Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Carl Lopkin MD

Q: What type of organization is Carl Lopkin MD?

Carl Lopkin MD is registered in NPPES as a Gynecology Physician (its primary provider taxonomy).

Gynecology Physician in Brookline, MA · enumerated 2007 · authorized official Carl Lopkin, President.

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

National Provider Identifier

1902011232

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Registry record

Entity type Organization (Type 2)

Legal business name Carl Lopkin MD

Practice address 1101 Beacon St, Brookline, MA, 02446

Phone (617) 232-7980

Enumeration date May 11, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207VG0400X Gynecology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Carl Lopkin

Title President

Phone (617) 232-7980

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Carl Lopkin MD?

Carl Lopkin MD is registered in NPPES as a Gynecology Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.