Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Karl F Gumpper, RPH

Q: What is the NPI number for Karl Gumpper?

The National Provider Identifier (NPI) for Karl Gumpper is 1942277801, a Type 1 (individual) record in the CMS NPPES registry.

Pharmacist in Boston, MA · enumerated 2006.

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

National Provider Identifier

1942277801

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Registry record

Entity type Individual (Type 1)

Name Mr. Karl F Gumpper

Credential RPH

Sex Male

Practice address 300 Longwood Ave, Boston, MA, 02115

Phone (857) 218-3768

Enumeration date Feb 28, 2006

Last updated in NPPES Oct 29, 2021

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License PH235132 (MA) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Karl Gumpper practice?

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

What is the NPI number for Karl Gumpper?

The National Provider Identifier (NPI) for Karl Gumpper is 1942277801, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-29.