JOHN CORNELIUS PENNER, MD
JOHN CORNELIUS PENNER, MD is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003626458, based in Los Gatos, CA. The organization lists 2 taxonomy classifications, with Internal Medicine Physician recorded as primary.
Getting there
Here is what surrounds this office in Los Gatos, based on OpenStreetMap data collected Oct 11, 2026. Parking is available about 0.44 mi away. There is EV charging 0.46 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 0.46 mi away, served by North Santa Cruz Avenue & Nicholson Avenue. A pharmacy sits 0.48 mi from the entrance (Pharmaca Integrative Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.48 mi away.
Getting here and what is nearby
Parking 0.38 mi ~8 min
Parking 0.43 mi ~9 min
Hotel Los Gatos Village Inn 0.44 mi ~9 min
Parking 0.44 mi ~9 min
Convenience Valero of Los Gatos 0.45 mi ~10 min
Restaurant Palacio 0.45 mi ~10 min
115 North Santa Cruz Avenue
Transit North Santa Cruz Avenue & Nicholson Avenue 0.46 mi ~10 min
EV charging 0.46 mi ~10 min
Gas station Valero of Los Gatos 0.46 mi ~10 min
Gas station Valero 0.46 mi ~10 min
Restaurant NORTH - Seasonal Vietnamese Cuisine and Bar 0.46 mi ~10 min
133 North Santa Cruz Avenue
Tu-Fr 11:00-14:30,17:00-22:00; Sa 11:30-15:00,17:00-22:00; Su 11:30-15:00,17:00-21:00
Restaurant Kamakura 0.46 mi ~10 min
135 North Santa Cruz Avenue
Mo-Fr 11:00-14:30,17:00-22:00; Sa 12:00-22:00; Su 12:00-21:30
Coffee Fleur de Cocoa 0.47 mi ~10 min
39 North Santa Cruz Avenue
Coffee Dolce Spazio 0.47 mi ~10 min
Coffee Great Bear Coffee 0.48 mi ~10 min
North Santa Cruz Avenue
Pharmacy Pharmaca Integrative Pharmacy 0.48 mi ~10 min
54 North Santa Cruz Avenue, Los Gatos 95030
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Internal Medicine covers
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. NUCC Health Care Provider Taxonomy, code 207R00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | — | — | primary |
| 2083P0901X | Public Health & General Preventive Medicine Physician Public Health & General Preventive Medicine | — | — |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003626458 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jan 8, 2025 |
| Last updated | Jan 8, 2025 |
| Status | Active |
| Practice address |
69 HERNANDEZ AVE Los Gatos, CA 95030 (408) 204-6990 |
| Other names |
Kuros Medical, Inc Former Legal Name |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 6 | 2 | 6 | 4 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 2 | 3 | 4 | 1 |
Sum = 42 · next multiple of 10 = 50 · check digit = 8 · actual last digit = 8
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.