Wookjin Chun, M.D.
Internal Medicine Physician · Scottsdale, AZ
Wookjin Chun, M.D. is an internal medicine physician with a practice address in Scottsdale, Arizona, and NPI 1689688699, issued on Jul 27, 2006. Check the license (Arizona 35822, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Wookjin Chun
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 35822 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 9590 E Ironwood Square Dr Ste 125, Scottsdale, AZ 85258
- Phone
- (480) 455-3000
- Enumerated
- Jul 27, 2006
- Record last updated
- Mar 28, 2022
- Fax
- (866) 819-6115
- Medicaid ID
- 120638 AZ
- Medicare enrollment
- Enrolled (PECOS I20060901000395); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 9590 E Ironwood Square Dr Ste 125
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Wookjin Chun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 35822Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average internal medicine physician in 2024
4,319 Medicare Part D claims for 398 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 235 claims were for opioids.
Most prescribed
- Eliquis240 claims
- Atorvastatin Calcium228 claims
- Oxycodone Hcl169 claims
- Losartan Potassium141 claims
- Furosemide130 claims
- Tamsulosin Hcl105 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
- Pulmonary Consultants P.C.Mesa, AZ
- Z Medicine LLCSurprise, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Wookjin Chun among 2,853 internal medicine physician records in Arizona
Wookjin Chun, M.D. is one of 2,853 internal medicine physician records with a practice address in Arizona. 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1999 · median 2003 among the 1,643 with a school on file
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
344 internal medicine physician records list a practice address in Scottsdale
They are 344 of the 11,008 NPPES records with a practice address in Scottsdale, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Scottsdale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Saeed Behbahani, MDScottsdale, AZ 852581063466522
- Warren Butler, MDScottsdale, AZ 852581750339784
- Binoy Chandra, MDScottsdale, AZ 852581811931595
- Kianoush Cheybani, M.D.Scottsdale, AZ 852581013901578
- Chalmers Daniel, M.D.Scottsdale, AZ 852581760483424
- Stanley Horowitz, M.D.Scottsdale, AZ 852581619974094
- Douglas Lakin, M.D.Scottsdale, AZ 852581992783492
- Madonna Mallari, MDScottsdale, AZ 852581164402285
Common questions
What is Wookjin Chun, M.D.'s NPI number?
Wookjin Chun, M.D.'s National Provider Identifier (NPI) is 1689688699, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Wookjin Chun, M.D. located?
The NPPES record lists a practice address at 9590 E Ironwood Square Dr Ste 125, Scottsdale, AZ, 85258. Phone: (480) 455-3000. Providers update this record themselves, so call before visiting.
How can I verify Wookjin Chun, M.D.'s license?
NPPES lists Arizona license number 35822, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Wookjin Chun, M.D. prescribe under Medicare Part D?
In 2024, Wookjin Chun, M.D. had 4,319 Medicare Part D claims for 398 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.