2026 NPPES data Internal Medicine Physician NPI 1851779920 MD
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MOHAMMED AL HAMATI, MD

Internal Medicine Physician in BELLEVILLE, Illinois. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
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

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

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 reported

NPI registry status

Active

Issued 05/11/2015

NPI 1851779920

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

487 82% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Illinois

How Internal Medicine Physician compares to other specialties among Illinois providers

Illinois providers

Internal Medicine Physician share within Illinois

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

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 is a Internal Medicine Physician provider practicing in BELLEVILLE, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1851779920. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

MOHAMMED AL HAMATI, MD appears in the CMS NPPES registry as a 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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AL HAMATI most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

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%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 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

4500 MEMORIAL DR
BELLEVILLE, IL 62226

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.

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%
Specialty average (est.)

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.

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.

172,858
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.

Compare Internal Medicine Physician nationally: see state-by-state distribution →

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 172,858 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

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