Ziad Sad Aldeen, MD
NPI 1629683784 · Hospitalist Physician · Madison, WI
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ziad Sad Aldeen, MD is a Hospitalist Physician provider in Madison, WI (NPI 1629683784).
Provider details
- NPI number
- 1629683784
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 125076953 (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
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
223 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 72 | $159 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 55 | $120 |
| Prolonged Hospital Inpatient Or Observation Care Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By ThG0316 | 44 | $28 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 28 | $73 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 12 | $110 |
| Emergency Department Visit With High Level of Medical Decision Making |
Practice location
Mailing address
Additional practice locations (1)
- 1901 W Harrison StChicago, IL 60612-3714Phone: (312) 864-6000
Registry dates
- Enumerated
- 2020-09-14
- Last updated
- 2023-10-20
- Certified
- 2023-10-20
Frequently asked questions
- What is Ziad Sad Aldeen's NPI number?
- Ziad Sad Aldeen's National Provider Identifier (NPI) is 1629683784, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ziad Sad Aldeen's specialty?
- Ziad Sad Aldeen is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Ziad Sad Aldeen located?
- Ziad Sad Aldeen's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792-3714.
- What is Ziad Sad Aldeen's phone number?
- The practice phone number listed in the NPPES registry for Ziad Sad Aldeen is (608) 263-6400.
- Does Ziad Sad Aldeen accept Medicare?
- Ziad Sad Aldeen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ziad Sad Aldeen's NPI active?
- Yes — Ziad Sad Aldeen's NPI (1629683784) is active in the NPPES registry as of the last update on 2023-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.