NPPES file of Aug 9, 2026

Sanhwan Chen

Dermatopathology Physician · Everett, WA

Sanhwan Chen is a dermatopathology physician with a practice address in Everett, Washington, and NPI 1932165784, issued on Apr 21, 2006. Check the license (Washington 38807, as entered in NPPES) on the Washington Medical Commission; 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
1932165784
Name
Sanhwan Chen
Primary taxonomy
Dermatopathology Physician 207ND0900X
License number
38807 WA
Self-reported in NPPES; status is on the state search
Practice location
4004 Colby Ave, Everett, WA 98201
Phone
(425) 339-5417
Enumerated
Apr 21, 2006
Record last updated
Dec 6, 2012 (not updated in 14 years: call before relying on the address or phone)
Medicaid ID
1022516 WA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 4004 Colby Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Marshall Batchelor, DDSEndodontics1457401853
  2. Lucy Chao, MDDermatology Physician1396136057
  3. Michelle Draper, ARNPNurse Practitioner1578573648
  4. Linda Gabourel, MDDermatology Physician1568427623
  5. Mary Kay Graves, N.P.Nurse Practitioner1689755977
  6. Calvin Knapp, MDDermatology Physician1225533458

Verify Sanhwan Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license 38807
    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 Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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36% fewer Medicare Part D claims than the average dermatopathology physician in 2024

445 Medicare Part D claims for 221 beneficiaries, against an average of 693 among the 249 providers of this specialty who prescribed in Part D.

  1. Sanhwan Chen445
  2. Specialty average693

Most prescribed

  1. Triamcinolone Acetonide58 claims
  2. Fluorouracil48 claims
  3. Betamethasone Dipropionate39 claims
  4. Doxycycline Hyclate31 claims
  5. Ketoconazole27 claims
  6. Clobetasol Propionate24 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: $15.17

1 payment: food and beverage; the largest payer was Abbvie Inc. The 233 providers of this specialty with any payment received $2,984.42 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Sanhwan Chen$15.17
  2. Specialty average$2,984.42

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

Sanhwan Chen among 11 dermatopathology physician records in Washington

Sanhwan Chen is one of 11 dermatopathology physician records with a practice address in Washington. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 0% of them.

  • NPI issued2006 · 0% of these records are older, 55% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 64% of these records are
  • Record last updated2012 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ND0900X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatopathology Physician providers in Washington

There are 11 dermatopathology physician records in Washington.

The 8 dermatopathology physician records with the nearest ZIP codes

  1. Zsolt Argenyi, MDSeattle, WA 981951861538480
  2. Nan Ring, MDSeattle, WA 981121083063549
  3. John Zhang, M.D.Mill Creek, WA 980121699947747
  4. Kyle Garton, MDBellevue, WA 980051578673372
  5. Caitlin May, M.D.Bellevue, WA 980051215370630
  6. Michael Piepkorn, M.D.Bellevue, WA 980051609975226
  7. Casey Carlos, MDBellevue, WA 980041710149430
  8. Thomas Weir, M.D.Bellevue, WA 980041639278260

Common questions

What is Sanhwan Chen's NPI number?

Sanhwan Chen's National Provider Identifier (NPI) is 1932165784, issued on Apr 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sanhwan Chen located?

The NPPES record lists a practice address at 4004 Colby Ave, Everett, WA, 98201. Phone: (425) 339-5417. Providers update this record themselves, so call before visiting.

How can I verify Sanhwan Chen's license?

NPPES lists Washington license number 38807, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Sanhwan Chen prescribe under Medicare Part D?

In 2024, Sanhwan Chen had 445 Medicare Part D claims for 221 beneficiaries; the average among dermatopathology physician prescribers was 693. 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.