Quick answers
- Does Douglas R. Lake accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas R. Lake 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 Douglas R. Lake see?
- In 2024, CMS data shows 4,807 Original Medicare patients and 38,200 services for Douglas R. Lake. This counts Original Medicare only and measures volume, not quality.
- What is Douglas R. Lake's NPI number?
- 1194808394. 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 Douglas R. Lake, 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 | 4,807 |
|---|---|
| Services billed to Medicare | 38,200 |
| Different services or procedures | 216 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)18,118 services
- Injection, gadobutrol, 0.1 ml (A9585)11,792 services
- X-ray of chest, 2 views (71046)619 services
- Screening 3d breast mammography (77063)575 services
- Screening mammography (77067)575 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 pressure72%
- Arthritis45%
- Diabetes26%
- Chronic kidney disease24%
- Depression23%
Hospitals where Douglas R. Lake works
Medicare's Facility Affiliation Data lists Douglas R. Lake 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.
- Boone County HospitalBoone, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161372
- Broadlawns Medical CenterDes Moines, IA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 160101
- Mary Greeley Medical CenterAmes, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160030
- Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441
- Story County HospitalNevada, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161333
Practice locations
Addresses where Douglas R. Lake is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 15; the Medicare profile lists all.
- 1018 Duff AveAmes, IA 50010 (515) 663‑8621
- 1111 Duff AveAmes, IA 50010
- 1214 S Grant RdCarroll, IA 51401 (712) 792‑1500
- 1215 Duff AveAmes, IA 50010 (515) 239‑4400
- 1801 Hickman RdDes Moines, IA 50314 (515) 282‑2200
Group practices
Medicare enrollment lists Douglas R. Lake as a member of these groups (CMS data updated October 2, 2026).
- Stanford Health Care3,122 clinicians in the group
- McFarland Clinic PC363 clinicians in the group
- Broadlawns Medical Center306 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Ames
Clinicians with the same Medicare primary specialty in Ames, IA — not a recommendation.
Other clinicians in Stanford Health Care
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194808394 |
| 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