Janusz Madej, M.D.
NPI 1376616706 · Internal Medicine Physician · Los Altos, CA
Janusz Madej, M.D. is a Internal Medicine Physician provider in Los Altos, CA (NPI 1376616706).
Provider details
- NPI number
- 1376616706
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A69531 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 214 | 65 |
| Levothyroxine Sodium | 103 | 21 |
| Ezetimibe | 103 | 34 |
| Prednisone | 99 | 56 |
| Rosuvastatin Calcium | 95 | 27 |
| Pantoprazole Sodium | 80 | 25 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$29 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 3130 Alpine Rd.Ste 180Portola Valley, CA 94028Phone: (650) 529-1669Fax: (650) 529-1670
Registry dates
- Enumerated
- 2006-11-15
- Last updated
- 2024-03-30
- Certified
- 2024-03-30
Frequently asked questions
- What is Janusz Madej's NPI number?
- Janusz Madej's National Provider Identifier (NPI) is 1376616706, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janusz Madej's specialty?
- Janusz Madej is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Janusz Madej located?
- Janusz Madej's practice location on file with NPPES is 339 S San Antonio Rd Ste 1a, Los Altos, CA 94022-3699.
- What is Janusz Madej's phone number?
- The practice phone number listed in the NPPES registry for Janusz Madej is (650) 529-1669.
- Is Janusz Madej's NPI active?
- Yes — Janusz Madej's NPI (1376616706) is active in the NPPES registry as of the last update on 2024-03-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.