NPPES file of Aug 9, 2026

Khamphoucanh Southisombath, M.D.

Family Medicine Physician · Federal Way, WA

Khamphoucanh Southisombath, M.D. is a family medicine physician with a practice address in Federal Way, Washington, and NPI 1114316734, issued on Jan 20, 2015. Check the license (Washington MD60658344, 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
1114316734
Name
Khamphoucanh Southisombath
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
MD60658344 WA
Self-reported in NPPES; status is on the state search
Practice location
32018 23RD Ave S, Federal Way, WA 98003
Phone
(206) 520-5000
Enumerated
Jan 20, 2015
Record last updated
Jul 17, 2025
Fax
(206) 520-1799
Medicaid ID
1114316734 WA
Medicare enrollment
Enrolled (PECOS I20160621002324); accepts Medicare assignment
Medical or professional school
University Of California, San Diego School Of Medicine, 2013
Telehealth
Offers telehealth (CMS)
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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8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →

Also registered at 32018 23RD Ave S

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

  1. Nickisha Berlus, M.D.Family Medicine Physician1609134873
  2. Sona Bhatti, D.O.Internal Medicine Physician1225353063
  3. John ChaffeeFamily Medicine Physician1326123126
  4. Larhonda Clayville, ARNPFamily Nurse Practitioner1629005962
  5. Christopher Coppeans, MDFamily Medicine Physician1194922526
  6. Robert DiniFamily Medicine Physician1124103924

Verify Khamphoucanh Southisombath in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD60658344    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

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44% fewer Medicare Part D claims than the average family medicine physician in 2024

1,975 Medicare Part D claims for 149 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 47 claims were for opioids.

  1. Khamphoucanh Southisombath1,975
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium183 claims
  2. Amlodipine Besylate114 claims
  3. Lisinopril99 claims
  4. Losartan Potassium83 claims
  5. Metformin Hcl74 claims
  6. Gabapentin61 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.

Bills Medicare through 2 group practices

  1. Neighborcare HealthSeattle, WA
  2. The Association OF University PhysiciansFederal Way, WA

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

Khamphoucanh Southisombath among 5,534 family medicine physician records in Washington

Khamphoucanh Southisombath, M.D. is one of 5,534 family medicine physician records with a practice address in Washington. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 73% of them.

  • NPI issued2015 · 73% of these records are older, 24% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2013 · median 2009 among the 3,294 with a school on file
  • Record last updated2025 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

91 family medicine physician records list a practice address in Federal Way

They are 91 of the 2,770 NPPES records with a practice address in Federal Way, and 5,534 family medicine physician records in Washington.

All 5,534 in Washington → Every provider in Federal Way → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Alnasir Adatia, DOFederal Way, WA 980031164474227
  2. Jai Jun Byeon, MDFederal Way, WA 980031386694982
  3. Jill Fuller, MDFederal Way, WA 980031871576744
  4. Tina Hawley, M.D.Federal Way, WA 980031699764472
  5. Nan-Shing Hsu, M.D.Federal Way, WA 980031598731804
  6. Doug Kim, MDFederal Way, WA 980031720087067
  7. Vuthy Leng, M.D.Federal Way, WA 980031710952379
  8. Peter Littlewood, MDFederal Way, WA 980031083607758

Common questions

What is Khamphoucanh Southisombath, M.D.'s NPI number?

Khamphoucanh Southisombath, M.D.'s National Provider Identifier (NPI) is 1114316734, issued on Jan 20, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Khamphoucanh Southisombath, M.D. located?

The NPPES record lists a practice address at 32018 23RD Ave S, Federal Way, WA, 98003. Phone: (206) 520-5000. Providers update this record themselves, so call before visiting.

How can I verify Khamphoucanh Southisombath, M.D.'s license?

NPPES lists Washington license number MD60658344, 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 Khamphoucanh Southisombath, M.D. prescribe under Medicare Part D?

In 2024, Khamphoucanh Southisombath, M.D. had 1,975 Medicare Part D claims for 149 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.