Quick answers
- Does Brian R. Hirshman accept Medicare assignment?
- Yes. Medicare's clinician data says Brian R. Hirshman 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 Brian R. Hirshman see?
- In 2024, CMS data shows 47 Original Medicare patients and 101 services for Brian R. Hirshman. This counts Original Medicare only and measures volume, not quality.
- What is Brian R. Hirshman's NPI number?
- 1487107454. 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 Brian R. Hirshman, 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 | 47 |
|---|---|
| Services billed to Medicare | 101 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 82 |
Most frequent services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)18 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)18 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)18 services
- Critical care, first 30-74 minutes (99291)18 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 cholesterol75%
- Stroke or mini-stroke55%
- Arthritis49%
- Ischemic heart disease45%
- Heart failure45%
Hospitals where Brian R. Hirshman works
Medicare's Facility Affiliation Data lists Brian R. Hirshman 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 Health Downtown CampusEscondido, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050115
- Palomar Medical Center PowayPoway, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050636
- UC San Diego Health Hillcrest - Hillcrest Medical CenterSan Diego, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050025
Practice locations
Addresses where Brian R. Hirshman is enrolled with Medicare (CMS data updated October 2, 2026).
- 16950 Via TazonSan Diego, CA 92127 (800) 926‑8273
- 200 W Arbor DrSan Diego, CA 92103
- 9300 Campus Point DrLa Jolla, CA 92037 (800) 926‑8273
- 9350 Campus Point DrLa Jolla, CA 92037 (800) 926‑8273
Group practices
Medicare enrollment lists Brian R. Hirshman as a member of this group (CMS data updated October 2, 2026).
- Regents of the University of California2,089 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Other clinicians in Regents of the University of California
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Diego School Of Medicine |
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1487107454 |
| 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