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DR. OTHON ILIOPOULOS MD
NPI 1447352448
Internal Medicine - Medical Oncology in Boston, MA

Active since September 01, 2006PECOS EnrolledAccepts Medicare Assignment
100 BLOSSOM STREET, YAW 7 MASSACHUSETTS GENERAL HOSPITAL, BOSTON, MA 02114(617) 724-3404(617) 726-8623 Get Directions Write a Review

NPPES record last updated: December 18, 2012. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Othon Iliopoulos Md NPPES

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

DR. OTHON ILIOPOULOS MD (NPI 1447352448) is an individual medical oncology provider in Boston, Massachusetts, licensed in Massachusetts (76267) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Other (1985).

NPPES Registry Identity

NPI1447352448
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameDR. OTHON ILIOPOULOSCredential: MD
Location Address100 BLOSSOM STREET, YAW 7 MASSACHUSETTS GENERAL HOSPITALBoston, MA 02114-2617
Mailing AddressPo Box 9142, Mass General Physician OrganizationCharlestown, MA 02129-9142 · (617) 724-3404 · Fax (617) 726-8623
Phone(617) 724-3404
Fax(617) 726-8623
Sole ProprietorNo
Medical School CMSOtherGraduated 1985
Enumeration DateSeptember 1, 2006
Last NPPES UpdateDecember 18, 2012
✔ NPI 1447352448 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in MA · 76267
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
100 BLOSSOM STREET, Boston, MA 02114
Open in Google Maps ↗

Other Identifiers 5

OtherJ12656MA · Bcbs Ma
Other076267MA · Tufts Health Plan
Medicare UPINF30190
Medicaid0117749MA
Medicare ID-Type UnspecifiedA32105MA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Othon Iliopoulos 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 ID5890778369
PECOS Enrollment IDI20040608000437
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.

Areas of Expertise CMS Part B claims 2

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.

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.
39 services16 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.
39 services28 patients

Hospital Affiliations CMS Care Compare 2

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

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220071
Location55 Fruit StreetBoston, MA 02114 · Suffolk County
Emergency services Birthing friendly

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220110
Location75 Francis StreetBoston, MA 02115 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 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
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Parenteral nutrition solution, not otherwise specified, 10 grams lipids B4185
Other-Enteral and Parenteral · category OB005N
2 suppliers23 claims837 services$11.28 avg. paid by Medicare
Parenteral nutrition solution; compounded amino acid and carbohydrates with electrolytes, trace elements and vitamins, including preparation, any strength, 74 to 100 grams of protein - premix B4197
Other-Enteral and Parenteral · category OB005N
1 supplier15 claims103 services$280.26 avg. paid by Medicare
Parenteral nutrition supply kit; premix, per day B4220
Other-Enteral and Parenteral · category OB005N
2 suppliers23 claims158 services$8.04 avg. paid by Medicare
Parenteral nutrition administration kit, per day B4224
Other-Enteral and Parenteral · category OB005N
2 suppliers23 claims158 services$25.11 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 11

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

DR. THOMAS G ROBERTS JR. MD
Internal Medicine (Hematology & Oncology)
100 BLOSSOM STREET, COX 640 HEMATOLOGY ONCOLOGY ASSOCIATES
BOSTON, MA 02114
Suffolk County (617) 726-7423
MR. MARC GILBERT BOLDUC LICSW, CADC II, CGP
Social Worker (Clinical)
100 BLOSSOM STREET, COX BUILDING, FIRST FLOOR
BOSTON, MA 02114
Suffolk County (617) 726-6185
DR. JOANNA M STRECK PHD
Psychologist
100 BLOSSOM STREET, COX 110
BOSTON, MA 02114
Suffolk County (617) 643-9977
DR. ALEENA BANERJI MD
Allergy & Immunology
100 BLOSSOM STREET, COX 201
BOSTON, MA 02114
Suffolk County (617) 726-3850
DR. ROBERT SACKSTEIN MD PHD
Internal Medicine
100 BLOSSOM STREET, HEMATOLOGY ONCOLOGY ASSOCIATES COX6
BOSTON, MA 02114
Suffolk County (617) 724-1124
NANCY J SCHAEFFER NP
Nurse Practitioner
100 BLOSSOM STREET, COX 1 HEMATOLOGY ONCOLOGY ASSOCIATES
BOSTON, MA 02114
Suffolk County (617) 726-8698
DR. BRUCE ALLAN CHABNER MD
Internal Medicine
100 BLOSSOM STREET, COX 640 HEMATOLOGY ONCOLOGY ASSOCIATES
BOSTON, MA 02114
Suffolk County (617) 724-3200
SHANNON M MACDONALD MD
Radiology (Radiation Oncology)
100 BLOSSOM STREET, COX 3
BOSTON, MA 02114
Suffolk County (617) 724-8196

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 Othon Iliopoulos's NPI number?

The NPI number for Othon Iliopoulos is 1447352448. It was assigned to this individual provider in the NPPES registry on September 1, 2006.

Where is Othon Iliopoulos located?

Othon Iliopoulos practices at 100 Blossom Street Yaw 7 Massachusetts General Hospital, Boston, MA 02114. The listed phone number is (617) 724-3404.

What is Othon Iliopoulos's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Othon Iliopoulos enrolled in Medicare?

Yes. Othon Iliopoulos 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.

What insurance does Othon Iliopoulos accept?

Health plans from Anthem Blue Cross and Blue Shield list Othon Iliopoulos 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 Othon Iliopoulos affiliated with any hospitals?

According to CMS data, Othon Iliopoulos is affiliated with Massachusetts General Hospital and Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for Othon Iliopoulos was last updated on December 18, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.