Jessica Madej, MD
Internal Medicine Physician · Los Altos, CA
Jessica Madej, MD is an internal medicine physician with a practice address in Los Altos, California, and NPI 1417537218, issued on Apr 14, 2021. Check the license (California A192694, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jessica Madej
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A192694 CA
Self-reported in NPPES; status is on the state search - Practice location
- 339 S San Antonio RD Ste 1A, Los Altos, CA 94022
- Phone
- (650) 529-1669
- Enumerated
- Apr 14, 2021
- Record last updated
- Jun 14, 2024
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 339 S San Antonio RD Ste 1A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Janusz Madej, M.D.Internal Medicine Physician1376616706
Verify Jessica Madej in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A192694Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
85 Medicare Part D claims for 39 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Jessica Madej among 17,696 internal medicine physician records in California
Jessica Madej, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2024 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 internal medicine physician records list a practice address in Los Altos
They are 29 of the 718 NPPES records with a practice address in Los Altos, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Altos → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Bhanu-Rekha Bhaskar, MDLos Altos, CA 940221932273539
- Jacqueline Denkabe, MDLos Altos, CA 940221194883520
- Jessica Favreau, MDLos Altos, CA 940221841450731
- Julia Fong, MDLos Altos, CA 940221154409746
- Francis Lastufka, MDLos Altos, CA 940221144312141
- Janusz Madej, M.D.Los Altos, CA 940221376616706
- Carrie Mousseau, M.D.Los Altos, CA 940221447387451
- Amy Muzaffar, MDLos Altos, CA 940221124191481
Common questions
What is Jessica Madej, MD's NPI number?
Jessica Madej, MD's National Provider Identifier (NPI) is 1417537218, issued on Apr 14, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Jessica Madej, MD located?
The NPPES record lists a practice address at 339 S San Antonio RD Ste 1A, Los Altos, CA, 94022. Phone: (650) 529-1669. Providers update this record themselves, so call before visiting.
How can I verify Jessica Madej, MD's license?
NPPES lists California license number A192694, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jessica Madej, MD prescribe under Medicare Part D?
In 2024, Jessica Madej, MD had 85 Medicare Part D claims for 39 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.