Quick answers
- Does Karina Roldan accept Medicare assignment?
- Yes. Medicare's clinician data says Karina Roldan 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 Karina Roldan see?
- In 2024, CMS data shows 92 Original Medicare patients and 154 services for Karina Roldan. This counts Original Medicare only and measures volume, not quality.
- What is Karina Roldan's NPI number?
- 1619222742. 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 Karina Roldan, 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 | 92 |
|---|---|
| Services billed to Medicare | 154 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)87 services
- Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg (J3420)23 services
- Injection of drug or substance under skin or into muscle (96372)20 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)12 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 cholesterol49%
- Diabetes38%
- Arthritis38%
- Ischemic heart disease16%
- Atrial fibrillation16%
Practice locations
Addresses where Karina Roldan is enrolled with Medicare (CMS data updated October 2, 2026).
- 5810 Jameson CtCarmichael, CA 95608
- 5810 Jameson Ct, Suite 1Carmichael, CA 95608 (916) 979‑0621
Group practices
Medicare enrollment lists Karina Roldan as a member of this group (CMS data updated October 2, 2026).
- Arnold Greenberg MD Inc6 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Carmichael
Clinicians with the same Medicare primary specialty in Carmichael, CA — not a recommendation.
Other clinicians in Arnold Greenberg MD Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619222742 |
| 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