Mallareddy Maddula, M.D.
NPI 1487762647ActiveIndividual· Internal Medicine, Nephrology· Stockton, CA
Internal Medicine, Nephrology (M.D.) with San Joaquin Kidney Clinic, Inc, practicing in Stockton, California. Their prescriptions cost Medicare Part D more than their services did: $786,873 for 4,046 claims, against $406,696 paid for services in 2024. Fresenius USA Marketing, Inc. was the largest of 11 companies reporting payments in 2025, $736.20 in all, mostly food and beverage. Lists Adventist Health Lodi Memorial and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1487762647 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 28, 2006 |
| Last updated in NPPES | Feb 28, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A108120 | CA |
| Internal Medicine, Nephrology | 207RN0300X | ME96158 | FL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 916 |
|---|---|
| Services billed | 3,546 across 18 procedure codes |
| Paid by Medicare | $406,696 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,046 · 8,369 30-day fills |
|---|---|
| Patients | 539 |
| Total drug cost | $786,873 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- San Joaquin Kidney Clinic, IncStockton, CA · 8 clinicians
Hospital affiliations
- Adventist Health Lodi MemorialLodi, CA
- Dameron HospitalStockton, CA
- Memorial Medical CenterModesto, CA
- St Joseph's Medical Center of StocktonStockton, CA
- Sutter Amador HospitalJackson, CA
Other facilities
- Davita Lodi Dialysis CenterDialysis facility · Lodi, CA
- Davita Port City DialysisDialysis facility · Stockton, CA
- Davita Tokay Dialysis CenterDialysis facility · Lodi, CA
- Davita Tokay Home Dialysis Center PdDialysis facility · Lodi, CA
- Rai - West March - StocktonDialysis facility · Stockton, CA
Industry payments (Open Payments)
- 2025$736.20 · 29 payments from 11 companies
- 2024$834.11 · 39 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Fresenius USA Marketing, Inc. | $245.87 | 10 |
| Nxstage Medical, Inc. | $99.73 | 1 |
| Ardelyx, Inc. | $92.18 | 4 |
| Otsuka America Pharmaceutical, Inc. | $80.82 | 3 |
| Glaxosmithkline, LLC. | $58.05 | 3 |
What the 2025 payments were for
- Food and Beverage$714.34 · 28 payments
- Education$21.86 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Nephrology providers in Stockton
- 1417713264
- 1164544508
- 1518040799
- 1497289789
- 1841314853
- 1972819803
- 1790110880
- 1083611594
- 1144217654
- 1053756924
- 1659307387
- 1639317837