NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1356431464 MD
Verify on CMS → Hsichao Chow, MD
Gastroenterology Physician in Corvallis, Oregon.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,567 in Gastroenterology 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
68
Medicare Part D claims · 36 beneficiaries · Gastroenterology Physician avg: 833
MIPS score
87.1/100
▲ 4 pts above national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Hsichao Chow, MD reported a CMS MIPS final score of 87.1/100 - above the 83.1 national average - and filed 68 Medicare Part D claims in 2023.
- 87.1/100
- MIPS score · +4 vs avg
- 68
- 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.
Hsichao Chow, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
87 Top 46% higher than 54% 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 Hsichao Chow, MD sits
This provider among gastroenterology physician peers
Across the 5,957 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Hsichao Chow, MD writes more Part D claims than 6% of them and scores higher on MIPS quality than 59% - placing this provider in the lower-volume, high-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 gastroenterology physician peer from a representative sample of 60; the gold marker is Hsichao Chow, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Hsichao Chow, MD 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 Hsichao Chow, MD?
High performer (top quartile)Primary specialty
Gastroenterology Physician
Medicare Part D claims
68 92% vs specialty avg
MIPS final score
87.1/100 4 pts vs avg
Specialty distribution in Oregon
How Gastroenterology Physician compares to other specialties among Oregon providers
Medicare quality performance, MIPS
Hsichao Chow, MD's 2023 MIPS final score plotted against the Gastroenterology Physician national average
- MIPS Final Score
- 87.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Gastroenterology Physician) - 87.1/100 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).
Hsichao Chow, MD appears in the CMS NPPES registry as a Gastroenterology Physician provider holding MD credentials at 3521 NW SAMARITAN DR STE 101, Corvallis, OR, 97330, with a listed phone of (541) 768-6119. NPI 1356431464 was issued on 10/13/2006.
Medicare Part D records for calendar year 2023 show 68 prescription claims written by this provider, covering 36 Medicare beneficiaries and totaling roughly $89K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 87.1/100 for the 2023 performance year (Quality 77.8, Cost 79.3), compared with the national average of 83.1.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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 | 1356431464 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/13/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
87.1269
Final Score
Avg: 83.1
77.8261
Quality
79.2634
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Hsichao Chow, MD 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.
Good Samaritan Hospital Corvallis
Corvallis, OR
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.
68
Total Claims
$89K
Total Drug Cost
36
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 75
- Total Day Supply
- 1,117
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 75.8 years
- Avg HCC Risk Score
- 1.36
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Ondansetron Odt Ondansetron | 19 |
| Pantoprazole Sodium | 16 |
| Gavilyte-G "Peg3350/Sod Sulf | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Hsichao Chow, MD fits within the Gastroenterology Physician landscape nationally.
16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Hsichao Chow, MD's 68 claims are below the specialty average of 833.
Nearby Gastroenterology Physician Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Chow.
Dr. Peter Adesman
MD
Medford, OR
Dr. Kamran Aghaie
MD
Clackamas, OR
Dr. Joseph Ahn
M.D.
Portland, OR
Dr. Jeffrey Albaugh
MD
Portland, OR
Dr. Deron Amador
M.D.
Portland, OR
Compare Gastroenterology 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 Oregon medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gastroenterology 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Oregon
Frequently Asked Questions
What is Hsichao Chow, MD's specialty? ▼
Hsichao Chow, MD specializes in Gastroenterology Physician and practices in Corvallis, Oregon. Credentials: MD.
How much does Hsichao Chow, MD prescribe under Medicare Part D? ▼
In 2023, Hsichao Chow, MD wrote 68 Medicare Part D claims totaling $89K in drug costs for 36 beneficiaries.
What is Hsichao Chow, MD's Medicare quality score? ▼
Hsichao Chow, MD has a CMS MIPS Final Score of 87.1/100 (Quality: 77.8, Cost: 79.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Hsichao Chow, MD located? ▼
Hsichao Chow, MD is located at 3521 NW SAMARITAN DR STE 101, Corvallis, OR, 97330. Phone: (541) 768-6119.
What is Hsichao Chow, MD's NPI number? ▼
Hsichao Chow, MD's National Provider Identifier (NPI) is 1356431464, issued on 10/13/2006.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does Hsichao Chow, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Hsichao Chow, MD's most frequently prescribed drugs include Ondansetron Odt, Pantoprazole Sodium, Gavilyte-G. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Hsichao Chow, MD accept Medicare? ▼
Hsichao Chow, MD appears in CMS Medicare data with 68 Part D claims and 36 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Hsichao Chow, MD's credentials? ▼
Hsichao Chow, MD's NPI is 1356431464 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 (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.