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DR. CATHERYN M YASHAR M.D
NPI 1619049129
Radiology - Radiation Oncology in La Jolla, CA

Active since November 14, 2006PECOS EnrolledAccepts Medicare Assignment
3855 HEALTH SCIENCES DR # 0843, LA JOLLA, CA 92093(858) 822-6055(619) 543-3183 Get Directions Write a Review

NPPES record last updated: May 9, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Catheryn M Yashar M.d NPPES

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

DR. CATHERYN M YASHAR M.D (NPI 1619049129) is an individual radiation oncology provider in La Jolla, California, licensed in California (G81918) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1991).

NPPES Registry Identity

NPI1619049129
Entity TypeIndividualFemale
Primary Taxonomy2085R0001X
Provider Legal NameDR. CATHERYN M YASHARCredential: M.D
Location Address3855 HEALTH SCIENCES DR # 0843La Jolla, CA 92093-0843
Mailing Address3855 Health Sciences Dr # 0843La Jolla, CA 92093-0843 · (858) 822-6055 · Fax (619) 543-3183
Phone(858) 822-6055
Fax(619) 543-3183
Sole ProprietorNo
Medical School CMSOtherGraduated 1991
Enumeration DateNovember 14, 2006
Last NPPES UpdateMay 9, 2014
✔ NPI 1619049129 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
Licenses✔ Licensed in CA · G81918✔ Licensed in KY · 32181✔ Licensed in IN · 01046843A
Definition
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
3855 HEALTH SCIENCES DR # 0843, La Jolla, CA 92093
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Other Identifiers 4

Medicaid00G819180CA
Medicare UPINH51175
Medicare PINWG81918ACA
Medicare PINBG375ZCA

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. Catheryn M Yashar M.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 ID1456384528
PECOS Enrollment IDI20070125000079
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

2

Medicare enrollment records show Catheryn Yashar reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Proton Doctors Professional Corporation
3.2 mi
Radiation Oncology
9730 SUMMERS RIDGE RD
San Diego, CA 92121
  • Reassigned Medicare billing, California enrollment
  • 20 clinicians in this Medicare group
NPI 1093240285 (858) 549-7400
Regents Of The University Of California
9.2 mi
Diagnostic Radiology
200 W ARBOR DR
San Diego, CA 92103
  • Reassigned Medicare billing, California enrollment
  • 360 clinicians in this Medicare group
NPI 1558463927 (800) 926-8273

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 10

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.

Ct guidance for insertion of radiation therapy fields 77014
CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.
62 services30 patients
Calculation of radiation therapy dose 77300
Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.
60 services16 patients
Design and construction of complex radiation treatment device 77334
The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.
43 services13 patients
Radiation treatment management, 5 treatment sessions 77427
Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.
42 services16 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.
20 services20 patients
Complex radiation therapy planning 77263
Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92093 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
$184.71 typical visit price
range $62.10 – $184.71
Typical copayment $46.17 (range $15.52 – $46.17)
Most-billed visit code 99205
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Catheryn Yashar's NPI number?

The NPI number for Catheryn Yashar is 1619049129. It was assigned to this individual provider in the NPPES registry on November 14, 2006.

Where is Catheryn Yashar located?

Catheryn Yashar practices at 3855 Health Sciences Dr # 0843, La Jolla, CA 92093. The listed phone number is (858) 822-6055.

What is Catheryn Yashar's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Catheryn Yashar enrolled in Medicare?

Yes. Catheryn Yashar 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 Catheryn Yashar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Catheryn Yashar reassigns Medicare benefits to 2 organizations: Proton Doctors Professional Corporation (San Diego, CA) and Regents Of The University Of California (San Diego, 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 Catheryn Yashar'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 Catheryn Yashar was last updated on May 9, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.