Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Wassim Assaf, MD

Individual provider Internal Medicine Physician · NPI 1548400278

Wassim Assaf, MD is an Internal Medicine in Auburn, Massachusetts. Qualified in 2004, 22 years ago. Practices with Assaf Inc, a 2-clinician group, works from 4 locations, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
22
Licensed in
MA
In the registry since
2009
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

48 Auburn St Ste 1
Auburn, MA 01501-2438
Phone: (774) 772-7058
Fax: (774) 772-7059
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 157 Union St, Marlborough, MA 01752-1228 — (508) 486-5678
  • 119 Belmont St, Worcester, MA 01605-2903 — (508) 334-8515
  • 55 Lake Ave N, Worcester, MA 01655-0002 — (508) 334-8515

Specialties & licences

Sleep Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0012X · Licence 265574 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 265574 (MA)

Record details

NPI number1548400278
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 20, 2009
Last updated in NPPESFebruary 3, 2021
Certification dateFebruary 3, 2021
Mailing addressPo Box 415348, Boston, MA 02241-5348

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesSLEEP MEDICINE
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Assaf Inc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Auburn