HUSSEIN ASSI M.D
NPI 1235544362
Internal Medicine - Medical Oncology in Boston, MA

Q: What is Hussein Assi's NPI number?

The NPI number for Hussein Assi is 1235544362. It was assigned to this individual provider in the NPPES registry on June 27, 2014.

Q: What is Hussein Assi's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Hussein Assi was last updated on May 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 June 27, 2014PECOS EnrolledAccepts Medicare Assignment

830 HARRISON AVENUE, 3RD FL, MOAKLEY BLDG, BOSTON, MA 02118(617) 638-6428(617) 638-5756 Get Directions Write a Review

NPPES record last updated: May 20, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 20, 2026, Jul 10, 2023, Feb 17, 2022 and 4 more (7 updates tracked since 2017).

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About Hussein Assi M.d NPPES

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

HUSSEIN ASSI M.D (NPI 1235544362) is an individual medical oncology provider in Boston, Massachusetts, licensed in Massachusetts (283659) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and is a graduate of Other (2011).

NPPES Registry Identity

NPI1235544362

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameHUSSEIN ASSICredential: M.D

Location Address830 HARRISON AVENUE, 3RD FL, MOAKLEY BLDGBoston, MA 02118-2905

Mailing Address960 Massachusetts Ave, Fl 2Boston, MA 02118-2690

Phone(617) 638-6428

Fax(617) 638-5756

Sole ProprietorNo

Medical School CMSOtherGraduated 2011

Enumeration DateJune 27, 2014

Last NPPES UpdateMay 20, 20267 updates tracked since enumeration

NPPES CertifiedMay 20, 2026

✔ NPI 1235544362 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in MA · 283659

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.

Also ListedInternal MedicineTaxonomy 207R00000X · License 283659 (MA)

Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License 283659 (MA)

830 HARRISON AVENUE, 3RD FL, Boston, MA 02118

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Other Identifiers 2

Medicaid3135284NH

Medicaid110162927AMA

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

Hussein Assi 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 ID5698192680

PECOS Enrollment IDI20200908000657

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 4

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 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.

40 services24 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.

38 services18 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

30 services30 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.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Boston Medical Center

Acute Care Hospitals · Boston, MA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220031

Location1 Boston Medical Center PlaceBoston, MA 02118 · Suffolk County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02118 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 2

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

Capecitabine, oral, 500 mg J8521

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier14 claims924 services$0.65 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511

Treatment-Chemotherapy · category RH012N

1 supplier12 claims12 services$17.41 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 20

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

DR. GEOFFREY R. OXNARD MD

Internal Medicine (Medical Oncology)