Dr. Teng H. Chang, MD
- Medicare services, 2024
- 1,258
- Medicare patients, 2024
- 223
- Part D claims, 2024
- 8,505
- Hospital affiliations
- 3
- Industry payments
- $1,484
- Practice address
- 9695 S Yosemite St, Lone Tree, CO 80124
- Practice phone
- Call (303) 763-4900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
New West Physicians Inc
Lone Tree, Colorado
Find Dr. Chang's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Teng H. Chang is an internist in Lone Tree, Colorado
Dr. Chang practices at New West Physicians Inc in Lone Tree, Colorado.
Dr. Chang's NPI, 1255312328, was assigned on November 7, 2005. Dr. Chang graduated from University of Kansas School of Med (KC/Wich/Sal) in 2002. Dr. Chang holds Colorado license DR.0043787.
- NPI
- 1255312328NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769402395
- NPI enumeration date
- November 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (303) 763-4900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Teng H. Chang practices at New West Physicians Inc in Lone Tree, Colorado
Dr. Chang's primary practice is New West Physicians Inc, at 9695 S Yosemite St, Lone Tree, CO 80124 in Douglas County. The practice phone is (303) 763-4900.
- New West Physicians Inc9695 S Yosemite St, Lone Tree, CO 80124 · Douglas CountyPhone(303) 763-4900
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Teng H. Chang is affiliated with 7 sites of care and 3 medical groups
Dr. Chang's primary practice is New West Physicians Inc in Lone Tree, Colorado. Dr. Chang is also affiliated with AdventHealth Littleton. The medical group on file is Optumcare Colorado Medical Group. Dmand AI also links Dr. Chang to 2 more hospitals, 3 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Teng H. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| New West Physicians Inc | Available with a free account |
| +6 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Teng H. Chang is one of 1,668 internists in Colorado
Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is licensed in Colorado.
Specialties and state licenses
- Internal medicine, ColoradoPrimary
Internists near Dr. Chang
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Teng H. Chang billed Medicare for 1,258 services in 2024
CMS data shows 1,258 Medicare services from Dr. Chang across 9 procedure codes in 2024, for 223 Medicare patients. Medicare paid $67,348 for them. Every service was in an office.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6012024: 603No change
- Tests and treatments
- 2023: 1782024: 507185%
- Other services
- 2023: 1072024: 13728%
- Lab and pathology
- 2023: 432024: 1174%
Dr. Chang compared with the Colorado median for internists, 2024
- Dr. Chang
- Colorado median
- Medicare services
- 1,258vs 3773.3 times
- Medicare patients
- 223vs 18620% above
- Part D claims
- 7,586vs 31823.9 times
Medians across 1,630 internists in Colorado with Dmand AI profiles that report each measure.
Dr. Chang's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other internists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Teng H. Chang treated 223 Medicare patients in 2024, average age 74
CMS counts 223 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 125 patients. 75% of them have high cholesterol, and 60% have high blood pressure. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 69, with 36% women.
Dr. Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chang's Medicare patients by sex, 2024
- Women9040%
- Men13360%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High cholesterol75%
- High blood pressure60%
- Arthritis43%
- Ischemic heart disease30%
- Chronic kidney disease22%
- Diabetes18%
- Mood disorders18%
- Depression16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women36%
- Men63%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Teng H. Chang wrote 8,505 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 8,505 Medicare Part D claims for 733 patients. 85% of them were for generic drugs. CMS names the drug for 7,586 of them, across 142 drugs with 11 or more claims each, at $468,149 in total drug cost. In 2023, CMS named 6,369 claims across 134 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic7,237 claims85%
- Brand-name1,230 claims14%
- Other38 claims0%
Dr. Chang's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chang's Part D claims, 2024
- Opioids2%191 of 8,505 claims
- Antibiotics4%336 of 8,505 claims
- Antipsychotics, patients 65 and over1%49 of 8,505 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6,3692024: 7,58619%
Drugs named by CMS: 142 in 2024, 134 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Teng H. Chang offers telehealth to Medicare patients
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Teng H. Chang received $1,484 in industry payments from 2016 to 2025
CMS Open Payments shows 80 general payments to Dr. Chang from 23 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $379.
General payments to Dr. Chang by program year, 2016 to 2025
Companies that paid Dr. Chang the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Teng H. Chang graduated from University of Kansas School of Med (KC/Wich/Sal)
Dr. Chang graduated from University of Kansas School of Med (KC/Wich/Sal) in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Teng H. Chang's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Teng H. Chang
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Teng H. Chang's NPI number?
Dr. Teng H. Chang's NPI number is 1255312328. It was assigned on November 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Teng H. Chang?
Dr. Teng H. Chang is an internist in Lone Tree, Colorado. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Teng H. Chang practice?
Dr. Chang practices at 9695 S Yosemite St, Lone Tree, CO 80124. Dr. Chang's primary practice is New West Physicians Inc in Lone Tree, Colorado. Dmand AI also links Dr. Chang to 2 hospitals, 3 group practices and clinics and 2 medical groups.
What is Dr. Teng H. Chang's office phone number?
The practice phone on file for Dr. Chang is (303) 763-4900.
What is Dr. Teng H. Chang's medical license number?
Dr. Chang holds Colorado license DR.0043787.
Which hospitals is Dr. Teng H. Chang affiliated with?
Dr. Chang is affiliated with AdventHealth Littleton. Dmand AI links Dr. Chang to 2 more hospitals.
What medical group is Dr. Teng H. Chang part of?
Dr. Chang is linked to Optumcare Colorado Medical Group. Dmand AI links Dr. Chang to 2 more medical groups.
Does Dr. Teng H. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 1,258 services in 2024, and Dr. Chang accepts Medicare assignment.
Does Dr. Teng H. Chang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chang as offering telehealth services.
How many Medicare patients does Dr. Teng H. Chang see?
CMS counts 223 Medicare patients who saw Dr. Chang in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Teng H. Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, established patient (99214), health assessment (96127) and medicare service (G0439).
Where did Dr. Teng H. Chang go to medical school?
Dr. Chang graduated from University of Kansas School of Med (KC/Wich/Sal) in 2002.
What drugs does Dr. Teng H. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Rosuvastatin Calcium.
Has Dr. Teng H. Chang received payments from drug or device companies?
CMS Open Payments shows $1,484 in general payments to Dr. Chang from 23 companies from 2016 to 2025. The largest total came from Allergan Inc.
How long has Dr. Teng H. Chang been practicing?
Dr. Chang graduated from medical school in 2002, 24 years ago.
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