Dr. Doris Yiafang Chih, MD, PhD
- Medicare services, 2024
- 55
- Medicare patients, 2024
- 69
- Hospital affiliations
- 1
- Industry payments
- $18
- Medical groups
- 4
- Practice address
- 1500 Duarte Rd, Duarte, CA 91010
- Practice phone
- Call (800) 826-4673
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
City of Hope Comprehensive Cancer Center - Duarte
Duarte, California
Find Dr. Chih's professional email, personal email and mobile number
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Dr. Doris Yiafang Chih is a hospitalist in Duarte, California
Dr. Chih practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
Dr. Chih's NPI, 1477612117, was assigned on December 8, 2006. Dr. Chih graduated from University of California, Geffen School of Medicine in 2003. Dr. Chih holds Arizona license 67835.
- NPI
- 1477612117NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254431562
- NPI enumeration date
- December 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (800) 826-4673
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Doris Yiafang Chih practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California
Dr. Chih's primary practice is City of Hope Comprehensive Cancer Center - Duarte, at 1500 Duarte Rd, Duarte, CA 91010 in Los Angeles County. The practice phone is (800) 826-4673.
- City of Hope Comprehensive Cancer Center - Duarte1500 Duarte Rd, Duarte, CA 91010 · Los Angeles CountyPhone(800) 826-4673
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Doris Yiafang Chih is affiliated with 3 sites of care and 4 medical groups
Dr. Chih's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dr. Chih is also affiliated with Providence St. Joseph Hospital Eureka. The medical group on file is St. Jude Heritage Medical Group. Dmand AI also links Dr. Chih to 3 more medical groups and 1 other site, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Doris Yiafang Chih's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chih practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| City of Hope Comprehensive Cancer Center - Duarte | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Doris Yiafang Chih is one of 3,186 hospitalists in California
Hospitalist is Dr. Chih's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dmand AI has Dr. Chih's licenses on file in 2 states: Arizona and California.
Specialties and state licenses
- Hospitalist, ArizonaPrimary
- Internal medicine, California
Hospitalists near Dr. Chih
Counts of hospitalists 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. Doris Yiafang Chih billed Medicare for 55 services in 2024
CMS data shows 55 Medicare services from Dr. Chih across 2 procedure codes in 2024, for 69 Medicare patients. Medicare paid $7,292 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chih's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1932024: 5572%
Dr. Chih compared with the California median for hospitalists, 2024
- Dr. Chih
- California median
- Medicare services
- 55vs 43087% below
- Medicare patients
- 69vs 20166% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Chih'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. Chih and other hospitalists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Doris Yiafang Chih treated 69 Medicare patients in 2024, average age 71
CMS counts 69 Medicare patients who saw Dr. Chih in 2024. The largest group is 65 to 74, with 37 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 48% are also on Medicaid. Their average risk score is 2.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Chih's median patient age at 71, with 63% women.
Dr. Chih's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chih's Medicare patients by sex, 2024
- Women4058%
- Men2942%
Chronic conditions among Dr. Chih's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Heart failure55%
- Mood disorders54%
- Anxiety52%
- Arthritis52%
- Depression52%
- Diabetes49%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chih's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women63%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Doris Yiafang Chih takes part in Medicare
Dr. Chih 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. Doris Yiafang Chih received $18 in industry payments in 2019
CMS Open Payments shows 2 general payments to Dr. Chih from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. bioMerieux paid the most, $18.
Companies that paid Dr. Chih the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Doris Yiafang Chih graduated from University of California, Geffen School of Medicine
Dr. Chih graduated from University of California, Geffen School of Medicine in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Doris Yiafang Chih'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 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 DataMedicare Physician & Other Practitioners - 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. Doris Yiafang Chih
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. Doris Yiafang Chih's NPI number?
Dr. Doris Yiafang Chih's NPI number is 1477612117. It was assigned on December 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Doris Yiafang Chih?
Dr. Doris Yiafang Chih is a hospitalist in Duarte, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Doris Yiafang Chih practice?
Dr. Chih practices at 1500 Duarte Rd, Duarte, CA 91010. Dr. Chih's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dmand AI also links Dr. Chih to 3 medical groups and 1 other site.
What is Dr. Doris Yiafang Chih's office phone number?
The practice phone on file for Dr. Chih is (800) 826-4673.
What is Dr. Doris Yiafang Chih's medical license number?
Dr. Chih holds Arizona license 67835, one of the licenses on file in 2 states.
Which states has Dr. Doris Yiafang Chih been licensed in?
Dmand AI has state licenses on file for Dr. Chih in Arizona and California.
Which hospitals is Dr. Doris Yiafang Chih affiliated with?
Dr. Chih is affiliated with Providence St. Joseph Hospital Eureka.
What medical group is Dr. Doris Yiafang Chih part of?
Dr. Chih is linked to St. Jude Heritage Medical Group. Dmand AI links Dr. Chih to 3 more medical groups.
Does Dr. Doris Yiafang Chih accept Medicare?
Yes. CMS data shows Dr. Chih billed Medicare for 55 services in 2024, and Dr. Chih accepts Medicare assignment.
How many Medicare patients does Dr. Doris Yiafang Chih see?
CMS counts 69 Medicare patients who saw Dr. Chih in 2024, with an average age of 71.
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What services does Dr. Doris Yiafang Chih bill to Medicare?
In 2024, Dr. Chih's most billed Medicare services were hospital inpatient care (99223) and hospital inpatient care (99222).
Where did Dr. Doris Yiafang Chih go to medical school?
Dr. Chih graduated from University of California, Geffen School of Medicine in 2003.
Has Dr. Doris Yiafang Chih received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Dr. Chih from 1 company from 2019 to 2019. The largest total came from bioMerieux.
How long has Dr. Doris Yiafang Chih been practicing?
Dr. Chih graduated from medical school in 2003, 23 years ago.
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