NPI registry status
Active
2026 NPPES data Pain Medicine (Physical Medicine & Rehabilitation) Physician NPI 1447605332 D.O.
Verify on CMS → Calvin Chen, D.O.
Pain Medicine (Physical Medicine & Rehabilitation) Physician in Louisville, Kentucky.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,630 in Pain Medicine (Physical Medicine & Rehabilitation) 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
140
Medicare Part D claims · 42 beneficiaries · Pain Medicine (Physical Medicine & Rehabilitation) Physician avg: 1K
Industry payments
$106.99
2 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Calvin Chen, D.O. filed 140 Medicare Part D claims in 2023 as a Pain Medicine (Physical Medicine & Rehabilitation) Physician in Louisville, Kentucky.
- 140
- Part D claims, 2023
- $106.99
- industry payments (Sunshine Act)
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.
Calvin Chen, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
140 35th percentile higher than 35% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
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Board-eligible specialty (heuristic, not verified)
Calvin Chen, D.O. 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 Calvin Chen, D.O.?
Quality data not reportedPrimary specialty
Pain Medicine (Physical Medicine & Rehabilitation) Physician
Medicare Part D claims
140 90% vs specialty avg
Specialty distribution in Kentucky
How Pain Medicine (Physical Medicine & Rehabilitation) Physician compares to other specialties among Kentucky 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 Pain Medicine (Physical Medicine & Rehabilitation) 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).
Calvin Chen, D.O. appears in the CMS NPPES registry as a Pain Medicine (Physical Medicine & Rehabilitation) Physician provider holding D.O. credentials at 800 ZORN AVE, Louisville, KY, 40206, with a listed phone of (502) 287-4000. NPI 1447605332 was issued on 04/27/2016.
Medicare Part D records for calendar year 2023 show 140 prescription claims written by this provider, covering 42 Medicare beneficiaries and totaling roughly $6K in drug spend, with an opioid prescribing rate of 47.1%.
Pain Medicine (Physical Medicine & Rehabilitation) Physician is a narrow specialty nationwide, with 1,630 enrolled providers across 50 states and an average of 1,401 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 | 1447605332 |
|---|---|
| Specialty | Pain Medicine (Physical Medicine & Rehabilitation) Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 04/27/2016 |
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 Calvin Chen, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$107
Largest payer
PFIZER 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
140
Total Claims
$6K
Total Drug Cost
42
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 169
- Total Day Supply
- 4,835
- Generic Drug Cost
- $3K
- Opioid Claims
- 66 (47.1% rate)
Patient Demographics
- Average Patient Age
- 69.3 years
- Avg HCC Risk Score
- 1.70
- Gender Split
- 50% female / 50% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Calvin Chen, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pregabalin
Pregabalin
28 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
26 claims
- Tizanidine Hcl
Tizanidine Hcl
15 claims
- Oxycodone Hcl
Oxycodone Hcl
14 claims
- Gabapentin
Gabapentin
13 claims
| Drug | Claims |
|---|---|
| Pregabalin | 28 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 26 |
| Tizanidine Hcl | 15 |
| Oxycodone Hcl | 14 |
| Gabapentin | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Pain Medicine (Physical Medicine & Rehabilitation) Physician in KY →
All providers in Kentucky →
Compare specialties →
Pain Medicine (Physical Medicine & Rehabilitation) Physician Overview
How Calvin Chen, D.O. fits within the Pain Medicine (Physical Medicine & Rehabilitation) Physician landscape nationally.
1,630
Pain Medicine (Physical Medicine & Rehabilitation) Physician Providers in US
50
States with Pain Medicine (Physical Medicine & Rehabilitation) Physician
1,401
Avg Claims per Provider
Calvin Chen, D.O.'s 140 claims are below the specialty average of 1,401.
Nearby Pain Medicine (Physical Medicine & Rehabilitation) Physician Providers in Kentucky
Other clinicians with the same primary specialty enrolled in Kentucky, drawn from the same CMS NPPES roster as Chen.
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 Kentucky medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pain Medicine (Physical Medicine & Rehabilitation) 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
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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 Kentucky
Frequently Asked Questions
What is Calvin Chen, D.O.'s specialty? ▼
Calvin Chen, D.O. specializes in Pain Medicine (Physical Medicine & Rehabilitation) Physician and practices in Louisville, Kentucky. Credentials: D.O..
How much does Calvin Chen, D.O. prescribe under Medicare Part D? ▼
In 2023, Calvin Chen, D.O. wrote 140 Medicare Part D claims totaling $6K in drug costs for 42 beneficiaries.
Where is Calvin Chen, D.O. located? ▼
Calvin Chen, D.O. is located at 800 ZORN AVE, Louisville, KY, 40206. Phone: (502) 287-4000.
What is Calvin Chen, D.O.'s NPI number? ▼
Calvin Chen, D.O.'s National Provider Identifier (NPI) is 1447605332, issued on 04/27/2016.
Does Calvin Chen, D.O. prescribe opioids? ▼
Yes, Calvin Chen, D.O. had 66 opioid claims in 2023 with an opioid prescribing rate of 47.1%.
How many Pain Medicine (Physical Medicine & Rehabilitation) Physician providers are there in the US? ▼
There are 1,630 Pain Medicine (Physical Medicine & Rehabilitation) Physician providers across 50 states in the US. The average Pain Medicine (Physical Medicine & Rehabilitation) Physician provider writes 1,401 Medicare Part D claims per year.
What drugs does Calvin Chen, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Calvin Chen, D.O.'s most frequently prescribed drugs include Pregabalin, Hydrocodone-Acetaminophen, Tizanidine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Calvin Chen, D.O. accept Medicare? ▼
Calvin Chen, D.O. appears in CMS Medicare data with 140 Part D claims and 42 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Calvin Chen, D.O.'s credentials? ▼
Calvin Chen, D.O.'s NPI is 1447605332 with credentials D.O.. 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.