Mazen Mardini, MD
NPI 1518909126 · Gastroenterology Physician · Lodi, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mazen Mardini, MD is a Gastroenterology Physician provider in Lodi, CA (NPI 1518909126).
Provider details
- NPI number
- 1518909126
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A35332 (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
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
558 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 134 | $169 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 84 | $246 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 80 | $93 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 73 | $178 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378 | 52 | $179 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 308 | 298 |
| Omeprazole | 76 | 27 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 45 | 11 |
| Pantoprazole Sodium | 45 | 12 |
| Linaclotidebrand: Linzess | 27 | — |
| Famotidine | 26 | — |
| Diphenoxylate Hcl/Atropinebrand: Diphenoxylate-Atropine |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$86 across 4 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
- 2006-06-11
- Last updated
- 2010-03-03
Frequently asked questions
- What is Mazen Mardini's NPI number?
- Mazen Mardini's National Provider Identifier (NPI) is 1518909126, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mazen Mardini's specialty?
- Mazen Mardini is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mazen Mardini located?
- Mazen Mardini's practice location on file with NPPES is 999 S Fairmont Ave, Lodi, CA 95240.
- What is Mazen Mardini's phone number?
- The practice phone number listed in the NPPES registry for Mazen Mardini is (209) 334-6325.
- Does Mazen Mardini accept Medicare?
- Mazen Mardini is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mazen Mardini's NPI active?
- Yes — Mazen Mardini's NPI (1518909126) is active in the NPPES registry as of the last update on 2010-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.