Quick answers
- Does Chivonne L. Harrigal accept Medicare assignment?
- Yes. Medicare's clinician data says Chivonne L. Harrigal 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 Chivonne L. Harrigal see?
- In 2024, CMS data shows 829 Original Medicare patients and 2,740 services for Chivonne L. Harrigal. This counts Original Medicare only and measures volume, not quality.
- What is Chivonne L. Harrigal's NPI number?
- 1679741540. 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 Chivonne L. Harrigal, 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 | 829 |
|---|---|
| Services billed to Medicare | 2,740 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries (A9552)572 services
- Nuclear medicine study from skull base to mid-thigh with ct scan (78815)531 services
- Ct scan of chest with contrast (71260)501 services
- Ct scan of abdomen and pelvis with contrast (74177)409 services
- Piflufolastat f-18, diagnostic, 1 millicurie (A9595)315 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 cholesterol71%
- High blood pressure70%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)57%
- Arthritis41%
- Chronic kidney disease28%
- Ischemic heart disease27%
Practice locations
Addresses where Chivonne L. Harrigal is enrolled with Medicare (CMS data updated October 2, 2026).
- 5423 Reno Corporate DrReno, NV 89511 (775) 329‑0873
Group practices
Medicare enrollment lists Chivonne L. Harrigal as a member of this group (CMS data updated October 2, 2026).
- John a Shields MD and Steven a Schiff MD a Professional Corporation20 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Reno
Clinicians with the same Medicare primary specialty in Reno, NV — not a recommendation.
Other clinicians in John a Shields MD and Steven a Schiff MD a Professional Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Pittsburgh School Of Medicine |
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679741540 |
| 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
- 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