Ruben Krishnananthan, MD
NPI 1891807863ActiveIndividual· Nuclear Medicine· Lynnwood, WA
Nuclear Medicine (MD) with Swedish Health Services and 12 other groups, practicing in Lynnwood, Washington. Medicare paid $148,608 for services to 4,105 patients in 2024. Blue Earth Diagnostics reported $34.00 in payments in 2025, mostly food and beverage. Lists Providence Holy Cross Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1891807863 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 31, 2006 |
| Last updated in NPPES | Dec 30, 2025 |
| Certified by provider | Dec 30, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nuclear Medicine Primary | 207U00000X | MD00045187 | WA |
| Radiology, Diagnostic Radiology | 2085R0202X | MD00045187 | WA |
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 - Diagnostic Radiology (CA); Practitioner - Nuclear Medicine (ID); Practitioner - Diagnostic Radiology (MI); Practitioner - Diagnostic Radiology (NJ); Practitioner - Diagnostic Radiology (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 4,105 |
|---|---|
| Services billed | 5,280 across 149 procedure codes |
| Paid by Medicare | $148,608 |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | Diagnostic Radiology |
| Secondary specialties | Nuclear Medicine |
Medical groups
- Swedish Health ServicesSeattle, WA · 1,037 clinicians
- County of Santa ClaraSan Jose, CA · 1,022 clinicians
- Optum Care Washington PLLCEverett, WA · 683 clinicians
- Yakima Valley Memorial PhysiciansYakima, WA · 391 clinicians
- Swedish Health ServicesSeattle, WA · 385 clinicians
- Radia Inc P SSeattle, WA · 277 clinicians
- Swedish Health ServicesEverett, WA · 154 clinicians
- Radia California Radiology Medical Group IncMarietta, OH · 136 clinicians
- Evergreen Radia LLCMarietta, OH · 120 clinicians
- Swedish Radia Imaging Center at Edmonds LLCMarietta, OH · 112 clinicians
- Public Hospital District No 4 King County WashingtonSnoqualmie, WA · 92 clinicians
- South Sound Radiologists Inc P SPortland, OR · 78 clinicians
- Radia Imaging Center Holdings LLCSeattle, WA · 45 clinicians
Hospital affiliations
- Providence Holy Cross Medical CenterMission Hills, CA
- Providence Regional Medical Center EverettEverett, WA
- Providence Santa Rosa Memorial HospitalSanta Rosa, CA
- Swedish Medical CenterSeattle, WA
- Yakima Valley MemorialYakima, WA
Industry payments (Open Payments)
- 2025$34.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Blue Earth Diagnostics | $34.00 | 1 |
What the 2025 payments were for
- Food and Beverage$34.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records