NPI registry status
Active
2026 NPPES data Hospitalist Physician NPI 1801141569 M.D.
Verify on CMS → Alexandre Zaharia, M.D.
Hospitalist Physician in Chicago, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,938 in Hospitalist Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
454
Medicare Part D claims · 94 beneficiaries · Hospitalist Physician avg: 888
Generic prescribing
74%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Alexandre Zaharia, M.D. filed 454 Medicare Part D claims in 2023 as a Hospitalist Physician in Chicago, Illinois, prescribing 74% generic.
- 454
- Part D claims, 2023
- 74%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥62nd
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Alexandre Zaharia, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
454 ≥ 62nd percentile 62% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Alexandre Zaharia, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Alexandre Zaharia, M.D.?
Quality data not reportedPrimary specialty
Hospitalist Physician
Medicare Part D claims
454 49% vs specialty avg
Specialty distribution in Illinois
How Hospitalist Physician compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Hospitalist Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Alexandre Zaharia, M.D. appears in the CMS NPPES registry as a Hospitalist Physician provider holding M.D. credentials at 5841 S MARYLAND AVE, Chicago, IL, 60637, with a listed phone of (888) 824-0200. NPI 1801141569 was issued on 07/18/2012.
Medicare Part D records for calendar year 2023 show 454 prescription claims written by this provider, covering 94 Medicare beneficiaries and totaling roughly $41K in drug spend, split 23% brand-name and 74% generic by claim count, with an opioid prescribing rate of 5.5%.
Hospitalist Physician is a mid-sized specialty nationwide, with 16,938 enrolled providers across 54 states and an average of 888 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1801141569 |
|---|---|
| Specialty | Hospitalist Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/18/2012 |
Hospital and facility affiliations
Facilities where Alexandre Zaharia, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
University OF Chicago
Crown Point, IN
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to Alexandre Zaharia, M.D.. To verify Alexandre Zaharia, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Alexandre Zaharia, M.D. - brand share 23.0%
Hospitalist Physician average
23% brand-name claims vs 74% generic, on 454 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
454
Total Claims
$41K
Total Drug Cost
94
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 507
- Total Day Supply
- 12,158
- Brand vs Generic
- 23% brand / 74% generic
- Brand Drug Cost
- $34K
- Generic Drug Cost
- $6K
- Opioid Claims
- 25 (5.5% rate)
- Antibiotic Claims
- 33
Patient Demographics
- Average Patient Age
- 68.4 years
- Avg HCC Risk Score
- 4.20
- Gender Split
- 62% female / 38% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alexandre Zaharia, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
28 claims
- Famotidine
Famotidine
16 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
15 claims
- Metoprolol Succinate
Metoprolol Succinate
15 claims
- Prednisone
Prednisone
15 claims
- Metoprolol Tartrate
Metoprolol Tartrate
14 claims
- Sucralfate
Sucralfate
14 claims
- Entresto
Entresto
12 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 28 |
| Famotidine | 16 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 15 |
| Metoprolol Succinate | 15 |
| Prednisone | 15 |
| Metoprolol Tartrate | 14 |
| Sucralfate | 14 |
| Entresto Sacubitril/Valsartan | 12 |
| Pantoprazole Sodium | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hospitalist Physician Overview
How Alexandre Zaharia, M.D. fits within the Hospitalist Physician landscape nationally.
16,938
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider
Alexandre Zaharia, M.D.'s 454 claims are below the specialty average of 888.
Nearby Hospitalist Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Zaharia.
Dr. Osamah Abdallah
M.D.
Maywood, IL
Sufyan Abdulmujeeb
Niles, IL
Dr. Eyad Abdulrazzak
MD
Evanston, IL
Dr. Gina Abraham
MD
Franklin Park, IL
Dr. Rebecca Abraham
PA-C
Chicago, IL
Compare Hospitalist Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hospitalist Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Alexandre Zaharia, M.D.'s specialty? ▼
Alexandre Zaharia, M.D. specializes in Hospitalist Physician and practices in Chicago, Illinois. Credentials: M.D..
How much does Alexandre Zaharia, M.D. prescribe under Medicare Part D? ▼
In 2023, Alexandre Zaharia, M.D. wrote 454 Medicare Part D claims totaling $41K in drug costs for 94 beneficiaries.
Where is Alexandre Zaharia, M.D. located? ▼
Alexandre Zaharia, M.D. is located at 5841 S MARYLAND AVE, Chicago, IL, 60637. Phone: (888) 824-0200.
What is Alexandre Zaharia, M.D.'s NPI number? ▼
Alexandre Zaharia, M.D.'s National Provider Identifier (NPI) is 1801141569, issued on 07/18/2012.
Does Alexandre Zaharia, M.D. prescribe more brand-name or generic drugs? ▼
Alexandre Zaharia, M.D.'s prescribing is 23% brand-name and 74% generic drugs by claim count, with $34K in brand drug costs.
Does Alexandre Zaharia, M.D. prescribe opioids? ▼
Yes, Alexandre Zaharia, M.D. had 25 opioid claims in 2023 with an opioid prescribing rate of 5.5%.
How many Hospitalist Physician providers are there in the US? ▼
There are 16,938 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does Alexandre Zaharia, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Alexandre Zaharia, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Famotidine, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alexandre Zaharia, M.D. accept Medicare? ▼
Alexandre Zaharia, M.D. appears in CMS Medicare data with 454 Part D claims and 94 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alexandre Zaharia, M.D.'s credentials? ▼
Alexandre Zaharia, M.D.'s NPI is 1801141569 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.