Mohamad Alzein, MD
NPI 1902900319 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mohamad Alzein, MD is a Internal Medicine Physician provider in Chicago, IL (NPI 1902900319).
Provider details
- NPI number
- 1902900319
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
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
19 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,492 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 494 | $124 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 476 | $88 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 389 | $27 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 284 | $16 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 262 | $60 |
| Unclassified DrugsJ3490 | 216 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 80 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 329 | 197 |
| Atorvastatin Calcium | 195 | 60 |
| Amlodipine Besylate | 141 | 50 |
| Metformin Hcl | 141 | 50 |
| Azithromycin | 139 | 102 |
| Pantoprazole Sodium | 136 | 50 |
| Levothyroxine Sodium | 95 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mohamad Alzein's NPI number?
- Mohamad Alzein's National Provider Identifier (NPI) is 1902900319, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mohamad Alzein's specialty?
- Mohamad Alzein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mohamad Alzein located?
- Mohamad Alzein's practice location on file with NPPES is 5907 W 63rd St, Chicago, IL 60638.
- What is Mohamad Alzein's phone number?
- The practice phone number listed in the NPPES registry for Mohamad Alzein is (773) 585-4032.
- Does Mohamad Alzein accept Medicare?
- Mohamad Alzein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mohamad Alzein's NPI active?
- Yes — Mohamad Alzein's NPI (1902900319) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.