Quick answers
- Does Ariana Hartoonian accept Medicare assignment?
- Yes. Medicare's clinician data says Ariana Hartoonian 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 Ariana Hartoonian see?
- In 2024, CMS data shows 224 Original Medicare patients and 291 services for Ariana Hartoonian. This counts Original Medicare only and measures volume, not quality.
- What is Ariana Hartoonian's NPI number?
- 1447913942. 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 Ariana Hartoonian, 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 | 224 |
|---|---|
| Services billed to Medicare | 291 |
| Different services or procedures | 46 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Partial removal of breast (19301)50 services
- Repair of groin hernia using an endoscope (49650)35 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)33 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)23 services
- Repair of wound by transferring skin, 30.1-60.0 sq cm (14301)20 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 cholesterol73%
- High blood pressure60%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)47%
- Arthritis39%
- Ischemic heart disease21%
- Osteoporosis20%
Hospitals where Ariana Hartoonian works
Medicare's Facility Affiliation Data lists Ariana Hartoonian 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.
- Scripps Green HospitalLa Jolla, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 050424
- Scripps Mercy HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050077
Practice locations
Addresses where Ariana Hartoonian is enrolled with Medicare (CMS data updated October 2, 2026).
- 10666 N Torrey Pines RdLa Jolla, CA 92037 (858) 554‑9100
- 10666 N Torrey Pines Rd, 2nd Floor SW209La Jolla, CA 92037 (858) 554‑8122
- 9888 Genesee AveLa Jolla, CA 92037 (858) 626‑4123
- 9896 Genesee AveLa Jolla, CA 92037 (858) 626‑4123
- 9898 Genesee AveLa Jolla, CA 92037 (858) 455‑9100
Group practices
Medicare enrollment lists Ariana Hartoonian as a member of this group (CMS data updated October 2, 2026).
- Scripps Health1,433 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in La Jolla
Clinicians with the same Medicare primary specialty in La Jolla, CA — not a recommendation.
Other clinicians in Scripps Health
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| School | Yale University School Of Medicine |
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1447913942 |
| 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