Is this your practice, John Cornelius Penner, MD? This profile is yours to edit: update your address, phone, photo and services.

Edit this profile

Organization Profile

John Cornelius Penner, MD

Is this you? Edit this profile

At a glance

About John Cornelius Penner, MD

John Cornelius Penner, MD is a healthcare organization in Los Gatos, CA, registered under internal medicine. This organization is also listed as specializing in public health & general preventive medicine. NPI 1003626458 identifies this record in the national registry.

Factual summary compiled by Guide.md from public records; not written by this provider.

Credentials & Licensing

NPINational Provider Identifier
1003626458Issued 2025

As reported to the NPI registry ↗

Common questions

What kind of practice is John Cornelius Penner, MD?

John Cornelius Penner, MD is an internist in Los Gatos, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.

NPI registry

What is John Cornelius Penner, MD's address?

John Cornelius Penner, MD is listed at 69 Hernandez Ave, Los Gatos, CA 95030. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How can I make an appointment with John Cornelius Penner, MD?

The number on file is (408) 204-6990. Contact the office directly to confirm availability and scheduling.

NPI registry

What is John Cornelius Penner, MD's NPI number?

John Cornelius Penner, MD's National Provider Identifier is 1003626458. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

Has John Cornelius Penner, MD confirmed this information?

Not yet. This profile is built from public federal data and has not been confirmed by John Cornelius Penner, MD. If this is you, claiming it is free.

Guide.md

Is this your practice?

Manage this listing? Log in or create an account, then click “This is my practice and I manage it” here. A verified physician whose registry address matches this location is approved instantly; everyone else is reviewed by a person.

Guide.md listings do not constitute medical advice or an endorsement.

A GigHz company · Founder: Pouyan Golshani, MD