Dr. Doris Yiafang Chih, MD, PHD

Individual provider Nephrology Physician · NPI 1477612117

Dr. Doris Yiafang Chih, MD, PHD practises Nephrology in Duarte, California. Graduated from University of California, Geffen School of Medicine in 2003, 23 years ago. Practices with City of Hope Medical Foundation, a 959-clinician group and accepts Medicare assignment. Licensed in Arizona and California.

Years since qualifying: 23
Trained at: University of California, Geffen School of Medicine
Licensed in: AZ, CA
In the registry since: 2006
Specialties on file: 4

What do these letters mean?

MD — Doctor of Medicine: A physician who completed allopathic medical school.
PHD — Doctor of Philosophy: A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1500 Duarte Rd
Duarte, CA 91010-3012
Phone: (626) 256-4673
Fax: (626) 408-3911

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary)	Taxonomy 207RN0300X · Licence A91101 (CA)
Hospitalist Physician	Taxonomy 208M00000X · Licence 67835 (AZ)
Internal Medicine Physician	Taxonomy 207R00000X · Licence A91101 (CA)
Hospitalist Physician	Taxonomy 208M00000X · Licence A91101 (CA)

Record details

NPI number	1477612117
Entity type	Individual (Type 1)
Gender	Female
Credentials	MD , PHD
Sole proprietor	No
NPI enumerated	December 8, 2006
Last updated in NPPES	September 10, 2025
Certification date	September 10, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialty	NEPHROLOGY
Medical school	UNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Graduated	2003 (23 years in practice)
Group practice	City Of Hope Medical Foundation — 959 clinicians
Accepts Medicare assignment	Yes — accepts the Medicare-approved amount
Practice locations	2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients	69
Services billed	77 a service is one billed item, such as a visit, a test or a procedure
Average patient age	71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Providence St Joseph Hospital Hospital · Eureka, CA

Also affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at City of Hope Medical Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 959 clinicians in the practice; 12 are shown here.

Dr. Shukaib Arslan, MD Hematology & Oncology Physician · Dallas, TX
Cornelia G. Banciu-Odell, MD Hospitalist Physician · Duarte, CA
Alexey Danilov, MD Internal Medicine Physician · Duarte, CA
Dr. Krisstina Lorraine Gowin, DO Hematology & Oncology Physician · Irvine, CA
Melissa Parsons, FNP-C Family Nurse Practitioner · Duarte, CA
Adam Garretson Rock, MD Medical Oncology Physician · Duarte, CA
Dr. Diya Goorah Sandhu, MD Pain Medicine (Physical Medicine & Rehabilitation) Physician · Irvine, CA
June Ellen Spilburg, ACNP Acute Care Nurse Practitioner · Duarte, CA
Dr. Neel Sagar Talwar, MD Hematology & Oncology Physician · Upland, CA
Dr. Mike Quoc Tran, MD Plastic Surgery Physician · Akron, OH
Grace Szu-En Wu, FNP, MPT, RN Physical Therapist · Duarte, CA
Dr. Lefan Zhuang, MD Blood Banking & Transfusion Medicine Physician · Duarte, CA