Quick answers
- Does Karthik P. Mahadevan accept Medicare assignment?
- Yes. Medicare's clinician data says Karthik P. Mahadevan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Karthik P. Mahadevan see?
- In 2024, CMS data shows 414 Original Medicare patients and 1,416 services for Karthik P. Mahadevan. This counts Original Medicare only and measures volume, not quality.
- What is Karthik P. Mahadevan's NPI number?
- 1144285263. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Karthik P. Mahadevan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 414 |
|---|---|
| Services billed to Medicare | 1,416 |
| Different services or procedures | 55 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)276 services
- Test to measure rate of airflow (94375)128 services
- Test to determine lung volumes using sensors (94726)96 services
- Test to examine how well the lungs exchange gases (94729)96 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)71 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol71%
- COPD53%
- Arthritis49%
- Heart failure33%
- Diabetes31%
Hospitals where Karthik P. Mahadevan works
Medicare's Facility Affiliation Data lists Karthik P. Mahadevan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Bay Area HospitalCoos Bay, OR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 380090
- Mercy Medical CenterRoseburg, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380027
- Peace Harbor Medical CenterFlorence, OR · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 381316
- PeaceHealth Cottage Grove Community Medical CenterCottage Grove, OR · Critical Access Hospital · Emergency services: listed by Medicare · CCN 381301
- Sacred Heart Medical Center - RiverbendSpringfield, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380102
Practice locations
Addresses where Karthik P. Mahadevan is enrolled with Medicare (CMS data updated October 2, 2026).
- 3125 Chad Dr, Suite 100Eugene, OR 97408 (541) 687‑1712
Group practices
Medicare enrollment lists Karthik P. Mahadevan as a member of this group (CMS data updated October 2, 2026).
- PeaceHealth Medical Group255 clinicians in the group
Specialties
Other pulmonologists in Eugene
Clinicians with the same Medicare primary specialty in Eugene, OR — not a recommendation.
Other clinicians in PeaceHealth Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1144285263 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians