Teng H. Chang, M.D.
Internal Medicine Physician · Littleton, CO
Teng H. Chang, M.D. is an internal medicine physician with a practice address in Littleton, Colorado, and NPI 1255312328, issued on Nov 7, 2005. Check the license (Colorado DR.0043787, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Teng H. Chang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- DR.0043787 CO
Self-reported in NPPES; status is on the state search - Practice location
- 8199 Southpark LN Ste 100, Littleton, CO 80120
- Phone
- (303) 730-3332
- Enumerated
- Nov 7, 2005
- Record last updated
- Apr 16, 2026
- Fax
- (303) 730-7766
- Medicaid ID
- 9000198879 CO
- Medicare enrollment
- Enrolled (PECOS I20051130000276); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 8199 Southpark LN Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danielle Chamberlain, PA-CPhysician Assistant1134997547
- Robert Douglas, MDFamily Medicine Physician1366532236
- Jason Pereira, MDInternal Medicine Physician1003903139
- Michelle SpektorMedical Physician Assistant1124759626
- Kimberly Winter, MDFamily Medicine Physician1265533814
Verify Teng H. Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0043787Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
8,505 Medicare Part D claims for 733 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 191 claims were for opioids.
Most prescribed
- Atorvastatin Calcium443 claims
- Levothyroxine Sodium397 claims
- Rosuvastatin Calcium280 claims
- Amlodipine Besylate266 claims
- Omeprazole224 claims
- Losartan Potassium208 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
- Optumcare Colorado Medical Group LLCColorado Springs, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Teng H. Chang among 2,046 internal medicine physician records in Colorado
Teng H. Chang, M.D. is one of 2,046 internal medicine physician records with a practice address in Colorado. 71% 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, 90% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2002 · median 2006 among the 1,090 with a school on file
- Record last updated2026 · 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
60 internal medicine physician records list a practice address in Littleton
They are 60 of the 3,918 NPPES records with a practice address in Littleton, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Littleton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lisa Gidday, MDLittleton, CO 801201518948736
- William Gipson, M.D.Littleton, CO 801201023003316
- Charles Lee, MDLittleton, CO 801201194706978
- Ronald Miller, MDLittleton, CO 801201639153141
- Jason Pereira, MDLittleton, CO 801201003903139
- Kathleen Weiss, MDLittleton, CO 801201104077585
- David Yu, M.D.Littleton, CO 801201114182003
- Stephanus Tjan, M.D.Littleton, CO 801211609888429
Common questions
What is Teng H. Chang, M.D.'s NPI number?
Teng H. Chang, M.D.'s National Provider Identifier (NPI) is 1255312328, issued on Nov 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Teng H. Chang, M.D. located?
The NPPES record lists a practice address at 8199 Southpark LN Ste 100, Littleton, CO, 80120. Phone: (303) 730-3332. Providers update this record themselves, so call before visiting.
How can I verify Teng H. Chang, M.D.'s license?
NPPES lists Colorado license number DR.0043787, 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 Teng H. Chang, M.D. prescribe under Medicare Part D?
In 2024, Teng H. Chang, M.D. had 8,505 Medicare Part D claims for 733 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.