NPPES file of Aug 9, 2026

Douglas Chin-Lu Chang, M.D.

Internal Medicine Physician · Phoenix, AZ

Douglas Chin-Lu Chang, M.D. is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1093914822, issued on Jul 12, 2007. Check the license on the Arizona Medical Board; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1093914822
Name
Douglas Chin-Lu Chang
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
233253-1 NY
Self-reported in NPPES; status is on the state search
Practice location
4212 N 16TH St, Phoenix, AZ 85016
Phone
(602) 263-1200
Enumerated
Jul 12, 2007
Record last updated
May 20, 2026
Fax
(602) 263-1619
Medicare enrollment
Enrolled (PECOS I20070914000413); accepts Medicare assignment
Medical or professional school
Rutgers New Jersey Medical School, 2002
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 internal medicine physician records → All 2,853 in Arizona → Look up another NPI →

Also registered at 4212 N 16TH St

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

  1. Andrea Aarseth, RNCritical Care Medicine Registered Nurse1235297292
  2. Deirdre Abellada, RN, PHNRegistered Nurse1710259395
  3. Joby Abraham, RNRegistered Nurse1376814046
  4. Frederick Abramek, MS, PHARMACISTPharmacist1528278736
  5. Karen AcostaRegistered Nurse1659748671
  6. Danton AdairRegistered Nurse1114387917

Verify Douglas Chin-Lu Chang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical BoardCheck 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 Arizona 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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Bills Medicare through one group practice

  1. Dhew Ind Hlth SV Hlth Svs And Mntl Hlth AdmPhoenix, AZ

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

Douglas Chin-Lu Chang among 2,853 internal medicine physician records in Arizona

Douglas Chin-Lu Chang, 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 2007, is newer than 45% of them.

  • NPI issued2007 · 45% of these records are older, 47% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated2002 · median 2003 among the 1,643 with a school on file
  • Record last updated2026 · 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).

695 internal medicine physician records list a practice address in Phoenix

They are 695 of the 31,399 NPPES records with a practice address in Phoenix, and 2,853 internal medicine physician records in Arizona.

All 2,853 in Arizona → Every provider in Phoenix → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Omer Farooq, M.D.Phoenix, AZ 850161952333262
  2. Laurie Farricielli, MDPhoenix, AZ 850161124014725
  3. Coleene Fernando, MDPhoenix, AZ 850161952383119
  4. Edward Hardiman, MDPhoenix, AZ 850161255341897
  5. Paden Hendrickson, MDPhoenix, AZ 850161154434637
  6. Bruce Packer, M.D.Phoenix, AZ 850161356348338
  7. Arthur Pelberg, M.D.Phoenix, AZ 850161285749424
  8. Maitreyi Prabhu, MDPhoenix, AZ 850161619994647

Common questions

What is Douglas Chin-Lu Chang, M.D.'s NPI number?

Douglas Chin-Lu Chang, M.D.'s National Provider Identifier (NPI) is 1093914822, issued on Jul 12, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Douglas Chin-Lu Chang, M.D. located?

The NPPES record lists a practice address at 4212 N 16TH St, Phoenix, AZ, 85016. Phone: (602) 263-1200. Providers update this record themselves, so call before visiting.

How can I verify Douglas Chin-Lu Chang, M.D.'s license?

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.

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.