Mark Zaetta, MD
NPI 1114901394 · Internal Medicine Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Zaetta, MD is a Internal Medicine Physician provider in Tucson, AZ (NPI 1114901394).
Provider details
- NPI number
- 1114901394
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25691 (AZ)
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
877 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) |
|---|---|---|
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 327 | $125 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 286 | $123 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 137 | $88 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 41 | $22 |
| Administration of Influenza Virus VaccineG0008 | 28 | $31 |
| Psychiatric Collaborative Care Management Per Calendar Month, Each Additional 30 Minutes99494 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 144 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 897 | 257 |
| Levothyroxine Sodium | 894 | 251 |
| Lisinopril | 450 | 138 |
| Losartan Potassium | 407 | 127 |
| Amlodipine Besylate | 373 | 109 |
| Atorvastatin Calcium | 285 | 92 |
| Simvastatin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$285 across 3 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
- 2005-12-01
- Last updated
- 2022-09-16
- Certified
- 2022-09-16
Frequently asked questions
- What is Mark Zaetta's NPI number?
- Mark Zaetta's National Provider Identifier (NPI) is 1114901394, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Zaetta's specialty?
- Mark Zaetta is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Zaetta located?
- Mark Zaetta's practice location on file with NPPES is 4730 E Grant Rd, Tucson, AZ 85712-2703.
- What is Mark Zaetta's phone number?
- The practice phone number listed in the NPPES registry for Mark Zaetta is (520) 290-0300.
- Does Mark Zaetta accept Medicare?
- Mark Zaetta is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Zaetta's NPI active?
- Yes — Mark Zaetta's NPI (1114901394) is active in the NPPES registry as of the last update on 2022-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.