Quick answers
- Does Lawrence J. Madewell accept Medicare assignment?
- Yes. Medicare's clinician data says Lawrence J. Madewell 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 Lawrence J. Madewell see?
- In 2024, CMS data shows 186 Original Medicare patients and 229 services for Lawrence J. Madewell. This counts Original Medicare only and measures volume, not quality.
- What is Lawrence J. Madewell's NPI number?
- 1548274715. 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 Lawrence J. Madewell, 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 | 186 |
|---|---|
| Services billed to Medicare | 229 |
| Different services or procedures | 24 |
| 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)116 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)40 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)19 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)16 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 cholesterol75%
- High blood pressure69%
- Arthritis47%
- Ischemic heart disease22%
- Diabetes21%
- Atrial fibrillation20%
Hospitals where Lawrence J. Madewell works
Medicare's Facility Affiliation Data lists Lawrence J. Madewell 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.
- Overlake Hospital Medical Center & ClinicsBellevue, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500051
- Valley Medical CenterRenton, WA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 500088
Practice locations
Addresses where Lawrence J. Madewell is enrolled with Medicare (CMS data updated October 2, 2026).
- 16850 SE 272nd StCovington, WA 98042
- 1750 112th Ave NE, Suite B102Bellevue, WA 98004 (425) 688‑5460
- 26458 Maple Valley Black Diamond RdMaple Valley, WA 98038 (425) 656‑5577
- 5708 E Lake Samm Pkwy SEIssaquah, WA 98029 (425) 688‑5488
Group practices
Medicare enrollment lists Lawrence J. Madewell as a member of these groups (CMS data updated October 2, 2026).
- Overlake Medical Clinics LLC425 clinicians in the group
- Valley Medical Group-Renton411 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Covington
Clinicians with the same Medicare primary specialty in Covington, WA — not a recommendation.
Other clinicians in Overlake Medical Clinics LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Cincinnati College Of Medicine |
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548274715 |
| 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