1. Home
  2. Directory
  3. California
  4. Pasadena
  5. Internal Medicine
  6. NPI Profile

DR. YUAN YUAN M.D., PH.D.
NPI 1073664660
Internal Medicine - Medical Oncology in Pasadena, CA

Active since January 12, 2007PECOS EnrolledAccepts Medicare Assignment
85.71/100
CMS Quality Rating
10 CONGRESS ST STE 200, PASADENA, CA 91105(424) 314-0190(424) 314-0193 Get Directions Write a Review

NPPES record last updated: March 25, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 31, 2022, Nov 25, 2020, Jul 31, 2017 and 1 more (4 updates tracked since 2017).

About Dr. Yuan Yuan M.d., Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. YUAN YUAN M.D., PH.D. (NPI 1073664660) is an individual medical oncology provider in Pasadena, California, licensed in California (A107260) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Other (1994).

NPPES Registry Identity

NPI1073664660
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameDR. YUAN YUANCredential: M.D., PH.D.
Location Address10 CONGRESS ST STE 200Pasadena, CA 91105-3023
Mailing Address4140 W 190th StTorrance, CA 90504-5513 · (424) 314-0190
Phone(424) 314-0190
Fax(424) 314-0193
Sole ProprietorNo
Medical School CMSOtherGraduated 1994
Enumeration DateJanuary 12, 2007
Last NPPES UpdateMarch 25, 20244 updates tracked since enumeration
NPPES CertifiedMarch 25, 2024
✔ NPI 1073664660 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in CA · A107260
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
Also ListedInternal MedicineTaxonomy 207R00000X · License A107260 (CA)
Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License 254938 (NY)
10 CONGRESS ST STE 200, Pasadena, CA 91105
Open in Google Maps ↗

Secondary Practice Locations 3

Location 11500 East Duarte Rd, City of Hope National Cancer CenterDuarte, CA 91010 · Phone (626) 256-4673
Location 2625 S Fair Oaks Ave Ste 345Pasadena, CA 91105-2677 · Phone (424) 314-0203 · Fax (424) 314-0206
Location 39090 Wilshire Blvd Ste 300Beverly Hills, CA 90211-1848 · Phone (818) 888-8680 · Fax (818) 888-1886

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Yuan Yuan M.d., Ph.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8426102351
PECOS Enrollment IDI20090812000334
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Yuan Yuan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

City Of Hope Medical Foundation
10 mi
Hematology & Oncology
1500 DUARTE RD
Duarte, CA 91010
  • Reassigned Medicare billing, California enrollment
  • 1,335 clinicians in this Medicare group
NPI 1871886366 (626) 256-4673
Cedars-Sinai Medical Care Foundation
13 mi
Specialist
6500 WILSHIRE BLVD FL 15
Los Angeles, CA 90048
  • Reassigned Medicare billing, California enrollment
  • 2,118 clinicians in this Medicare group
NPI 1316984388 (310) 385-3200
Cedars-Sinai Medical Center
14 mi
General Acute Care Hospital
8700 BEVERLY BLVD
Los Angeles, CA 90048
  • Reassigned Medicare billing, California enrollment
  • 1,001 clinicians in this Medicare group
NPI 1639172372 (323) 866-8600

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
217 services63 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
175 services73 patients
Injection, zoledronic acid, 1 mg J3489
Zoledronic acid is a medication given via injection to strengthen bones. It's often used in patients with osteoporosis or certain types of cancer. The injection helps reduce the risk of fractures and other bone complications.
72 services13 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
53 services53 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
42 services33 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
36 services31 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.71/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality85.67
Promoting Interoperability100
Improvement Activities40
Cost61.47

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Capecitabine, oral, 500 mg J8521
Treatment-Treatment - Miscellaneous · category RX029N
5 suppliers29 claims2,324 services$0.71 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
5 suppliers26 claims26 services$18.97 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DOYOUN KIM NP
Nurse Practitioner (Family)
10 CONGRESS ST STE 200
PASADENA, CA 91105
Los Angeles County (424) 314-0190
ELAINE CRAMER NP
Nurse Practitioner (Family)
10 CONGRESS ST STE 200
PASADENA, CA 91105
Los Angeles County (424) 314-0190

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Yuan Yuan's NPI number?

The NPI number for Yuan Yuan is 1073664660. It was assigned to this individual provider in the NPPES registry on January 12, 2007.

Where is Yuan Yuan located?

Yuan Yuan practices at 10 Congress St Ste 200, Pasadena, CA 91105. The listed phone number is (424) 314-0190.

What is Yuan Yuan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Yuan Yuan enrolled in Medicare?

Yes. Yuan Yuan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Yuan Yuan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Yuan Yuan reassigns Medicare benefits to 3 organizations: City Of Hope Medical Foundation (Duarte, CA), Cedars-Sinai Medical Care Foundation (Los Angeles, CA) and Cedars-Sinai Medical Center (Los Angeles, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Yuan Yuan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Yuan Yuan was last updated on March 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.