Dr. Vivian I. Chao, MD
- Medicare services, 2021
- 727
- Part D claims, 2024
- 8,826
- Affiliated sites
- 3
- Medical groups
- 2
- State license
- 1
- Practice address
- 4803 Ward Road, Wheatridge, CO 80033
- Practice phone
- Call (303) 338-3456
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Wheat Ridge Medical Offices
Mammography / Breast Imaging Center · Wheatridge, Colorado
Find Dr. Chao's professional email, personal email and mobile number
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Dr. Vivian I. Chao is an internist in Wheatridge, Colorado
Dr. Chao practices at Wheat Ridge Medical Offices in Wheatridge, Colorado.
Dr. Chao's NPI, 1093845935, was assigned on March 7, 2007. Dr. Chao graduated from University of Wisconsin School of Medicine in 2000. Dr. Chao holds Colorado license 43821.
- NPI
- 1093845935NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911922976
- NPI enumeration date
- March 7, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (303) 338-3456
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Vivian I. Chao practices at Wheat Ridge Medical Offices in Wheatridge, Colorado
Dr. Chao's primary practice is Wheat Ridge Medical Offices, at 4803 Ward Road, Wheatridge, CO 80033. The practice phone is (303) 338-3456.
- Wheat Ridge Medical Offices4803 Ward Road, Wheatridge, CO 80033Phone(303) 338-3456
Source: Dmand AI Affiliation Data
Dr. Vivian I. Chao is affiliated with 3 sites of care and 2 medical groups
Dr. Chao's primary practice is Wheat Ridge Medical Offices in Wheatridge, Colorado. The medical group on file is Colorado Permanente Medical Group. Dmand AI also links Dr. Chao to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Vivian I. Chao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chao practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Wheat Ridge Medical Offices | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Vivian I. Chao is one of 1,668 internists in Colorado
Internal medicine is Dr. Chao's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chao is licensed in Colorado.
Specialties and state licenses
- Internal medicine, ColoradoPrimary
Internists near Dr. Chao
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. Vivian I. Chao billed Medicare for 727 services in 2021
CMS data shows 727 Medicare services from Dr. Chao across 4 procedure codes in 2021. Medicare paid $22,979 for them. Every service was in an office.
Dr. Chao compared with the Colorado median for internists, 2021
- Dr. Chao
- Colorado median
- Medicare services
- 727vs 37793% above
- Part D claims
- 8,339vs 31826.2 times
Medians across 1,630 internists in Colorado with Dmand AI profiles that report each measure.
Dr. Chao's most billed Medicare procedure codes, 2021
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. Chao and other internists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Vivian I. Chao's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Chao's median patient age at 74, with 68% women.
Dr. Chao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women68%
- Men32%
Source: Dmand AI Patient Panel Data
Dr. Vivian I. Chao wrote 8,826 Medicare Part D claims in 2024
In 2024, Dr. Chao wrote 8,826 Medicare Part D claims for 701 patients. 89% of them were for generic drugs. CMS names the drug for 8,339 of them, across 95 drugs with 11 or more claims each, at $388,300 in total drug cost. In 2023, CMS named 8,175 claims across 89 drugs.
Dr. Chao's Part D claims by kind of drug, 2024
- Generic7,815 claims89%
- Brand-name946 claims11%
- Other65 claims1%
Dr. Chao'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. Chao's Part D claims, 2024
- Opioids4%346 of 8,826 claims
- Antibiotics1%81 of 8,826 claims
- Antipsychotics, patients 65 and over0%21 of 8,826 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: 8,1752024: 8,3392%
Drugs named by CMS: 95 in 2024, 89 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
How Dr. Vivian I. Chao takes part in Medicare
Dr. Chao accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Vivian I. Chao graduated from University of Wisconsin School of Medicine
Dr. Chao graduated from University of Wisconsin School of Medicine in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Vivian I. Chao'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 Data |
| 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) |
| 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. Vivian I. Chao
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. Vivian I. Chao's NPI number?
Dr. Vivian I. Chao's NPI number is 1093845935. It was assigned on March 7, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Vivian I. Chao?
Dr. Vivian I. Chao is an internist in Wheatridge, Colorado. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Vivian I. Chao practice?
Dr. Chao practices at 4803 Ward Road, Wheatridge, CO 80033. Dr. Chao's primary practice is Wheat Ridge Medical Offices in Wheatridge, Colorado. Dmand AI also links Dr. Chao to 2 group practices and clinics and 1 medical group.
What is Dr. Vivian I. Chao's office phone number?
The practice phone on file for Dr. Chao is (303) 338-3456.
What is Dr. Vivian I. Chao's medical license number?
Dr. Chao holds Colorado license 43821.
What medical group is Dr. Vivian I. Chao part of?
Dr. Chao is linked to Colorado Permanente Medical Group. Dmand AI links Dr. Chao to 1 more medical group.
Does Dr. Vivian I. Chao accept Medicare?
Yes. CMS data shows Dr. Chao billed Medicare for 727 services in 2021, and Dr. Chao accepts Medicare assignment.
What services does Dr. Vivian I. Chao bill to Medicare?
In 2021, Dr. Chao's most billed Medicare services were medical service (0012A), medical service (0011A) and medical service (0064A).
Where did Dr. Vivian I. Chao go to medical school?
Dr. Chao graduated from University of Wisconsin School of Medicine in 2000.
What drugs does Dr. Vivian I. Chao prescribe most?
In 2024 Medicare Part D data, Dr. Chao's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Rosuvastatin Calcium.
How long has Dr. Vivian I. Chao been practicing?
Dr. Chao graduated from medical school in 2000, 26 years ago.
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