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

Jonathan Proulx, MD

Individual provider Hematology (Internal Medicine) Physician · NPI 1518320837

Jonathan Proulx, MD is a Hematology/Oncology in Dover, New Hampshire. Qualified in 2016, 10 years ago. Practices with Wentworth Douglass Physician Corporation, a 431-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Maine, New Hampshire and Washington.

Years since qualifying
10
Licensed in
ME, NH, WA
In the registry since
2016
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

789 Central Ave
Dover, NH 03820-2526
Phone: (603) 742-8787
Show map & directions

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

Additional practice locations (2)

  • 3301 Squalicum Pkwy, Bellingham, WA 98225-1919 — (360) 788-8222
  • 1117 Spring St, Friday Harbor, WA 98250-9782 — (360) 378-1738

Specialties & licences

Hematology (Internal Medicine) Physician (primary) Taxonomy 207RH0000X · Licence 22815 (NH)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence MD26071 (ME)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence MD61686505 (WA)
Medical Oncology Physician Taxonomy 207RX0202X · Licence 22815 (NH)

Record details

NPI number1518320837
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 4, 2016
Last updated in NPPESJanuary 9, 2026
Certification dateJanuary 9, 2026
Mailing address55 Fruit St, Boston, MA 02114-2621

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Wentworth Douglass Physician Corporation — 431 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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