Quick answers
- Does Mazen P. Kreidy accept Medicare assignment?
- Yes. Medicare's clinician data says Mazen P. Kreidy accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mazen P. Kreidy see?
- In 2024, CMS data shows 558 Original Medicare patients and 1,258 services for Mazen P. Kreidy. This counts Original Medicare only and measures volume, not quality.
- What is Mazen P. Kreidy's NPI number?
- 1972741635. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mazen P. Kreidy, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 558 |
|---|---|
| Services billed to Medicare | 1,258 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)153 services
- Test to examine how well the lungs exchange gases (94729)139 services
- Critical care, first 30-74 minutes (99291)128 services
- Test to measure expiratory airflow and volume changes before and after medication administration (94060)124 services
- Test to determine lung volumes using sensors (94726)122 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- COPD57%
- Arthritis55%
- Ischemic heart disease46%
- Diabetes41%
Hospitals where Mazen P. Kreidy works
Medicare's Facility Affiliation Data lists Mazen P. Kreidy at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520051
- Ascension SE Wisconsin HospitalMilwaukee, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520136
- Christiana HospitalNewark, DE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 080001
Practice locations
Addresses where Mazen P. Kreidy is enrolled with Medicare (CMS data updated October 2, 2026).
- 13111 N Port Washington RdMequon, WI 53097 (262) 243‑7300
- 2301 N Lake DrMilwaukee, WI 53211 (414) 585‑1000
- 4745 Ogletown Stanton RdNewark, DE 19713 (302) 623‑7600
Group practices
Medicare enrollment lists Mazen P. Kreidy as a member of these groups (CMS data updated October 2, 2026).
- Christiana Care Health Services Inc1,483 clinicians in the group
- Midwest Critical Care SC48 clinicians in the group
Specialties
Other pulmonologists in Mequon
Clinicians with the same Medicare primary specialty in Mequon, WI — not a recommendation.
Other clinicians in Christiana Care Health Services Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1972741635 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians