NPPES file of Aug 9, 2026

Key Yan Tsoi, MD

Surgery Physician · Paintsville, KY

Key Yan Tsoi, MD is a surgery physician with a practice address in Paintsville, Kentucky, and NPI 1821551565, issued on Apr 10, 2019. Check the license (Kentucky 59893, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821551565
Name
Key Yan Tsoi
Credential
MD
Primary taxonomy
Surgery Physician 208600000X
License number
59893 KY
Self-reported in NPPES; status is on the state search
Practice location
604 James Trimble Blvd, Paintsville, KY 41240
Phone
(606) 788-0303
Enumerated
Apr 10, 2019
Record last updated
Aug 3, 2026
Fax
(606) 788-0310
Medicaid ID
7101007420 KY
Medicare enrollment
Enrolled (PECOS I20240927001095); accepts Medicare assignment
Medical or professional school
University Of South Florida College Of Medicine, 2019
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Key Yan Tsoi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersKentucky Board of Medical Licensure
    Search for license 59893
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Kentucky license search

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56% fewer Medicare Part D claims than the average surgery physician in 2024

64 Medicare Part D claims for 22 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D.

  1. Key Yan Tsoi64
  2. Specialty average147

Most prescribed

  1. Ondansetron Odt16 claims
  2. Methocarbamol14 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $19.05

1 payment: food and beverage; the largest payer was PolyNovo North America LLC. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Key Yan Tsoi$19.05
  2. Specialty average$3,513.80

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Appalachian Regional Healthcare IncSalyersville, KY
  2. Arh Tug Valley Health Services IncPaintsville, KY

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Key Yan Tsoi among 459 surgery physician records in Kentucky

Key Yan Tsoi, MD is one of 459 surgery physician records with a practice address in Kentucky. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 92% of them.

  • NPI issued2019 · 92% of these records are older, 4% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2019 · median 2005 among the 292 with a school on file
  • Record last updated2026 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Kentucky practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

3 surgery physician records list a practice address in Paintsville

They are 3 of the 176 NPPES records with a practice address in Paintsville, and 459 surgery physician records in Kentucky.

The 8 surgery physician records with the nearest ZIP codes

  1. Patricia Cataldi, M.D.Paintsville, KY 412401588752588
  2. Milot Faria, M.D.Paintsville, KY 412401801984893
  3. Melissa SteppLouisa, KY 412301265386858
  4. Pedro Lim, MDAshland, KY 411021750466371
  5. Timothy Demshar, D.O.Ashland, KY 411011730716986
  6. William Dunlop, MDAshland, KY 411011669547626
  7. Tyler Grant, D.O.Ashland, KY 411011902221823
  8. Sonja Lichtenstein-Zayneh, MDAshland, KY 411011821175274

Common questions

What is Key Yan Tsoi, MD's NPI number?

Key Yan Tsoi, MD's National Provider Identifier (NPI) is 1821551565, issued on Apr 10, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Key Yan Tsoi, MD located?

The NPPES record lists a practice address at 604 James Trimble Blvd, Paintsville, KY, 41240. Phone: (606) 788-0303. Providers update this record themselves, so call before visiting.

How can I verify Key Yan Tsoi, MD's license?

NPPES lists Kentucky license number 59893, as entered by the provider. Search the Kentucky Board of Medical Licensure at https://web1.ky.gov/GenSearch/LicenseSearch.aspx?AGY=5. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Key Yan Tsoi, MD prescribe under Medicare Part D?

In 2024, Key Yan Tsoi, MD had 64 Medicare Part D claims for 22 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.