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

Alan W Tseng, MD, PHD

Individual provider Hematology (Internal Medicine) Physician · NPI 1518420520

Alan W Tseng, MD, PHD is a Hematology in Northampton, Massachusetts. Graduated from Louisiana State University School of Medicine in New Orleans in 2018, 8 years ago. Practices with Mass General Brigham Medical Group Western Massachusetts Inc, a 293-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
8
Trained at
Louisiana State University School of Medicine in New Orleans
Licensed in
MA
In the registry since
2019
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

30 Locust St
Northampton, MA 01060-2052
Phone: (413) 582-2900
Show map & directions

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

Specialties & licences

Hematology (Internal Medicine) Physician (primary) Taxonomy 207RH0000X · Licence 1024260 (MA)

Record details

NPI number1518420520
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedApril 8, 2019
Last updated in NPPESAugust 1, 2025
Certification dateAugust 1, 2025
Mailing address30 Locust St, Northampton, MA 01060-2052

Medicare enrollment

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

Medicare specialtyHEMATOLOGY
Medical schoolLOUISIANA STATE UNIVERSITY SCHOOL OF MEDICINE IN NEW ORLEANS
Graduated 2018 (8 years in practice)
Group practice Mass General Brigham Medical Group Western Massachusetts Inc — 293 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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