Quick answers
- Does James J. Dalla Riva accept Medicare assignment?
- Yes. Medicare's clinician data says James J. Dalla Riva 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 James J. Dalla Riva see?
- In 2024, CMS data shows 98 Original Medicare patients and 384 services for James J. Dalla Riva. This counts Original Medicare only and measures volume, not quality.
- What is James J. Dalla Riva's NPI number?
- 1215040415. 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 James J. Dalla Riva, 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 | 98 |
|---|---|
| Services billed to Medicare | 384 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Urinalysis, manual test (81002)112 services
- Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory (Q0091)62 services
- Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous (G0328)59 services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)53 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)28 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 cholesterol69%
- High blood pressure65%
- Arthritis46%
- Anxiety29%
- Depression27%
- Diabetes15%
Hospitals where James J. Dalla Riva works
Medicare's Facility Affiliation Data lists James J. Dalla Riva 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.
- Anderson HospitalMaryville, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140289
- Community Hospital of StauntonStaunton, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141306
Practice locations
Addresses where James J. Dalla Riva is enrolled with Medicare (CMS data updated October 2, 2026).
- 6812 State Rt 162, Suite 301Maryville, IL 62062 (618) 288‑5699
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Maryville
Clinicians with the same Medicare primary specialty in Maryville, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Creighton University School Of Medicine |
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215040415 |
| 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