Gregg Alzate, MD
NPI 1932173085 · Diagnostic Radiology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregg Alzate, MD is a Diagnostic Radiology Physician provider in San Diego, CA (NPI 1932173085).
Provider details
- NPI number
- 1932173085
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G42015 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
- Nuclear Radiology Physician2085N0904X
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,666 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 391 | $9 |
| Ct Scan Head Or Brain Without Contrast70450 | 277 | $40 |
| X-Ray of Chest, 2 Views71046 | 83 | $38 |
| Aspiration of Fluid From Chest Cavity Using Imaging Guidance32555 | 81 | $100 |
| Fluoroscopic Guidance for Insertion Or Removal of Central Vein Access Device77001 | 68 | $18 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 62 | $86 |
| X-Ray of Chest, 2 Views71046 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$33,048 across 43 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-15
- Last updated
- 2007-10-09
Frequently asked questions
- What is Gregg Alzate's NPI number?
- Gregg Alzate's National Provider Identifier (NPI) is 1932173085, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregg Alzate's specialty?
- Gregg Alzate is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregg Alzate located?
- Gregg Alzate's practice location on file with NPPES is 8745 Aero Drive, San Diego, CA 92123-1774.
- What is Gregg Alzate's phone number?
- The practice phone number listed in the NPPES registry for Gregg Alzate is (858) 565-0950.
- Does Gregg Alzate accept Medicare?
- Gregg Alzate is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregg Alzate's NPI active?
- Yes — Gregg Alzate's NPI (1932173085) is active in the NPPES registry as of the last update on 2007-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.