DEAN G MASTRAS MD
NPI 1487625851
Radiology - Radiation Oncology in Gig Harbor, WA

Q: What is Dean Mastras's NPI number?

The NPI number for Dean Mastras is 1487625851. It was assigned to this individual provider in the NPPES registry on February 1, 2006.

Q: What is Dean Mastras'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 Dean Mastras was last updated on September 9, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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 February 01, 2006PECOS EnrolledAccepts Medicare Assignment

11511 CANTERWOOD BLVD STE 50, GIG HARBOR, WA 98332(253) 851-5155(253) 627-8792 Get Directions Write a Review

NPPES record last updated: September 9, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 9, 2020, Dec 31, 2019 (2 updates tracked since 2019).

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About Dean G Mastras Md NPPES

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

DEAN G MASTRAS MD (NPI 1487625851) is an individual radiation oncology provider in Gig Harbor, Washington, licensed in Washington (MD00029055) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Harrison Medical Center, and maintains a secondary practice location in Tacoma.

NPPES Registry Identity

NPI1487625851

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameDEAN G MASTRASCredential: MD

Location Address11511 CANTERWOOD BLVD STE 50Gig Harbor, WA 98332-5816

Mailing Address4230 Bridgeport Way W Ste BUniversity Place, WA 98466-4335 · (253) 779-6325 · Fax (253) 627-8792

Phone(253) 851-5155

Fax(253) 627-8792

Sole ProprietorYes

Medical School CMSUniversity Of Vermont College Of MedicineGraduated 1989

Enumeration DateFebruary 1, 2006

Last NPPES UpdateSeptember 9, 20202 updates tracked since enumeration

NPPES CertifiedSeptember 9, 2020

✔ NPI 1487625851 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 WA · MD00029055

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.

11511 CANTERWOOD BLVD STE 50, Gig Harbor, WA 98332

Open in Google Maps ↗

Secondary Practice Location 1

Location 1314 Martin Luther King Jr Way, Suite 11Tacoma, WA 98405-4250 · Phone (253) 627-6172 · Fax (253) 627-8792

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

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

Dean G Mastras Md 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 ID7810974391

PECOS Enrollment IDI20040701001540

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 Dean Mastras reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Peninsula Rad Onc Ctr LLC

Same address

Radiology

11511 CANTERWOOD BLVD STE 50
Gig Harbor, WA 98332

Reassigned Medicare billing, Washington enrollment
11 clinicians in this Medicare group

NPI 1366694796 (253) 779-6325

Tacoma Radiation Oncology Center Inc, Ps

11 mi

Radiation Oncology

1802 YAKIMA AVE STE 103
Tacoma, WA 98405

Reassigned Medicare billing, Washington enrollment
10 clinicians in this Medicare group

NPI 1255449146 (253) 272-1077

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.

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.

1,744 services61 patients

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.

626 services32 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.

301 services51 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.

215 services63 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.

185 services60 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.

140 services43 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.

112 services11 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.

95 services77 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.

76 services35 patients

Ct guidance for insertion of radiation therapy fields 77014

70 services18 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.

59 services58 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.

58 services32 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.

58 services58 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.

50 services22 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.

46 services25 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.

42 services36 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.

26 services15 patients

Special radiation therapy planning 77331

Special radiation therapy planning is a process to determine the most effective way to deliver radiation treatment. It involves imaging studies to map your body's internal structure, which helps in targeting the exact area needing treatment while sparing healthy tissues.

21 services12 patients

Radiation treatment management, 5 treatment sessions 77427

11 services11 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Harrison Medical Center

Acute Care Hospitals · Bremerton, WA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500039

Location2520 Cherry AvenueBremerton, WA 98310 · Kitsap County

Emergency services Birthing friendly

St Joseph Medical Center

Acute Care Hospitals · Tacoma, WA

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number500108

Location1717 South J StreetTacoma, WA 98405 · Pierce County

Emergency services Birthing friendly

Tacoma General Allenmore Hospital

Acute Care Hospitals · Tacoma, WA

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500129

Location315 S Mlk Jr WayTacoma, WA 98405 · Pierce County

Emergency services Birthing friendly

St Anthony Hospital

Acute Care Hospitals · Gig Harbor, WA

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number500151

Location11567 Canterwood Boulevard NWGig Harbor, WA 98332 · Pierce County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98332 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

$172.80 typical visit price

range $57.27 – $172.80

Typical copayment $43.20 (range $14.31 – $43.20)

Most-billed visit code 99205

Established Patient

$71.29 typical visit price

range $18.56 – $141.11

Typical copayment $17.82 (range $4.64 – $35.27)

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.

Other Providers at the Same Location NPPES

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

PENINSULA RAD ONC CTR LLC

Clinic/Center (Radiology)

11511 CANTERWOOD BLVD STE 50
GIG HARBOR, WA 98332

Pierce County (253) 779-6325

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 Dean Mastras's NPI number?

The NPI number for Dean Mastras is 1487625851. It was assigned to this individual provider in the NPPES registry on February 1, 2006.

Where is Dean Mastras located?

Dean Mastras practices at 11511 Canterwood Blvd Ste 50, Gig Harbor, WA 98332. The listed phone number is (253) 851-5155.

What is Dean Mastras's specialty?

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

Is Dean Mastras enrolled in Medicare?

Yes. Dean Mastras 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 Dean Mastras's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dean Mastras reassigns Medicare benefits to 2 organizations: Peninsula Rad Onc Ctr LLC (Gig Harbor, WA) and Tacoma Radiation Oncology Center Inc, Ps (Tacoma, WA). 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 Dean Mastras's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Dean Mastras accept?

Health plans from Ambetter Health, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Dean Mastras as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Dean Mastras affiliated with any hospitals?

According to CMS data, Dean Mastras is affiliated with Harrison Medical Center, St Joseph Medical Center, Tacoma General Allenmore Hospital and St Anthony Hospital.

When was this NPI record last updated?

The NPPES record for Dean Mastras was last updated on September 9, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.