Theodore Tzeremas, MD
NPI 1831252469ActiveIndividual· Internal Medicine, Nephrology· Tempe, AZ
Internal Medicine, Nephrology (MD) with Southwest Kidney Institute PLC, practicing in Tempe, Arizona. Their prescriptions cost Medicare Part D more than their services did: $787,716 for 3,431 claims, against $324,030 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 19 companies reporting payments in 2025, $1,363 in all, mostly food and beverage. Lists Banner Ocotillo Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1831252469 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 18, 2006 |
| Last updated in NPPES | Jun 19, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 42268 | AZ |
| Internal Medicine, Nephrology | 207RN0300X | 248701 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 797 |
|---|---|
| Services billed | 7,980 across 50 procedure codes |
| Paid by Medicare | $324,030 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,431 · 8,019 30-day fills |
|---|---|
| Patients | 598 |
| Total drug cost | $787,716 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Southwest Kidney Institute PLCMesa, AZ · 101 clinicians
Hospital affiliations
- Banner Ocotillo Medical CenterChandler, AZ
- Chandler Regional Medical CenterChandler, AZ
- Mercy Gilbert Medical CenterGilbert, AZ
Other facilities
- Davita Tempe Dialysis CenterDialysis facility · Tempe, AZ
- Dignity Health East Valley Rehabilitation HospitalInpatient rehabilitation facility · Chandler, AZ
- Dignity Health East Valley Rehabilitation HospitalInpatient rehabilitation facility · Gilbert, AZ
Industry payments (Open Payments)
- 2025$1,363 · 66 payments from 19 companies
- 2024$1,183 · 69 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $280.44 | 17 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $215.15 | 12 |
| Vantive US Healthcare LLC | $104.90 | 1 |
| Calliditas Therapeutics US Inc. | $94.07 | 4 |
| Akebia Therapeutics Inc | $90.89 | 4 |
What the 2025 payments were for
- Food and Beverage$1,307 · 63 payments
- Education$56.17 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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