Johan Winoto, M.D.
Nephrology Physician · Elk Grove, CA
Johan Winoto, M.D. is a nephrology physician with a practice address in Elk Grove, California, and NPI 1780635920, issued on May 12, 2006. Check the license (California A116149, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Johan Winoto
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- A116149 CA
35090745 OH
Self-reported in NPPES; status is on the state search - Practice location
- 2218 Kausen Dr Ste 103, Elk Grove, CA 95758
- Phone
- (916) 683-8774
- Enumerated
- May 12, 2006
- Record last updated
- Jun 13, 2025
- Fax
- (916) 683-8777
- Medicaid ID
- GR0015060 CA
- Medicare enrollment
- Enrolled (PECOS I20110726000600); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2010
- 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 2218 Kausen Dr Ste 103
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Howard, M.D.Nephrology Physician1811377062
Verify Johan Winoto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A116149Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% fewer Medicare Part D claims than the average nephrology physician in 2024
1,241 Medicare Part D claims for 205 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Calcium Acetate139 claims
- Nifedipine Er137 claims
- Sevelamer Carbonate132 claims
- Amlodipine Besylate119 claims
- Losartan Potassium102 claims
- Hydralazine Hcl78 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: $13.85
1 payment: food and beverage; the largest payer was Ardelyx, Inc. 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
- Capital Nephrology Medical GroupSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johan Winoto among 1,468 nephrology physician records in California
Johan Winoto, M.D. 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 48% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2010 · median 2001 among the 1,128 with a school on file
- Record last updated2025 · 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).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Elk Grove → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- John Howard, M.D.Elk Grove, CA 957581811377062
- Inderpreet Sekhon, MDGranite Bay, CA 957461720012883
- Harry Ward, M.D.Sacramento, CA 958111992815336
- Naveen Atray, M.D.Sacramento, CA 958151780608901
- Rohit Kashyap, MDSacramento, CA 958151902845209
- Maryam Afkarian, M.D., PH.D.Sacramento, CA 958171255387338
- Andrew Chin, MDSacramento, CA 958171649251133
- Thomas Depner, M.D.Sacramento, CA 958171962487561
Common questions
What is Johan Winoto, M.D.'s NPI number?
Johan Winoto, M.D.'s National Provider Identifier (NPI) is 1780635920, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Johan Winoto, M.D. located?
The NPPES record lists a practice address at 2218 Kausen Dr Ste 103, Elk Grove, CA, 95758. Phone: (916) 683-8774. Providers update this record themselves, so call before visiting.
How can I verify Johan Winoto, M.D.'s license?
NPPES lists California license number A116149, 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 Johan Winoto, M.D. prescribe under Medicare Part D?
In 2024, Johan Winoto, M.D. had 1,241 Medicare Part D claims for 205 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.