Quick answers
- Does Ronald S. Lotoc accept Medicare assignment?
- Yes. Medicare's clinician data says Ronald S. Lotoc 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 Ronald S. Lotoc see?
- In 2024, CMS data shows 398 Original Medicare patients and 1,543 services for Ronald S. Lotoc. This counts Original Medicare only and measures volume, not quality.
- What is Ronald S. Lotoc's NPI number?
- 1275078354. 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 Ronald S. Lotoc, 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 | 398 |
|---|---|
| Services billed to Medicare | 1,543 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)495 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)371 services
- Hospital discharge day management, more than 30 minutes (99239)264 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)122 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)116 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 cholesterol75%
- Heart failure66%
- Ischemic heart disease59%
- Chronic kidney disease59%
- Arthritis58%
Hospitals where Ronald S. Lotoc works
Medicare's Facility Affiliation Data lists Ronald S. Lotoc 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.
- Kaiser Sunnyside Medical CenterClackamas, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380091
- Memorial HealthLawton, OK · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 370056
Practice locations
Addresses where Ronald S. Lotoc is enrolled with Medicare (CMS data updated October 2, 2026).
- 14406 NE 20th AveVancouver, WA 98686 (800) 813‑2000
- 3401 W Gore BlvdLawton, OK 73505 (580) 510‑7037
- 890 Oak St SESalem, OR 97301 (800) 813‑2000
Group practices
Medicare enrollment lists Ronald S. Lotoc as a member of these groups (CMS data updated October 2, 2026).
- Kaiser Foundation Health Plan of the Northwest1,807 clinicians in the group
- Comanche County Healthcare Corporation130 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Vancouver
Clinicians with the same Medicare primary specialty in Vancouver, WA — not a recommendation.
Other clinicians in Kaiser Foundation Health Plan of the Northwest
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 (22 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275078354 |
| 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