Michael Horowitz, M.D.
NPI 1518306851 · Diagnostic Radiology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Horowitz, M.D. is a Diagnostic Radiology Physician provider in San Diego, CA (NPI 1518306851).
Provider details
- NPI number
- 1518306851
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A135132 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,726 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 820 | $9 |
| Ct Scan of Chest With Contrast71260 | 517 | $54 |
| Ct Scan of Chest Without Contrast71250 | 376 | $52 |
| X-Ray of Chest, 2 Views71046 | 269 | $11 |
| X-Ray of Chest, 2 Views71046 | 269 | $37 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 245 | $86 |
| Ct Scan of Blood Vessels and Grafts of Heart With Contrast75574 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-20
- Last updated
- 2018-06-21
Frequently asked questions
- What is Michael Horowitz's NPI number?
- Michael Horowitz's National Provider Identifier (NPI) is 1518306851, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Horowitz's specialty?
- Michael Horowitz is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Horowitz located?
- Michael Horowitz's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103.
- What is Michael Horowitz's phone number?
- The practice phone number listed in the NPPES registry for Michael Horowitz is (619) 543-2218.
- Does Michael Horowitz accept Medicare?
- Michael Horowitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Horowitz's NPI active?
- Yes — Michael Horowitz's NPI (1518306851) is active in the NPPES registry as of the last update on 2018-06-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.