2026 NPPES data Pain Medicine (Physical Medicine & Rehabilitation) Physician NPI 1447605332 D.O.
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CALVIN CHEN, D.O.

Pain Medicine (Physical Medicine & Rehabilitation) Physician in LOUISVILLE, Kentucky. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
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

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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

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 reported

NPI registry status

Active

Issued 04/27/2016

NPI 1447605332

Primary specialty

Pain Medicine (Physical Medicine & Rehabilitation) Physician

Niche

1,626 US NPIs in this specialty

Medicare Part D claims

140 90% vs specialty avg

2023 prescription claims

Specialty avg: 1,401

Specialty distribution in Kentucky

How Pain Medicine (Physical Medicine & Rehabilitation) Physician compares to other specialties among Kentucky providers

Kentucky providers

Pain Medicine (Physical Medicine & Rehabilitation) Physician share within Kentucky

1. Pain Medicine (Physical Medicine & Rehabilitation) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pain Medicine (Physical Medicine & Rehabilitation) Physician share within Kentucky

Specialty board-certification context

Estimated specialty board-certified rate — Pain Medicine (Physical Medicine & Rehabilitation) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Pain Medicine (Physical Medicine & Rehabilitation) Physician ABMS/AOA estimate

Est. board-certified rate (Pain Medicine (Physical Medicine & Rehabilitation) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pain Medicine (Physical Medicine & Rehabilitation) Physician) — ABMS / AOA estimate

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. is a Pain Medicine (Physical Medicine & Rehabilitation) Physician provider practicing in LOUISVILLE, Kentucky, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1447605332. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHEN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

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%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Pain Medicine (Physical Medicine & Rehabilitation) Physician is a narrow specialty nationwide, with 1,626 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

800 ZORN AVE
LOUISVILLE, KY 40206

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.

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.

Pain Medicine (Physical Medicine & Rehabilitation) Physician Overview

How CALVIN CHEN, D.O. fits within the Pain Medicine (Physical Medicine & Rehabilitation) Physician landscape nationally.

1,626
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.

Compare Pain Medicine (Physical Medicine & Rehabilitation) Physician nationally: see state-by-state distribution →

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 1,626 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

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