Michael Gazzaniga, MD
NPI 1396858163 · Urology Physician · Fullerton, CA
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Gazzaniga, MD is a Urology Physician provider in Fullerton, CA (NPI 1396858163).
Provider details
- NPI number
- 1396858163
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A65760 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
2,312 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 557 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 305 | $99 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 238 | $17 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 127 | $179 |
| Ultrasound Measurement of Bladder Capacity After Voiding51798 | 112 | $13 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alfuzosin Hclbrand: Alfuzosin Hcl Er | 740 | 273 |
| Tamsulosin Hcl | 578 | 199 |
| Finasteride | 235 | 72 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 224 | 90 |
| Dutasteride | 224 | 88 |
| Mirabegronbrand: Myrbetriq | 134 | 45 |
| Desmopressin Acetate | 130 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$139 across 5 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
- 2006-08-16
- Last updated
- 2012-10-15
Frequently asked questions
- What is Michael Gazzaniga's NPI number?
- Michael Gazzaniga's National Provider Identifier (NPI) is 1396858163, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Gazzaniga's specialty?
- Michael Gazzaniga is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Gazzaniga located?
- Michael Gazzaniga's practice location on file with NPPES is 301 W Bastanchury Rd #180, Fullerton, CA 92835.
- What is Michael Gazzaniga's phone number?
- The practice phone number listed in the NPPES registry for Michael Gazzaniga is (714) 870-5970.
- Does Michael Gazzaniga accept Medicare?
- Michael Gazzaniga is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Gazzaniga's NPI active?
- Yes — Michael Gazzaniga's NPI (1396858163) is active in the NPPES registry as of the last update on 2012-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.