Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joseph Avruch, MD

Endocrinology, Diabetes & Metabolism Physician in Boston, MA · enumerated 2005 · practices at Mgh Outpatient Pharmacy.

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

National Provider Identifier

1851381941

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Registry record

Entity type Individual (Type 1)

Name Dr. Joseph Avruch

Credential MD

Sex Male

Practice address 55 Fruit Street, Wel 8, Boston, MA, 02114

Phone (617) 726-6909

Fax (617) 726-5649

Enumeration date Oct 28, 2005

Last updated in NPPES Dec 6, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 34547 (MA) Secondary

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 34547 (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
2008513	Medicaid	MA	-
724170	Other	MA	TUFTS HEALTH PLAN
M08304	Other	MA	BCBS MA

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Joseph Avruch?

Joseph Avruch is registered in NPPES with the primary taxonomy of Endocrinology, Diabetes & Metabolism Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-06.