Quick answers
- Does Randall W. Summerville accept Medicare assignment?
- Yes. Medicare's clinician data says Randall W. Summerville 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 Randall W. Summerville see?
- In 2024, CMS data shows 393 Original Medicare patients and 3,573 services for Randall W. Summerville. This counts Original Medicare only and measures volume, not quality.
- What is Randall W. Summerville's NPI number?
- 1821180803. 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 Randall W. Summerville, 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 | 393 |
|---|---|
| Services billed to Medicare | 3,573 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Administration of psychological or neuropsychological test by technician, each additional 30 minutes (96139)1,252 services
- Evaluation of neuropsychological test, each additional hour (96133)948 services
- Administration of psychological or neuropsychological test, each additional 30 minutes (96137)544 services
- Evaluation of neuropsychological test, first hour (96132)392 services
- Administration of psychological or neuropsychological test by technician, first 30 minutes (96138)240 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%
- Arthritis61%
- Alzheimer's disease or dementia61%
- Depression59%
- Anxiety59%
Hospitals where Randall W. Summerville works
Medicare's Facility Affiliation Data lists Randall W. Summerville 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.
- UChicago Medicine AdventHealth BolingbrookBolingbrook, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140304
- UChicago Medicine AdventHealth HinsdaleHinsdale, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140122
Practice locations
Addresses where Randall W. Summerville is enrolled with Medicare (CMS data updated October 2, 2026).
- 477 E Butterfield Rd, Suite 102Lombard, IL 60148 (630) 424‑8900
Group practices
Medicare enrollment lists Randall W. Summerville as a member of this group (CMS data updated October 2, 2026).
- Gregory Malo Psyd and Associates in Neuropsychology PC2 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Lombard
Clinicians with the same Medicare primary specialty in Lombard, IL — not a recommendation.
Other clinicians in Gregory Malo Psyd and Associates in Neuropsychology PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CP |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821180803 |
| 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