Mazen Alkhalisy, MD
NPI 1417931106 · Internal Medicine Physician · Green Bay, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mazen Alkhalisy, MD is a Internal Medicine Physician provider in Green Bay, WI (NPI 1417931106).
Provider details
- NPI number
- 1417931106
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 44696 (WI)
Specialties & taxonomies
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
587 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 | 354 | $71 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 112 | $105 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 57 | $108 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 51 | $158 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 13 | $118 |
Typical Medicare-allowed amounts for these services range $71–$158 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 42 | 18 |
| Lisinopril | 35 | — |
| Amlodipine Besylate | 33 | 12 |
| Potassium Chloride | 30 | 19 |
| Atorvastatin Calcium | 29 | 12 |
| Metoprolol Succinate | 29 | 20 |
| Clopidogrel Bisulfate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-06
- Last updated
- 2014-03-24
Frequently asked questions
- What is Mazen Alkhalisy's NPI number?
- Mazen Alkhalisy's National Provider Identifier (NPI) is 1417931106, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mazen Alkhalisy's specialty?
- Mazen Alkhalisy is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mazen Alkhalisy located?
- Mazen Alkhalisy's practice location on file with NPPES is 704 S Webster Ave, Green Bay, WI 54301-3528.
- What is Mazen Alkhalisy's phone number?
- The practice phone number listed in the NPPES registry for Mazen Alkhalisy is (920) 433-3784.
- Does Mazen Alkhalisy accept Medicare?
- Mazen Alkhalisy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mazen Alkhalisy's NPI active?
- Yes — Mazen Alkhalisy's NPI (1417931106) is active in the NPPES registry as of the last update on 2014-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.