NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1851779920 MD
Verify on CMS → Mohammed Al Hamati, MD
Internal Medicine Physician in Belleville, 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 172,737 in Internal Medicine 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
487
Medicare Part D claims · 202 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Mohammed Al Hamati, MD filed 487 Medicare Part D claims in 2023 as a Internal Medicine Physician in Belleville, Illinois, prescribing 87% generic.
- 487
- Part D claims, 2023
- 87%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Mohammed Al Hamati, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
487 Top 38% higher than 62% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Mohammed Al Hamati, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations - 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 Mohammed Al Hamati, MD?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
487 82% vs specialty avg
Specialty distribution in Illinois
How Internal Medicine 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 Internal Medicine 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).
Mohammed Al Hamati, MD appears in the CMS NPPES registry as an Internal Medicine Physician provider holding MD credentials at 4500 MEMORIAL DR, Belleville, IL, 62226, with a listed phone of (618) 257-6220. NPI 1851779920 was issued on 05/11/2015.
Medicare Part D records for calendar year 2023 show 487 prescription claims written by this provider, covering 202 Medicare beneficiaries and totaling roughly $34K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 6.0%.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 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 | 1851779920 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/11/2015 |
Hospital and facility affiliations
Facilities where Mohammed Al Hamati, MD 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.
According to CMS billing records, Mohammed Al Hamati, MD is affiliated with 3 Medicare-billing facilities across 2 states.
Cep America-Illinois Hospitalists, LLP
O Fallon, IL
Fairview Heights Medical Group SC
Alton, IL
Galen Inpatient Physicians PC
Fenton, MO
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 Mohammed Al Hamati, MD. To verify Mohammed Al Hamati, MD'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
Mohammed Al Hamati, MD - brand share 13.0%
Internal Medicine Physician average
13% brand-name claims vs 87% generic, on 487 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.
487
Total Claims
$34K
Total Drug Cost
202
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 530
- Total Day Supply
- 11,658
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $30K
- Generic Drug Cost
- $4K
- Opioid Claims
- 29 (6.0% rate)
- Antibiotic Claims
- 95
Patient Demographics
- Average Patient Age
- 75.8 years
- Avg HCC Risk Score
- 2.50
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 23, 65-74: 70, 75-84: 68, 85+: 41
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mohammed Al Hamati, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
26 claims
- Furosemide
Furosemide
25 claims
- Pantoprazole Sodium
Pantoprazole Sodium
25 claims
- Tamsulosin Hcl
Tamsulosin Hcl
19 claims
- Amlodipine Besylate
Amlodipine Besylate
18 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
18 claims
- Cefuroxime
Cefuroxime
17 claims
- Cefdinir
Cefdinir
16 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 26 |
| Furosemide | 25 |
| Pantoprazole Sodium | 25 |
| Tamsulosin Hcl | 19 |
| Amlodipine Besylate | 18 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 18 |
| Cefuroxime Cefuroxime Axetil | 17 |
| Cefdinir | 16 |
| Prednisone | 16 |
| Eliquis Apixaban | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Mohammed Al Hamati, MD fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Mohammed Al Hamati, MD's 487 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Al Hamati.
Dr. Hasan Abad
D.O.
Chicago, IL
Dr. Peter Abadeer
D.O.
Bloomington, IL
Dr. Pamela Abadi
D.O.
Winfield, IL
Dr. Motaz Abas
MD
Peoria, IL
Dr. Estefania Abasolo Lopez
MD
Chicago, IL
Compare Internal Medicine 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 Internal Medicine 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 Mohammed Al Hamati, MD's specialty? ▼
Mohammed Al Hamati, MD specializes in Internal Medicine Physician and practices in Belleville, Illinois. Credentials: MD.
How much does Mohammed Al Hamati, MD prescribe under Medicare Part D? ▼
In 2023, Mohammed Al Hamati, MD wrote 487 Medicare Part D claims totaling $34K in drug costs for 202 beneficiaries.
Where is Mohammed Al Hamati, MD located? ▼
Mohammed Al Hamati, MD is located at 4500 MEMORIAL DR, Belleville, IL, 62226. Phone: (618) 257-6220.
What is Mohammed Al Hamati, MD's NPI number? ▼
Mohammed Al Hamati, MD's National Provider Identifier (NPI) is 1851779920, issued on 05/11/2015.
Does Mohammed Al Hamati, MD prescribe more brand-name or generic drugs? ▼
Mohammed Al Hamati, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $30K in brand drug costs.
Does Mohammed Al Hamati, MD prescribe opioids? ▼
Yes, Mohammed Al Hamati, MD had 29 opioid claims in 2023 with an opioid prescribing rate of 6.0%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Mohammed Al Hamati, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Mohammed Al Hamati, MD's most frequently prescribed drugs include Atorvastatin Calcium, Furosemide, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mohammed Al Hamati, MD accept Medicare? ▼
Mohammed Al Hamati, MD appears in CMS Medicare data with 487 Part D claims and 202 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mohammed Al Hamati, MD's credentials? ▼
Mohammed Al Hamati, MD's NPI is 1851779920 with credentials MD. 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
Compiled from official public sources by the PlainDoctor editorial team.
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.