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

Alexander Donald Pyden, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1548650971

Alexander Donald Pyden, MD is a Pathology in Burlington, Massachusetts. Graduated from Northwestern University Feinberg Medical School in 2016, 10 years ago. Practices with Lahey Clinic Inc, a 1,372-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
10
Trained at
Northwestern University Feinberg Medical School
Licensed in
MA
In the registry since
2015
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

41 Mall Road Lahey Hospital And Medical Ctr
Burlington, MA 01805-5400
Phone: (781) 744-8000
Show map & directions

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

Additional practice locations (1)

  • 330 Brookline Ave, Boston, MA 02215-5400 — (617) 667-7284

Specialties & licences

Anatomic Pathology & Clinical Pathology Physician (primary) Taxonomy 207ZP0102X · Licence 286257 (MA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1548650971
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 22, 2015
Last updated in NPPESJune 9, 2021
Certification dateJune 9, 2021

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 2016 (10 years in practice)
Group practice Lahey Clinic Inc — 1372 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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