Ruth Merry Indahyung, MD
NPI 1649452772ActiveIndividual· Internal Medicine, Nephrology· South Salt Lake, UT
Internal Medicine, Nephrology (MD) with Nephrology Associates of Utah LLC, practicing in South Salt Lake, Utah. Their prescriptions cost Medicare Part D more than their services did: $198,531 for 1,429 claims, against $90,086 paid for services in 2024. Amgen Inc. was the largest of 13 companies reporting payments in 2025, $605.71 in all, mostly food and beverage. Lists Holy Cross Hospital-Jordan Valley and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1649452772 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 30, 2007 |
| Last updated in NPPES | Sep 29, 2026 |
| Certified by provider | May 2, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 7529796-1205 | UT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (UT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 251 |
|---|---|
| Services billed | 841 across 16 procedure codes |
| Paid by Medicare | $90,086 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,429 · 3,531 30-day fills |
|---|---|
| Patients | 269 |
| Total drug cost | $198,531 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Nephrology Associates of Utah LLCS Salt Lake, UT · 31 clinicians
Hospital affiliations
- Holy Cross Hospital-Jordan ValleyWest Jordan, UT
- Intermountain Health Riverton HospitalRiverton, UT
- Intermountain Medical CenterMurray, UT
- Lds HospitalSalt Lake City, UT
- St Mark's HospitalSalt Lake City, UT
Other facilities
- 462532 South Mountain DialysisDialysis facility · South Jordan, UT
- 463502 Utah Dialysis LabDialysis facility · Salt Lake City, UT
Industry payments (Open Payments)
- 2025$605.71 · 27 payments from 13 companies
- 2024$427.00 · 23 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $124.40 | 7 |
| Travere Therapeutics, Inc. | $88.17 | 3 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | $71.45 | 2 |
| Otsuka America Pharmaceutical, Inc. | $60.44 | 3 |
| Glaxosmithkline, LLC. | $45.84 | 2 |
What the 2025 payments were for
- Food and Beverage$553.93 · 26 payments
- Education$51.78 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Nephrology providers in South Salt Lake
- 1992991921
- 1538166640
- 1912168345
- 1811902505
- 1013908995
- 1801824438
- 1922025378
- 1306806963
- 1174930051
- 1457564601
- 1053319657
- 1629501051