Quick answers
- Does Karen J. Hanna accept Medicare assignment?
- Yes. Medicare's clinician data says Karen J. Hanna 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 Karen J. Hanna see?
- In 2024, CMS data shows 26 Original Medicare patients and 55 services for Karen J. Hanna. This counts Original Medicare only and measures volume, not quality.
- What is Karen J. Hanna's NPI number?
- 1184687337. 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 Karen J. Hanna, 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 | 26 |
|---|---|
| Services billed to Medicare | 55 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 59 |
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 pressure65%
- High cholesterol58%
- Diabetes42%
Hospitals where Karen J. Hanna works
Medicare's Facility Affiliation Data lists Karen J. Hanna 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.
- Palomar Medical Center PowayPoway, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050636
- Tri-City Medical CenterOceanside, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050128
Practice locations
Addresses where Karen J. Hanna is enrolled with Medicare (CMS data updated October 2, 2026).
- 2385 S Melrose DrVista, CA 92081 (760) 300‑3647
Group practices
Medicare enrollment lists Karen J. Hanna as a member of this group (CMS data updated October 2, 2026).
- Arch Health Partners Inc145 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Arch Health Partners Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184687337 |
| 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