Madeleine Gysi, MD
Nephrology Physician · Mission Hills, CA
Madeleine Gysi, MD is a nephrology physician with a practice address in Mission Hills, California, and NPI 1679922892, issued on Jun 8, 2016. Check the license (California A161123, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Madeleine Gysi
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A161123 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11550 Indian Hills RD Ste 371, Mission Hills, CA 91345
- Phone
- (818) 365-1194
- Enumerated
- Jun 8, 2016
- Record last updated
- Oct 27, 2023
- Fax
- (818) 898-3835
- Medicare enrollment
- Enrolled (PECOS I20210630003649); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 11550 Indian Hills RD Ste 371
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ammar Alnaser, M.D.Nephrology Physician1073909370
- Cherreby Anderson, MSN, APRN, FNP-BCAdult Health Nurse Practitioner1578248571
- Mrinal Asopa, DOInternal Medicine Physician1184252009
- Elizabeth Cattell, R.N., ACNP-CNurse Practitioner1023144920
- Pascal Dabel, M.D.Nephrology Physician1033306592
- Kristian Caesar Fernandez, NPNurse Practitioner1972315588
Verify Madeleine Gysi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A161123Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average nephrology physician in 2024
1,207 Medicare Part D claims for 356 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium159 claims
- Amlodipine Besylate140 claims
- Furosemide111 claims
- Lisinopril102 claims
- Spironolactone90 claims
- Jardiance78 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.
Industry payments in 2024: $34.85
1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupWoodland Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Madeleine Gysi among 1,468 nephrology physician records in California
Madeleine Gysi, MD is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 89% of them.
- NPI issued2016 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2016 · median 2001 among the 1,128 with a school on file
- Record last updated2023 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 nephrology physician records list a practice address in Mission Hills
They are 11 of the 731 NPPES records with a practice address in Mission Hills, and 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Mission Hills → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Omaran Abdeen, M.D.Mission Hills, CA 913451700878410
- Ammar Alnaser, M.D.Mission Hills, CA 913451073909370
- Fung-Chuan Chou, MDMission Hills, CA 913451114945227
- Pascal Dabel, M.D.Mission Hills, CA 913451033306592
- Jehad Haggiagi, M.D.Mission Hills, CA 913451437420072
- Dominique Mall, MD.Mission Hills, CA 913451821043423
- Anthony Nicolaysen, MDMission Hills, CA 913451154869576
- Parag Shah, M.DMission Hills, CA 913451225020886
Common questions
What is Madeleine Gysi, MD's NPI number?
Madeleine Gysi, MD's National Provider Identifier (NPI) is 1679922892, issued on Jun 8, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Madeleine Gysi, MD located?
The NPPES record lists a practice address at 11550 Indian Hills RD Ste 371, Mission Hills, CA, 91345. Phone: (818) 365-1194. Providers update this record themselves, so call before visiting.
How can I verify Madeleine Gysi, MD's license?
NPPES lists California license number A161123, 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 Madeleine Gysi, MD prescribe under Medicare Part D?
In 2024, Madeleine Gysi, MD had 1,207 Medicare Part D claims for 356 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.