Johan Winoto, M.D.
NPI 1780635920 · Nephrology Physician · Elk Grove, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Johan Winoto, M.D. is a Nephrology Physician provider in Elk Grove, CA (NPI 1780635920).
Provider details
- NPI number
- 1780635920
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A116149 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,057 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older)90961 | 352 | $297 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 242 | $111 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 177 | $80 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 118 | $102 |
| Dialysis Services, 1 Physician Visit Per Month (20 Years Or Older)90962 | 95 | $209 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcium Acetate | 139 | 31 |
| Nifedipinebrand: Nifedipine Er | 137 | 39 |
| Sevelamer Carbonate | 132 | 40 |
| Amlodipine Besylate | 119 | 33 |
| Losartan Potassium | 102 | 29 |
| Hydralazine Hcl | 78 | 21 |
| Furosemide | 77 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 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
Registry dates
- Enumerated
- 2006-05-12
- Last updated
- 2025-06-13
- Certified
- 2025-06-13
Frequently asked questions
- What is Johan Winoto's NPI number?
- Johan Winoto's National Provider Identifier (NPI) is 1780635920, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Johan Winoto's specialty?
- Johan Winoto is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Johan Winoto located?
- Johan Winoto's practice location on file with NPPES is 2218 Kausen Dr Ste 103, Elk Grove, CA 95758-7178.
- What is Johan Winoto's phone number?
- The practice phone number listed in the NPPES registry for Johan Winoto is (916) 683-8774.
- Does Johan Winoto accept Medicare?
- Johan Winoto is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Johan Winoto's NPI active?
- Yes — Johan Winoto's NPI (1780635920) is active in the NPPES registry as of the last update on 2025-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.