Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aaron Benjamin Nelson, M.D.

Q: What is the NPI number for Aaron Nelson?

The National Provider Identifier (NPI) for Aaron Nelson is 1750649570, a Type 1 (individual) record in the CMS NPPES registry.

Endocrinology, Diabetes & Metabolism Physician in Boston, MA · enumerated 2012.

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

National Provider Identifier

1750649570

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Registry record

Entity type Individual (Type 1)

Name Aaron Benjamin Nelson

Credential M.D.

Sex Male

Practice address 75 Francis St, Boston, MA, 02115

Phone (617) 732-5500

Enumeration date Apr 30, 2012

Last updated in NPPES Oct 12, 2023

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 0101262442 (VA) Secondary

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 1016984 (MA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
1750649570	Medicaid	VA	-

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

What is the NPI number for Aaron Nelson?

The National Provider Identifier (NPI) for Aaron Nelson is 1750649570, a Type 1 (individual) record in the CMS NPPES registry.

Where does Aaron Nelson practice?

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

Other providers at this practice address

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Po-Shun Lee Pulmonary Disease Physician · Boston, MA NPI 1740284702 Cornelius Sullivan Anesthesiology Physician · Boston, MA NPI 1629074760 John Cadigan Cardiovascular Disease Physician · Boston, MA NPI 1497752620 Christie Lucente Physician Assistant · Boston, MA NPI 1164429056 Maria Perez Physician Assistant · Boston, MA NPI 1992705834 Todd Ellerin Infectious Disease Physician · Boston, MA NPI 1205837176 Jacqueline Tan Radiation Oncology Physician · Boston, MA NPI 1598766214 Vera Franklin Diagnostic Radiology Physician · Boston, MA NPI 1316939028

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-12.