NPPES file of Aug 9, 2026

Chang Woon Kang, M.D.

Geriatric Medicine (Internal Medicine) Physician · Golden, CO

Chang Woon Kang, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Golden, Colorado, and NPI 1689675852, issued on Aug 9, 2005. Check the license (Colorado 43586, as entered in NPPES) on the Colorado Medical Board; 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
1689675852
Name
Chang Woon Kang
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License number
43586 CO
Self-reported in NPPES; status is on the state search
Practice location
5920 Mcintyre St, Golden, CO 80403
Phone
(303) 949-1250
Enumerated
Aug 9, 2005
Record last updated
Jul 13, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(303) 215-7308
Medicaid ID
46885064 CO
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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8 nearest geriatric medicine (internal medicine) physician records → All 103 in Colorado → Look up another NPI →

Also registered at 5920 Mcintyre St

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

  1. Clarence Adams, NPAdult Health Nurse Practitioner1609278290
  2. Mark Adams, MDGeriatric Medicine (Internal Medicine) Physician1881682888
  3. Maureen Allen, WHNPWomen's Health Nurse Practitioner1770525925
  4. Katherine Arthur, PA-CPhysician Assistant1710127659
  5. Myrtle Barlow, NP-CNurse Practitioner1629331186
  6. Sharon Blumenthal, FNPFamily Nurse Practitioner1861628802

Verify Chang Woon Kang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersColorado Medical Board
    Search for license 43586    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 Colorado license search

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96% more Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024

8,324 Medicare Part D claims for 247 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 122 claims were for opioids.

  1. Chang Kang8,324
  2. Specialty average4,246

Most prescribed

  1. Eliquis544 claims
  2. Atorvastatin Calcium472 claims
  3. Levothyroxine Sodium389 claims
  4. Furosemide387 claims
  5. Gabapentin337 claims
  6. Lisinopril281 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: $39.99

1 payment: education; the largest payer was Pfizer Inc. The 1,004 providers of this specialty with any payment received $1,720.82 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Chang Kang$39.99
  2. Specialty average$1,720.82

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

Chang Woon Kang among 103 geriatric medicine (internal medicine) physician records in Colorado

Chang Woon Kang, M.D. is one of 103 geriatric medicine (internal medicine) physician records with a practice address in Colorado. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 92% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 50% of these records are
  • Record last updated2016 · 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 207RG0300X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Internal Medicine) Physician providers in Colorado

There are 103 geriatric medicine (internal medicine) physician records in Colorado.

All 103 in Colorado → Every provider in Golden → Geriatric Medicine (Internal Medicine) Physician nationwide →

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Mark Adams, MDGolden, CO 804031881682888
  2. Donald Murphy, MDGolden, CO 804031013004589
  3. Bookanakere Niranjan, M.D., M.P.H.Golden, CO 804031114010436
  4. Timothy Rodgers, M. D.Golden, CO 804031215939541
  5. Mary Tuuk, MDGolden, CO 804031174630701
  6. Christopher Unrein, DO, FAOGME, FACP, CMGolden, CO 804031225033095
  7. Sarah Beck, M.D.Golden, CO 804011417272584
  8. James Murphy, M.D.Boulder, CO 803041679557268

Common questions

What is Chang Woon Kang, M.D.'s NPI number?

Chang Woon Kang, M.D.'s National Provider Identifier (NPI) is 1689675852, issued on Aug 9, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Chang Woon Kang, M.D. located?

The NPPES record lists a practice address at 5920 Mcintyre St, Golden, CO, 80403. Phone: (303) 949-1250. Providers update this record themselves, so call before visiting.

How can I verify Chang Woon Kang, M.D.'s license?

NPPES lists Colorado license number 43586, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Chang Woon Kang, M.D. prescribe under Medicare Part D?

In 2024, Chang Woon Kang, M.D. had 8,324 Medicare Part D claims for 247 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.