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AHMAD NADER KASSEM
NPI 1952805004
Internal Medicine - Medical Oncology in Methuen, MA

Active since March 22, 2018PECOS EnrolledAccepts Medicare Assignment
5 BRANCH ST STE 100, METHUEN, MA 01844(978) 620-2020 Get Directions Write a Review

NPPES record last updated: May 20, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 20, 2026, Jun 24, 2025, Jul 2, 2021 and 1 more (4 updates tracked since 2018).

About Ahmad Nader Kassem NPPES

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

AHMAD NADER KASSEM (NPI 1952805004) is an individual medical oncology provider in Methuen, Massachusetts, licensed in Massachusetts (1022062) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Lawrence General Hospital, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1952805004
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameAHMAD NADER KASSEM
Location Address5 BRANCH ST STE 100Methuen, MA 01844-1979
Mailing Address5 Branch St Ste 100Methuen, MA 01844-1979 · (978) 620-2020
Phone(978) 620-2020
Sole ProprietorYes
Medical School CMSOtherGraduated 2017
Enumeration DateMarch 22, 2018
Last NPPES UpdateMay 20, 20264 updates tracked since enumeration
NPPES CertifiedMay 20, 2026
✔ NPI 1952805004 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in MA · 1022062
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 Medicine · HematologyTaxonomy 207RH0000X · License 1022062 (MA)
5 BRANCH ST STE 100, Methuen, MA 01844
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, CareSource, Taro Health.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

Ahmad Nader Kassem 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 ID7517214794
PECOS Enrollment IDI20250805000107
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

2

Medicare enrollment records show Ahmad Kassem reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dana-Farber Cancer Institute, Inc.
26 mi
General Acute Care Hospital
450 BROOKLINE AVE
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • Also billed through NPI 1346433257 (Massachusetts)
  • 1,026 clinicians in this Medicare group
NPI 1851333686 (617) 632-3000
Emergency Medicine Associates P.A., P.C.
414 mi
Emergency Medicine
3300 GALLOWS RD
Falls Church, VA 22042
  • Reassigned Medicare billing, Virginia enrollment
  • 1,294 clinicians in this Medicare group
NPI 1134117393 (703) 776-4001

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 3

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
26 services19 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
25 services23 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.
15 services15 patients

Hospital Affiliations CMS Care Compare 3

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

Lawrence General Hospital

Acute Care Hospitals · Lawrence, MA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220010
LocationOne General StreetLawrence, MA 01842 · Essex County
Emergency services Birthing friendly

Holy Family Hospital

Acute Care Hospitals · Methuen, MA
2/5 CMS rating
OwnershipProprietary
CMS Certification Number220080
Location70 East StreetMethuen, MA 01844 · Essex 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 01844 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
$177.36 typical visit price
range $58.86 – $177.36
Typical copayment $44.34 (range $14.71 – $44.34)
Most-billed visit code 99205
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

Other Providers at the Same Location NPPES 5

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

ALLYSA EVELYN CHADDERDON PA
Physician Assistant
5 BRANCH ST STE 100
METHUEN, MA 01844
Essex County (978) 620-2020
TAYLOR M ORTIZ MD
Internal Medicine (Medical Oncology)
5 BRANCH ST STE 100
METHUEN, MA 01844
Essex County (978) 620-2020
DR. SAMANTHA CLAIRE HANLEY DNP
Nurse Practitioner (Family)
5 BRANCH ST STE 100
METHUEN, MA 01844
Essex County (978) 620-2020
CHRISTINE MARIE HART BROWN RN MSNED CEN FNP-BC
Nurse Practitioner (Family)
5 BRANCH ST STE 100
METHUEN, MA 01844
Essex County (978) 620-2020
ADAM AUDET RN
Registered Nurse (Oncology)
5 BRANCH ST STE 100
METHUEN, MA 01844
Essex County (425) 777-0270

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 Ahmad Kassem's NPI number?

The NPI number for Ahmad Kassem is 1952805004. It was assigned to this individual provider in the NPPES registry on March 22, 2018.

Where is Ahmad Kassem located?

Ahmad Kassem practices at 5 Branch St Ste 100, Methuen, MA 01844. The listed phone number is (978) 620-2020.

What is Ahmad Kassem's specialty?

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

Is Ahmad Kassem enrolled in Medicare?

Yes. Ahmad Kassem 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 Ahmad Kassem's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ahmad Kassem reassigns Medicare benefits to 2 organizations: Dana-Farber Cancer Institute, Inc. (Boston, MA) and Emergency Medicine Associates P.A., P.C. (Falls Church, VA). 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 Ahmad Kassem's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ahmad Kassem accept?

Health plans from Anthem Blue Cross and Blue Shield, CareSource and Taro Health list Ahmad Kassem 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 Ahmad Kassem affiliated with any hospitals?

According to CMS data, Ahmad Kassem is affiliated with Lawrence General Hospital, Holy Family Hospital and Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for Ahmad Kassem 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 5 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.