Hythem Zayed, MD, MPH
NPI 1225217748 · Hospitalist Physician · Bolingbrook, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hythem Zayed, MD, MPH is a Hospitalist Physician provider in Bolingbrook, IL (NPI 1225217748).
Provider details
- NPI number
- 1225217748
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Male
- Sole proprietor
- No
- License
- 036120244 (IL)
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
18 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
1,566 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 50 Minutes99233 | 791 | $120 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 288 | $116 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 179 | $176 |
| Critical Care, First 30-74 Minutes99291 | 97 | $218 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 77 | $80 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians and |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 | 17 |
| Metoprolol Tartrate | 15 | 13 |
| Atorvastatin Calcium | 14 | 14 |
| Prednisone | 12 | — |
| Metoprolol Succinate | 12 | 12 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 11 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-11-01
- Last updated
- 2017-03-06
Frequently asked questions
- What is Hythem Zayed's NPI number?
- Hythem Zayed's National Provider Identifier (NPI) is 1225217748, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hythem Zayed's specialty?
- Hythem Zayed is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Hythem Zayed located?
- Hythem Zayed's practice location on file with NPPES is 1000 Remington Blvd, Bolingbrook, IL 60440-5114.
- What is Hythem Zayed's phone number?
- The practice phone number listed in the NPPES registry for Hythem Zayed is (630) 312-7755.
- Does Hythem Zayed accept Medicare?
- Hythem Zayed is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hythem Zayed's NPI active?
- Yes — Hythem Zayed's NPI (1225217748) is active in the NPPES registry as of the last update on 2017-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.