
NPIID
Karim Etienne Abou Nassar, MD
Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
NPIID
Availability on request
100 providers found
Finding the right hematologist in Boston means weighing insurance coverage, distance, and bedside manner. The metro has a growing bench of hematologists — 100+ verified hematologists are listed below.

Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA1153 Centre St, Boston, MA, 02130
Availability on request

Hematology & Oncology Physician
Boston, MA75 Francis St, Boston, MA, 02115
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA300 Longwood Ave, Boston, MA, 02115
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA133 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Hematology & Oncology Physician
Boston, MA75 Francis St, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MA330 Brookline Ave, Boston, MA, 02215
Availability on request

Availability on request

Availability on request

Hematology (Internal Medicine) Physician
Boston, MA330 Brookline Ave, Boston, MA, 02215
Availability on request

Availability on request

Hematology & Oncology Physician
Boston, MA330 Brookline Ave, Boston, MA, 02215
Availability on request

Availability on request

Hematology & Oncology Physician
Boston, MA450 Brookline Ave # 2-058, Boston, MA, 02215
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA330 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology (Pathology) Physician
Boston, MA330 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology (Pathology) Physician
Boston, MA750 Washington St, Boston, MA, 02111
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Availability on request

Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA300 Longwood Ave, Boston, MA, 02115
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Hematology & Oncology Physician
Boston, MA150 S Huntington Ave, Boston, MA, 02130
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology (Pathology) Physician
Boston, MA75 Francis St, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MABeth Israel Deaconess Medical Center, Boston, MA, 02215
Availability on request

Availability on request

Hematology (Internal Medicine) Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MAMassachusetts General Hospital, Boston, MA, 02114
Availability on request

Availability on request

Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MA44 Binney Street, Boston, MA, 02115
Availability on request

Availability on request

Availability on request

Hematology & Oncology Physician
Boston, MA800 Washington St, Boston, MA, 02111
Availability on request

Hematology & Oncology Physician
Boston, MA330 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MA250 Longwood Ave Rm 304C, Boston, MA, 02115
Availability on request

Hematology (Internal Medicine) Physician
Boston, MAMassachusetts General Hospital, Boston, MA, 02114
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA150 S Huntington Ave, Boston, MA, 02130
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA300 Longwood Ave, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA300 Longwood Ave, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Availability on request

Hematology (Internal Medicine) Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Availability on request

Availability on request

Hematology & Oncology Physician
Boston, MABeth Israel Medical Center, Boston, MA, 02215
Availability on request

Hematology (Pathology) Physician
Boston, MA330 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Availability on request

Hematology & Oncology Physician
Boston, MA330 Brookline Ave, Boston, MA, 02215
Availability on request

Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Avenue, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA75 Francis St, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MA750 Washington St, Boston, MA, 02111
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA300 Longwood Ave, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Avenue, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA330 Brookline Ave # 430, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA44 Binney St, Boston, MA, 02115
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA300 Longwood Ave, Boston, MA, 02115
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Hematology & Oncology Physician
Boston, MA330 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA860 Washington St, Boston, MA, 02111
Availability on request

Hematology & Oncology Physician
Boston, MA330 Brookline Ave # Ks133, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA800 Washington St, Boston, MA, 02111
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA75 Francis St, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Hematology & Oncology Physician
Boston, MA330 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA44 Binney Street, Boston, MA, 02115
Availability on request

Hematology & Oncology Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Hematology & Oncology Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Pediatric Hematology & Oncology Physician
Boston, MA450 Brookline Ave # Dana3154, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA450 Brookline Ave, Boston, MA, 02215
Availability on request

Hematology & Oncology Physician
Boston, MA55 Fruit St, Boston, MA, 02114
Availability on request

Hematology (Internal Medicine) Physician
Boston, MA75 Francis Street, Boston, MA, 02115
Availability on request
These providers list this insurance as accepted, but coverage should be confirmed directly with the provider before booking.
Same specialty in cities near Boston — useful if your insurance network extends across the metro.
Boston has hematologists practicing across hospital systems, group practices, and independent clinics. When choosing a hematologist in Boston, the three factors most patients care about are: insurance acceptance, distance from home or work, and patient reviews. Heallexa shows all three on every listing so you can compare without clicking back and forth.
Many Boston hematologists list major insurance plans including Blue Cross Blue Shield, Aetna, UnitedHealthcare, Cigna, Humana, and Medicare. Listings reflect what providers have indicated they accept — always confirm in-network status directly with the office before booking. Out-of-network visits can cost 3–5× more than in-network ones.
Sort the list above by rating. Heallexa surfaces verified patient reviews alongside credentials so you can see whether a provider's strengths match what you actually need.
Try the surrounding metro — insurance networks often extend across multiple cities. The nearby-cities links below open the same specialty in adjacent markets. Always confirm coverage directly with the provider.
Walk-ins are uncommon for most hematologists. The "available today" filter shows providers with open same-day slots.
Heallexa refreshes provider data from public NPI records and license databases on a rolling basis. Listings that fall out of the active registry are removed automatically.