Mazen Sires, MD
NPI 1154370765 · Hospitalist Physician · Provo, UT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mazen Sires, MD is a Hospitalist Physician provider in Provo, UT (NPI 1154370765).
Provider details
- NPI number
- 1154370765
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 60496111205 (UT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
661 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 415 | $75 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 172 | $108 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 59 | $46 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 15 | $124 |
Typical Medicare-allowed amounts for these services range $46–$124 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetron Hcl | 28 | 26 |
| Pantoprazole Sodium | 19 | 19 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 18 | 14 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 17 |
| Levofloxacin | 15 | 14 |
| Oxycodone Hcl | 14 | 14 |
| Ciprofloxacin Hcl | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-09
- Last updated
- 2023-04-19
- Certified
- 2023-04-19
Frequently asked questions
- What is Mazen Sires's NPI number?
- Mazen Sires's National Provider Identifier (NPI) is 1154370765, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mazen Sires's specialty?
- Mazen Sires is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Mazen Sires located?
- Mazen Sires's practice location on file with NPPES is 1034 N 500 W, Provo, UT 84604-3380.
- What is Mazen Sires's phone number?
- The practice phone number listed in the NPPES registry for Mazen Sires is (801) 357-8310.
- Does Mazen Sires accept Medicare?
- Mazen Sires is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mazen Sires's NPI active?
- Yes — Mazen Sires's NPI (1154370765) is active in the NPPES registry as of the last update on 2023-04-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.