Daniel H. Chang, M.S., M.D.
Internal Medicine Physician · Colton, CA
Daniel H. Chang, M.S., M.D. is an internal medicine physician with a practice address in Colton, California, and NPI 1568993665, issued on Mar 21, 2017. Check the license (California A166287, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Daniel H. Chang
- Credential
- M.S., M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A166287 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 N Pepper Ave, Colton, CA 92324
- Phone
- (714) 262-6963
- Enumerated
- Mar 21, 2017
- Record last updated
- Dec 14, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200918000853); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 400 N Pepper Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shangrila AbaricoRegistered Nurse1609659325
- Susana AbaroRegistered Nurse1114425162
- Patricia AbbaRegistered Nurse1013188838
- Mohammad Hossein Abbasi, MD, MPHStudent in an Organized Health Care Education/Training Program1609622166
- Ala AbedrabboCertified Registered Nurse Anesthetist1972333144
- Mary AboagyeLicensed Vocational Nurse1982875605
Verify Daniel H. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A166287Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
266 Medicare Part D claims for 99 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Pantoprazole Sodium17 claims
- Nifedipine Er13 claims
- Lantus11 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 one group practice
- Quantum Healthcare Medical Associates IncColton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daniel H. Chang among 17,696 internal medicine physician records in California
Daniel H. Chang, M.S., M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2004 among the 11,065 with a school on file
- Record last updated2019 · 61% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
67 internal medicine physician records list a practice address in Colton
They are 67 of the 2,459 NPPES records with a practice address in Colton, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Colton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sarkis Arabian, DOColton, CA 923241336202266
- Yanfei Chen, MDColton, CA 923241437103322
- Calvin Duong, M.D.Colton, CA 923241184646119
- Anthony Enenmoh, MDColton, CA 923241811931603
- James Ericson, MDColton, CA 923241881731032
- Douglas Hay, MDColton, CA 923241386690980
- Ireny Ibrahim, MDColton, CA 923241811944598
- Cecilia Katz, MDColton, CA 923241376585349
Common questions
What is Daniel H. Chang, M.S., M.D.'s NPI number?
Daniel H. Chang, M.S., M.D.'s National Provider Identifier (NPI) is 1568993665, issued on Mar 21, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Daniel H. Chang, M.S., M.D. located?
The NPPES record lists a practice address at 400 N Pepper Ave, Colton, CA, 92324. Phone: (714) 262-6963. Providers update this record themselves, so call before visiting.
How can I verify Daniel H. Chang, M.S., M.D.'s license?
NPPES lists California license number A166287, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Daniel H. Chang, M.S., M.D. prescribe under Medicare Part D?
In 2024, Daniel H. Chang, M.S., M.D. had 266 Medicare Part D claims for 99 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.