NPI registry status
Active
2026 NPPES data Hospice and Palliative Medicine (Internal Medicine) Physician NPI 1558522425 M.D.
Verify on CMS → Michael Chyu, M.D.
Hospice and Palliative Medicine (Internal Medicine) Physician in Allentown, 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 1,541 in Hospice and Palliative Medicine (Internal Medicine) 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
12K
Medicare Part D claims · 640 beneficiaries · Hospice and Palliative Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
84%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$13.1
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Michael Chyu, M.D. filed 12,304 Medicare Part D claims in 2023 as a Hospice and Palliative Medicine (Internal Medicine) Physician in Allentown, Pennsylvania, prescribing 84% generic.
- 12K
- Part D claims, 2023
- 84%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥98th
- 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 1558522425 · Hospice and Palliative Medicine (Internal Medicine) Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-HEAVY · BOOK-THIN · PHOTO-ENUM
- NPI-10 1558522425
- ENUM-MID 2008
- TAX-NARROW 1,541
- RX-HEAVY 12K claims
- BOOK-THIN 81 in Pennsylvania
- PHOTO-ENUM Eric Bush · 2008
Michael Chyu, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
12,304 ≥ 98th percentile 98% 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
✓
Board certification likely (heuristic, not verified)
Michael Chyu, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Michael Chyu, M.D.?
Quality data not reportedPrimary specialty
Hospice and Palliative Medicine (Internal Medicine) Physician
Medicare Part D claims
12,304 10× vs specialty avg
Specialty distribution in Pennsylvania
How Hospice and Palliative Medicine (Internal Medicine) Physician compares to other specialties among Pennsylvania 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 Hospice and Palliative Medicine (Internal Medicine) 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 | 1558522425 |
|---|---|
| Specialty | Hospice and Palliative Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/23/2008 |
Hospital and facility affiliations
Facilities where Michael Chyu, 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.
St Joseph Medical Group
Reading, 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).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Michael Chyu, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$13
Largest payer
Janssen Pharmaceuticals, Inc
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Michael Chyu, M.D.. To verify Michael Chyu, M.D.'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.
Brand vs generic prescribing mix · Typical
Michael Chyu, M.D. - brand share 15.0%
Hospice and Palliative Medicine (Internal Medicine) Physician average
15% brand-name claims vs 84% generic, on 12,304 2023 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 2023.
12,304
Total Claims
$816K
Total Drug Cost
640
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 12,362
- Total Day Supply
- 293,249
- Brand vs Generic
- 15% brand / 84% generic
- Brand Drug Cost
- $556K
- Generic Drug Cost
- $252K
- Opioid Claims
- 135 (1.1% rate)
- Antibiotic Claims
- 225
Patient Demographics
- Average Patient Age
- 80.4 years
- Avg HCC Risk Score
- 2.55
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 57, 65-74: 109, 75-84: 217, 85+: 257
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Michael Chyu, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
683 claims
- Gabapentin
Gabapentin
549 claims
- Eliquis
Eliquis
536 claims
- Pantoprazole Sodium
Pantoprazole Sodium
397 claims
- Amlodipine Besylate
Amlodipine Besylate
395 claims
- Levothyroxine Sodium
Levothyroxine Sodium
395 claims
- Furosemide
Furosemide
382 claims
- Metoprolol Tartrate
Metoprolol Tartrate
279 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 683 |
| Gabapentin | 549 |
| Eliquis Apixaban | 536 |
| Pantoprazole Sodium | 397 |
| Amlodipine Besylate | 395 |
| Levothyroxine Sodium | 395 |
| Furosemide | 382 |
| Metoprolol Tartrate | 279 |
| Metoprolol Succinate | 261 |
| Clopidogrel Clopidogrel Bisulfate | 236 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Hospice and Palliative Medicine (Internal Medicine) Physician in PA →
All providers in Pennsylvania →
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Hospice and Palliative Medicine (Internal Medicine) Physician Overview
How Michael Chyu, M.D. fits within the Hospice and Palliative Medicine (Internal Medicine) Physician landscape nationally.
1,541
Hospice and Palliative Medicine (Internal Medicine) Physician Providers in US
51
States with Hospice and Palliative Medicine (Internal Medicine) Physician
1,275
Avg Claims per Provider
Michael Chyu, M.D.'s 12,304 claims are above the specialty average of 1,275.
Nationwide Hospice and Palliative Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Chyu, both outside Pennsylvania so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Hospice and Palliative Medicine (Internal Medicine) Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Chyu.
One of 81 Hospice and Palliative Medicine (Internal Medicine) Physician providers enrolled in Pennsylvania, 5 are shown here.
Frequently Asked Questions
What is Michael Chyu, M.D.'s specialty? ▼
Michael Chyu, M.D. specializes in Hospice and Palliative Medicine (Internal Medicine) Physician and practices in Allentown, Pennsylvania. Credentials: M.D..
How much does Michael Chyu, M.D. prescribe under Medicare Part D? ▼
In 2023, Michael Chyu, M.D. wrote 12,304 Medicare Part D claims totaling $816K in drug costs for 640 beneficiaries.
Where is Michael Chyu, M.D. located? ▼
Michael Chyu, M.D. is located at 1605 N CEDAR CREST BLVD STE 110B, Allentown, PA, 18104. Phone: (610) 973-1410.
What is Michael Chyu, M.D.'s NPI number? ▼
Michael Chyu, M.D.'s National Provider Identifier (NPI) is 1558522425, issued on 06/23/2008.
Does Michael Chyu, M.D. prescribe more brand-name or generic drugs? ▼
Michael Chyu, M.D.'s prescribing is 15% brand-name and 84% generic drugs by claim count, with $556K in brand drug costs.
Does Michael Chyu, M.D. prescribe opioids? ▼
Yes, Michael Chyu, M.D. had 135 opioid claims in 2023 with an opioid prescribing rate of 1.1%.
How many Hospice and Palliative Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 1,541 Hospice and Palliative Medicine (Internal Medicine) Physician providers across 51 states in the US. The average Hospice and Palliative Medicine (Internal Medicine) Physician provider writes 1,275 Medicare Part D claims per year.
What drugs does Michael Chyu, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Chyu, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Gabapentin, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Chyu, M.D. accept Medicare? ▼
Michael Chyu, M.D. appears in CMS Medicare data with 12,304 Part D claims and 640 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Chyu, M.D.'s credentials? ▼
Michael Chyu, M.D.'s NPI is 1558522425 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.