DR. BENJAMIN LOUIS CAHAN M.D.
NPI 1396034229
Radiology - Radiation Oncology in South Pasadena, CA

Q: What is Benjamin Cahan's NPI number?

The NPI number for Benjamin Cahan is 1396034229. It was assigned to this individual provider in the NPPES registry on March 31, 2011.

Q: What is Benjamin Cahan's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Benjamin Cahan was last updated on June 8, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since March 31, 2011PECOS EnrolledAccepts Medicare Assignment

99.12/100

CMS Quality Rating

209 FAIR OAKS AVE, SOUTH PASADENA, CA 91030(626) 396-2900 Get Directions Write a Review

NPPES record last updated: June 8, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 8, 2022, Nov 17, 2020, Mar 17, 2018 and 2 more (5 updates tracked since 2017).

On this page

About Dr. Benjamin Louis Cahan M.d. NPPES

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

DR. BENJAMIN LOUIS CAHAN M.D. (NPI 1396034229) is an individual radiation oncology provider in South Pasadena, California, licensed in California (A123974) and active in the NPI registry since March 2011. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Un Of California, Irvine, College Of Medicine (2011).

NPPES Registry Identity

NPI1396034229

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameDR. BENJAMIN LOUIS CAHANCredential: M.D.

Location Address209 FAIR OAKS AVESouth Pasadena, CA 91030-1814

Mailing AddressPo Box 512185Los Angeles, CA 90051-0185

Phone(626) 396-2900

Sole ProprietorYes

Medical School CMSUn Of California, Irvine, College Of MedicineGraduated 2011

Enumeration DateMarch 31, 2011

Last NPPES UpdateJune 8, 20225 updates tracked since enumeration

NPPES CertifiedJune 8, 2022

✔ NPI 1396034229 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

License✔ Licensed in CA · A123974

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.

209 FAIR OAKS AVE, South Pasadena, CA 91030

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Secondary Practice Locations 3

Location 115031 Rinaldi St Ste 100Mission Hills, CA 91345-1207 · Phone (818) 496-4410 · Fax (818) 496-4758

Location 226357 McBean Pkwy Ste 150Santa Clarita, CA 91355-4493 · Phone (661) 259-2990 · Fax (661) 259-1031

Location 344151 15th St W Ste 101Lancaster, CA 93534-4079 · Phone (661) 902-5600 · Fax (661) 951-0686

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. Benjamin Louis Cahan 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 ID4587962303

PECOS Enrollment IDI20160412001226

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 Reassignment

Medicare enrollment records show Benjamin Cahan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

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

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 21

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.

Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session G6015

Intensity-modulated radiation therapy (IMRT) is a type of cancer treatment. It uses advanced technology to manipulate photon beams of radiation to conform to the shape of a tumor. IMRT allows for the radiation dose to conform more precisely to the three-dimensional shape of the tumor by modulatingâ€”or controllingâ€”the intensity of the radiation beam. This can result in better tumor control and less harm to healthy tissue.

732 services49 patients

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.

715 services50 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.

204 services51 patients

Continuing radiation therapy consultation per week 77336

Continuing radiation therapy consultation per week involves regular meetings with your healthcare team. These sessions help monitor your progress, manage side effects, and adjust your treatment plan if necessary. It's a key part of ensuring the effectiveness of your radiation therapy.

200 services59 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.

198 services51 patients

Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mev G6012

Radiation therapy involves directing high-energy particles to destroy cancer cells. The technique targets 3 or more areas, using custom blocks for precise focus. Tangential ports, wedges, and rotational beams adjust the radiation's path, while compensators balance radiation dose. Electron beam therapy with 6-10 mev energy is used for deep-seated tumors.

120 services14 patients

Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy G6002

Stereoscopic x-ray guidance is a technique used in radiation therapy. It involves taking multiple X-ray images from different angles to create a 3D picture of the area to be treated. This helps accurately pinpoint the exact location for radiation delivery, ensuring the therapy is as effective as possible.

94 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.

84 services42 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.

60 services57 patients

Design and construction of radiation treatment device for high precision radiation therapy 77338

A radiation treatment device is custom-made for each patient to target cancer cells with high precision. It's designed to focus radiation on the tumor, sparing healthy tissue. This process ensures effective therapy while minimizing side effects.

52 services42 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.

52 services52 patients

High precision radiation therapy planning 77301

High precision radiation therapy planning involves detailed mapping of your body to target cancer cells accurately. Advanced imaging techniques help identify the exact location of the tumor, minimizing harm to healthy tissues. This personalized approach enhances effectiveness and reduces side effects.

41 services38 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.

36 services30 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.

34 services30 patients

Special radiation treatment 77470

Special radiation treatment is a medical procedure that uses high-energy rays to destroy or damage cancer cells. It's a targeted approach that aims to minimize harm to healthy tissues. The treatment duration varies based on individual health conditions.

29 services27 patients

Design and construction of simple radiation treatment device 77332

A simple radiation treatment device is designed and built to target specific areas in your body with high energy rays. This process is carefully planned to ensure that the radiation accurately reaches the area needing treatment, while minimizing exposure to healthy tissues.

28 services11 patients

Cranial lesion surgery using radiation over multiple sessions 77373

Cranial lesion surgery using radiation involves targeting abnormal tissue in the brain with high-energy rays. This non-invasive procedure is done over multiple sessions to gradually destroy the lesion without harming healthy tissue. It's a precise, painless process often used when traditional surgery isn't possible.

28 services11 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

27 services27 patients

Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 77280

This procedure involves gathering essential information to create the best radiation treatment plan for a specific area. It includes scanning the treatment area and using this data to calculate the precise dose of radiation needed to target the disease effectively, while sparing healthy tissue.

26 services18 patients

Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 77290

This procedure involves collecting necessary data to plan the best radiation treatment. It may cover 3 or more areas or any area requiring special attention. Data collection includes imaging scans and tests to understand the disease's extent and to tailor a precise, effective treatment plan.

23 services21 patients

3d radiation therapy planning 77295

3D radiation therapy planning is a procedure that uses computer imaging to map out the area needing treatment. This ensures the radiation targets the disease precisely, while minimizing exposure to surrounding healthy tissues. It's a key step in preparing for effective radiation therapy.

21 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91030 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

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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.

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.

99.12/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

85.23

Promoting Interoperability

100

Improvement Activities

Other Providers at the Same Location NPPES 20

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

DANIEL JAE KIM M.D.

Internal Medicine (Hematology & Oncology)