CONSTANTINE A. MANTZ MD
NPI 1396743290
Radiology - Therapeutic Radiology in Cape Coral, FL

Q: What is Constantine Mantz's NPI number?

The NPI number for Constantine Mantz is 1396743290. It was assigned to this individual provider in the NPPES registry on July 13, 2005. The provider is also known as Gus A Mantzavrakos MD.

Q: What is Constantine Mantz's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Therapeutic Radiology, with taxonomy code 2085R0203X.

Q: When was this NPI record last updated?

The NPPES record for Constantine Mantz was last updated on February 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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 July 13, 2005PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

1419 SE 8TH TER, CAPE CORAL, FL 33990(239) 772-3202(239) 773-8346 Get Directions Write a Review

NPPES record last updated: February 25, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 25, 2025, Apr 25, 2017 (2 updates tracked since 2017).

On this page

About Constantine A. Mantz Md NPPES

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

CONSTANTINE A. MANTZ MD (NPI 1396743290) is an individual therapeutic radiology provider in Cape Coral, Florida, licensed in Florida (ME80838) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Lee Memorial Hospital, and is a graduate of University Of Chicago, Pritzker School Of Medicine (1995).

NPPES Registry Identity

NPI1396743290

Entity TypeIndividualMale

Primary Taxonomy2085R0203X

Provider Legal NameCONSTANTINE A. MANTZCredential: MD

Location Address1419 SE 8TH TERCape Coral, FL 33990-3213

Mailing Address2234 Colonial BlvdFort Myers, FL 33907-1412 · (239) 931-7342 · Fax (239) 931-7385

Phone(239) 772-3202

Fax(239) 773-8346

Sole ProprietorNo

Medical School CMSUniversity Of Chicago, Pritzker School Of MedicineGraduated 1995

Enumeration DateJuly 13, 2005

Last NPPES UpdateFebruary 25, 20252 updates tracked since enumeration

NPPES CertifiedFebruary 25, 2025

✔ NPI 1396743290 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Therapeutic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0203X

License✔ Licensed in FL · ME80838

Definition

Therapeutic Radiology certificate name was changed to Radiation Oncology. Use Radiation Oncology.

1419 SE 8TH TER, Cape Coral, FL 33990

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Other Names 1

Former Name (1)Gus A Mantzavrakos Md

Other Identifiers 12

Other00794FL · Univ. Hlthcr. Provider #

Other160065FL · Wellcare (staywell-medicaid And Wellcare-medicare)

Other4968199-001FL · Cigna Provider Number

OtherME80838AFL · Metcare Provider Id #

Other8329FL · Avmed Pin Number

Other207227FL · Amerigroup Group #

Other592485899FL · Metcare Vendor Id #

Other7082137FL · Aetna Provider Number

Other24-00187FL · Utd. Hlthcr. Provider #

Medicaid259822100FL

Other85447FL · Op. Eng. Loc. 825 Prov. #

Other272205FL · Avmed Provider Number

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter of Alabama, Cigna Healthcare and more.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

Constantine A. Mantz 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 ID9032218532

PECOS Enrollment IDI20070625000396

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 Constantine Mantz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

21st Century Oncology LLC

0.4 mi

Urology

507 DEL PRADO BLVD S
Cape Coral, FL 33990

Reassigned Medicare billing, Florida enrollment
Medicare enrollment name: Genesiscare Usa Of Florida LLC
284 clinicians in this Medicare group

NPI 1225074115 (239) 772-0500

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 40

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.

3,626 services159 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.

3,277 services148 patients

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967

Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.

2,750 services28 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.

1,330 services212 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.

950 services273 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.

794 services232 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.

730 services62 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.

396 services41 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.

394 services291 patients

Piflufolastat f-18, diagnostic, 1 millicurie A9595

Piflufolastat F-18 is a radioactive diagnostic agent used in PET scans. It helps visualize certain cells in your body, aiding doctors in diagnosing specific conditions. This service involves injecting 1 millicurie of the agent into your body.

386 services41 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.

366 services230 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.

310 services59 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.

260 services236 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.

213 services183 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.

210 services183 patients

Leuprolide acetate (for depot suspension), 7.5 mg J9217

Leuprolide acetate is a medication that helps regulate certain hormone levels in your body. It's injected into your muscle once a month. This treatment can help manage various health conditions related to hormone imbalance. Always follow your doctor's instructions.

151 services21 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.

148 services131 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.

118 services97 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.

116 services85 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.

112 services83 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.

112 services104 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.

108 services91 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

102 services102 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.

75 services75 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.

69 services58 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.

66 services41 patients

Management of cranial lesion surgery using radiation over multiple sessions 77435

This procedure involves using targeted radiation to treat a lesion in the brain over several sessions. The radiation destroys the abnormal cells, helping to control or eliminate the lesion. It's a non-invasive treatment, meaning no surgical cuts are made.

63 services56 patients

Special medical radiation therapy consultation 77370

A special medical radiation therapy consultation involves discussing the use of high-energy radiation to treat diseases, primarily cancer. It's a chance to understand the process, potential side effects, and benefits. It is a key step in planning your treatment.

43 services42 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.

41 services35 patients

Special radiation therapy planning for delivery of external radiation 77321

Special radiation therapy planning involves mapping your body's needs for external radiation treatment. This process uses advanced imaging techniques to pinpoint the exact area requiring treatment, ensuring the radiation is delivered accurately and effectively, while minimizing exposure to healthy tissues.

40 services36 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.

40 services34 patients

High dose radiation therapy, 2-12 channels 77771

High-dose radiation therapy with 2-12 channels is a treatment where concentrated radiation beams target specific areas in the body to destroy cancer cells. The number of channels refers to how the radiation is delivered from different angles for optimal treatment.

39 services21 patients

Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle 96402

This procedure involves the injection of hormone-based anti-cancer drugs under the skin or into a muscle. These medications help to slow down or stop the growth of certain types of cancer cells. The process is usually quick and can be performed in a clinic or hospital.

29 services21 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

29 services29 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

25 services22 patients

Ct scan of soft tissue of neck with contrast 70491

A CT scan of the neck with contrast is a non-invasive imaging procedure. A special dye is administered to highlight the soft tissues in your neck, making them easier to see. This helps detect issues like infections, tumors, or other abnormalities.

24 services22 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

19 services19 patients

Complex radiation therapy planning for delivery of external radiation 77307

Complex radiation therapy planning involves creating a detailed plan to deliver targeted radiation doses. The process includes imaging scans to identify the area needing treatment, and designing a specific radiation plan to protect healthy tissue while effectively treating the disease.

18 services14 patients

Ct scan of chest with contrast 71260

A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.

15 services14 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.

12 services12 patients

Hospital Affiliations CMS Care Compare 3

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

Lee Memorial Hospital

Acute Care Hospitals · Fort Myers, FL

5/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number100012

Location2776 Cleveland AveFort Myers, FL 33901 · Lee County

Emergency services Birthing friendly

Gulf Coast Medical Center Lee Health

Acute Care Hospitals · Fort Myers, FL

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number100220

Location13681 Doctors WayFort Myers, FL 33912 · Lee County

Emergency services

Cape Coral Hospital

Acute Care Hospitals · Cape Coral, FL

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number100244

Location636 Del Prado BlvdCape Coral, FL 33990 · Lee County

Emergency services Birthing friendly

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

Individually scored

Reported Quality Measures

Breast Cancer Screening

Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer

43%89 patients2/55-star benchmark: 92%

Cervical Cancer Screening

Percentage of women 21-64 years of age who were screened for cervical cancer using either of the following criteria: - Women age 21-64 who had cervical cytology performed every 3 years - Women age 30-64 who had cervical cytology/human papillomavirus (HPV)…

44%59 patients

Closing the Referral Loop: Receipt of Specialist Report

Percentage of patients with referrals, regardless of age, for which the referring provider receives a report from the provider to whom the patient was referred

10%410 patients1/55-star benchmark: 95%

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

64%330 patients4/55-star benchmark: 85%

Medication Reconciliation

The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.

88%49 patients4/55-star benchmark: 100%

Oncology: Medical and Radiation - Pain Intensity Quantified

Percentage of patient visits, regardless of patient age, with a diagnosis of cancer currently receiving chemotherapy or radiation therapy in which pain intensity is quantified

26%333 patients1/55-star benchmark: 100%

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.

19%108 patients1/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

71%505 patients3/55-star benchmark: 97%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user

Patients screenedForUse: 79% · 344 patients

Patients tobacco: 78% · 344 patients

78%23 patients4/55-star benchmark: 98%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

40%108 patients2/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…

10%108 patients1/55-star benchmark: 79%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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 Constantine Mantz's NPI number?

The NPI number for Constantine Mantz is 1396743290. It was assigned to this individual provider in the NPPES registry on July 13, 2005. The provider is also known as Gus A Mantzavrakos MD.

Where is Constantine Mantz located?

Constantine Mantz practices at 1419 SE 8th Ter, Cape Coral, FL 33990. The listed phone number is (239) 772-3202.

What is Constantine Mantz's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Therapeutic Radiology, with taxonomy code 2085R0203X.

Is Constantine Mantz enrolled in Medicare?

Yes. Constantine Mantz 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 organization bills Medicare for Constantine Mantz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Constantine Mantz reassigns Medicare benefits to 21st Century Oncology LLC (Cape Coral, FL). The 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 Constantine Mantz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Constantine Mantz accept?

Health plans from Ambetter Health, Ambetter of Alabama, Cigna HealthCare of Florida, Inc., Cigna Healthcare and Florida Blue (BlueCross BlueShield FL) and 4 other insurers list Constantine Mantz 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 Constantine Mantz affiliated with any hospitals?

According to CMS data, Constantine Mantz is affiliated with Lee Memorial Hospital, Gulf Coast Medical Center Lee Health and Cape Coral Hospital.

When was this NPI record last updated?

The NPPES record for Constantine Mantz was last updated on February 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.