Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jonathan Proulx, MD

Hematology (Internal Medicine) Physician in Dover, NH · enumerated 2016.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1518320837

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Registry record

Entity type Individual (Type 1)

Name Jonathan Proulx

Credential MD

Sex Male

Practice address 789 Central Ave, Dover, NH, 03820

Phone (603) 742-8787

Enumeration date Apr 4, 2016

Last updated in NPPES Jan 9, 2026

Taxonomy & licenses

207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 22815 (NH) Primary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License MD26071 (ME) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License MD61686505 (WA) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 22815 (NH) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Jonathan Proulx practice?

The practice location on file with NPPES is in Dover, NH. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Jonathan Proulx?

The National Provider Identifier (NPI) for Jonathan Proulx is 1518320837, a Type 1 (individual) record in the CMS NPPES registry.

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David Coppola Surgery Physician · Dover, NH NPI 1770583452 Erwin Kurt Cullamar Hospitalist Physician · Dover, NH NPI 1982605200 Jonathan Harris Certified Registered Nurse Anesthetist · Dover, NH NPI 1821090754 Magdalena Scherer Hospitalist Physician · Dover, NH NPI 1063414894 Polius Raslavicius Anatomic Pathology & Clinical Pathology Physician · Dover, NH NPI 1619960333 Sarah Macduffie Hospice and Palliative Medicine (Family Medicine) Physician · Dover, NH NPI 1689668352 Cheryl Moore Anatomic Pathology & Clinical Pathology Physician · Dover, NH NPI 1356332670 Glenn Littell Anatomic Pathology & Clinical Pathology Physician · Dover, NH NPI 1457332512

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-09.