, Middletown, PA, 17057, with a listed phone of (717) 531-5384. NPI 1710520853 was issued on 10/22/2019.
Medicare Part D records for calendar year 2023 show 1,186 prescription claims written by this provider, covering 142 Medicare beneficiaries and totaling roughly $2.0 million in drug spend, with an opioid prescribing rate of 1.7%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 71.8/100 for the 2023 performance year (Quality 48.3, Cost 57.6), compared with the national average of 83.1.
Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1710520853 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | CRNP |
| Gender | Female |
| NPI Issued | 10/22/2019 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
71.7884
Final Score
Avg: 83.1
48.3237
Quality
57.6377
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Shwu-Yn Chang, CRNP 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.
The Milton S Hershey Medical Center Physicians Group
Hershey, PA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Pennsylvania PA-BOM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Shwu-Yn Chang, CRNP. To verify Shwu-Yn Chang, CRNP's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,186
Total Claims
$2.0M
Total Drug Cost
142
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,677
- Total Day Supply
- 48,314
- Generic Drug Cost
- $23K
- Opioid Claims
- 20 (1.7% rate)
Patient Demographics
- Average Patient Age
- 63.3 years
- Avg HCC Risk Score
- 1.40
- Gender Split
- 82% female / 18% male
- Age Distribution
- <65: 63, 65-74: 54, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Shwu-Yn Chang, CRNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
143 claims
- Hydroxychloroquine…
Hydroxychloroquine Sulfate
121 claims
- Methotrexate
Methotrexate
121 claims
- Humira(Cf) Pen
Humira(Cf) Pen
102 claims
- Sulfasalazine
Sulfasalazine
102 claims
- Meloxicam
Meloxicam
63 claims
- Alendronate Sodium 42
Alendronate Sodium
42 claims
- Enbrel Sureclick 39
Enbrel Sureclick
39 claims
| Drug | Claims |
|---|---|
| Prednisone | 143 |
| Hydroxychloroquine Sulfate | 121 |
| Methotrexate Methotrexate Sodium | 121 |
| Humira(Cf) Pen Adalimumab | 102 |
| Sulfasalazine | 102 |
| Meloxicam | 63 |
| Alendronate Sodium | 42 |
| Enbrel Sureclick Etanercept | 39 |
| Allopurinol | 36 |
| Gabapentin | 28 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How Shwu-Yn Chang, CRNP fits within the Rheumatology Physician landscape nationally.
6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider
Shwu-Yn Chang, CRNP's 1,186 claims are below the specialty average of 2,054.
Nearby Rheumatology Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Chang.
Dr. Ravi Acharya
M.D.
Gettysburg, PA
Antonio Achkar
Pittsburgh, PA
Dr. Sandhya Adusumilli
M.D.
Lancaster, PA
Dr. Rohit Aggarwal
M.D.
Pittsburgh, PA
Dr. Shirley Albano
MD
Hershey, PA
Compare Rheumatology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Pennsylvania medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Rheumatology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Shwu-Yn Chang, CRNP's specialty? ▼
Shwu-Yn Chang, CRNP specializes in Rheumatology Physician and practices in Middletown, Pennsylvania. Credentials: CRNP.
How much does Shwu-Yn Chang, CRNP prescribe under Medicare Part D? ▼
In 2023, Shwu-Yn Chang, CRNP wrote 1,186 Medicare Part D claims totaling $2.0M in drug costs for 142 beneficiaries.
What is Shwu-Yn Chang, CRNP's Medicare quality score? ▼
Shwu-Yn Chang, CRNP has a CMS MIPS Final Score of 71.8/100 (Quality: 48.3, Cost: 57.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Shwu-Yn Chang, CRNP located? ▼
Shwu-Yn Chang, CRNP is located at 3100 SCHOOLHOUSE RD, Middletown, PA, 17057. Phone: (717) 531-5384.
What is Shwu-Yn Chang, CRNP's NPI number? ▼
Shwu-Yn Chang, CRNP's National Provider Identifier (NPI) is 1710520853, issued on 10/22/2019.
Does Shwu-Yn Chang, CRNP prescribe opioids? ▼
Yes, Shwu-Yn Chang, CRNP had 20 opioid claims in 2023 with an opioid prescribing rate of 1.7%.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does Shwu-Yn Chang, CRNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Shwu-Yn Chang, CRNP's most frequently prescribed drugs include Prednisone, Hydroxychloroquine Sulfate, Methotrexate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Shwu-Yn Chang, CRNP accept Medicare? ▼
Shwu-Yn Chang, CRNP appears in CMS Medicare data with 1,186 Part D claims and 142 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Shwu-Yn Chang, CRNP's credentials? ▼
Shwu-Yn Chang, CRNP's NPI is 1710520853 with credentials CRNP. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
Compiled from official public sources by the PlainDoctor editorial team.