DR. IAIN JACOB MACEWAN M.D.
NPI 1326300401
Radiology - Radiation Oncology in San Diego, CA

Q: What is Iain Macewan's NPI number?

The NPI number for Iain Macewan is 1326300401. It was assigned to this individual provider in the NPPES registry on June 13, 2012.

Q: What is Iain Macewan'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 Iain Macewan was last updated on July 25, 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 June 13, 2012PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

9730 SUMMERS RIDGE RD, SAN DIEGO, CA 92121(858) 822-4048 Get Directions Write a Review

NPPES record last updated: July 25, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 25, 2022, Oct 23, 2017 (2 updates tracked since 2017).

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About Dr. Iain Jacob Macewan M.d. NPPES

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

DR. IAIN JACOB MACEWAN M.D. (NPI 1326300401) is an individual radiation oncology provider in San Diego, California, licensed in California (A129079) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (2012).

NPPES Registry Identity

NPI1326300401

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameDR. IAIN JACOB MACEWANCredential: M.D.

Location Address9730 SUMMERS RIDGE RDSan Diego, CA 92121-3101

Mailing AddressPo Box 232410San Diego, CA 92193-2410

Phone(858) 822-4048

Sole ProprietorNo

Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 2012

Enumeration DateJune 13, 2012

Last NPPES UpdateJuly 25, 20222 updates tracked since enumeration

NPPES CertifiedJuly 25, 2022

✔ NPI 1326300401 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 · A129079

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.

9730 SUMMERS RIDGE RD, San Diego, CA 92121

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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. Iain Jacob Macewan 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 ID1850660036

PECOS Enrollment IDI20170630002056

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

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

Proton Doctors Professional Corporation

0.1 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

9.5 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

California Cancer Associates For Research And Excellence Inc

309 mi

Hematology & Oncology

7130 N MILLBROOK AVE STE 100
Fresno, CA 93720

Reassigned Medicare billing, California enrollment
75 clinicians in this Medicare group

NPI 1083661607 (559) 326-1222

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 19

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.

Complex proton beam radiation treatment 77525

Complex proton beam radiation treatment is a highly precise form of radiation therapy. It uses protons, a type of subatomic particle, to destroy cancer cells. Unlike traditional radiation, it can target a specific area, reducing damage to healthy tissue.

1,100 services188 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.

861 services190 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.

724 services163 patients

Intermediate proton beam radiation treatment 77523

Intermediate proton beam radiation treatment is a precise type of radiation therapy. It uses protons instead of X-rays to treat certain types of cancer and other diseases. The protons can be directed to target the disease area with minimal damage to surrounding healthy tissue.

485 services84 patients

Injection, gadolinium-based magnetic resonance contrast agent, not otherwise specified (nos), per ml A9579

This is an MRI procedure where a gadolinium-based contrast agent is injected into your body. The agent enhances the images, making it easier to detect abnormalities. It's safe and side effects are rare. It's administered per milliliter as needed.

331 services19 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.

292 services70 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.

281 services158 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.

266 services86 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.

86 services86 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.

80 services72 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.

63 services54 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.

54 services53 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.

41 services33 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.

39 services39 patients

Nuclear medicine study from skull base to mid-thigh with ct scan 78815

A nuclear medicine study from skull base to mid-thigh with a CT scan involves using a small amount of radioactive material and CT imaging to examine body tissues and organs. This helps detect any abnormalities by providing detailed images of the body's internal structure.

36 services30 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.

35 services27 patients

Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries A9552

Fluorodeoxyglucose F-18 FDG is a radioactive drug used in PET scans. It helps doctors see how your tissues and organs are functioning. The drug is given in a specific dose, up to 45 millicuries, depending on your body size and the type of scan.

31 services27 patients

Obtaining respiratory data needed to develop the optimal radiation treatment 77293

Obtaining respiratory data is vital for optimal radiation treatment. This involves tracking your breathing patterns to ensure the precise delivery of radiation to the target area, minimizing damage to healthy tissue. It's a non-invasive process and contributes to effective treatment.

15 services14 patients

Mri scan of pelvis before and after contrast 72197

An MRI scan of the pelvis before and after contrast is a non-invasive imaging technique. It uses magnetic fields and radio waves to capture detailed images of your lower abdomen. Contrast dye, safe for the body, improves image clarity. This helps detect abnormalities more accurately.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92121 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.

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.

75/100

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

Scored as part of a group practice

Other Providers at the Same Location NPPES 8

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

SCRIPPS CLINIC MEDICAL GROUP, INC