NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1336197367 M.D.
Verify on CMS → Omar Dalloul, M.D.
Internal Medicine Physician in Libertyville, 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 174,792 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
822
Medicare Part D claims · 95 beneficiaries · Internal Medicine Physician avg: 3K
What the federal data shows
Omar Dalloul, M.D. filed 822 Medicare Part D claims in 2024 as an Internal Medicine Physician in Libertyville, Illinois.
- 822
- Part D claims, 2024
- ≥72nd
- 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.
Federal trust snapshot
What official records show about Omar Dalloul, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1336197367), first enumerated 05/04/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 822 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Omar Dalloul, M.D.'s individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare Dalloul with other Internal Medicine Physician providers
Same primary specialty, same federal CMS NPPES roster.
All 36 Internal Medicine Physician providers in Libertyville, IL →
Also enrolled in Illinois
- Dr. Peter Abadeer, D.O. Bloomington, IL
- Dr. Pamela Abadi, D.O. Winfield, IL
- Dr. Motaz Abas, MD Peoria, IL
- Dr. Elias Abate, M.D. Chicago, IL
- Dr. Maliha Abbas, D.O. Chicago, IL
- Dr. Zareena Abbas, MD Chicago, IL
Other specialties in Libertyville: Physical Therapist (103) · Professional Counselor (85) · Speech-Language Pathologist (79) · Clinical Social Worker (76)
CMS NPPES provider registry desk
NPI 1336197367 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1336197367
- ENUM-LEGACY 2006
- TAX-MEGA 175K Internal Medicine
- RX-LIGHT 822
- BOOK-MID 8,522 in Illinois
- PHOTO-ENUM Farzin Samadi, MD · 2006
Omar Dalloul, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
822 ≥ 72nd percentile 72% of 1,416,883 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 · 2024
◑
Board-eligible specialty (heuristic, not verified)
Omar Dalloul, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Omar Dalloul, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
822 70% 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).
Practice Address
Provider Details
| NPI | 1336197367 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/04/2006 |
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 Omar Dalloul, M.D.. To verify Omar Dalloul, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
822
Total Claims
$99K
Total Drug Cost
95
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,863.9
- Total Day Supply
- 55,007
- Generic Drug Cost
- $23K
- Antibiotic Claims
- 11
Patient Demographics
- Average Patient Age
- 72.9 years
- Avg HCC Risk Score
- 4.10
- Gender Split
- 45% female / 55% male
- Age Distribution
- <65: 14, 65-74: 30, 75-84: 36, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Omar Dalloul, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Losartan Potassium
Losartan Potassium
48 claims
- Lisinopril
Lisinopril
47 claims
- Simvastatin
Simvastatin
45 claims
- Furosemide
Furosemide
43 claims
- Metformin Hcl
Metformin Hcl
43 claims
- Amlodipine Besylate
Amlodipine Besylate
42 claims
- Levothyroxine Sodium
Levothyroxine Sodium
41 claims
- Carvedilol
Carvedilol
39 claims
| Drug | Claims |
|---|---|
| Losartan Potassium | 48 |
| Lisinopril | 47 |
| Simvastatin | 45 |
| Furosemide | 43 |
| Metformin Hcl | 43 |
| Amlodipine Besylate | 42 |
| Levothyroxine Sodium | 41 |
| Carvedilol | 39 |
| Atorvastatin Calcium | 25 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 21 |
* 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 Omar Dalloul, M.D. fits within the Internal Medicine Physician landscape nationally.
174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider
Omar Dalloul, M.D.'s 822 claims are below the specialty average of 2,785.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Dalloul, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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 Dalloul.
One of 8,522 Internal Medicine Physician providers enrolled in Illinois, 11 are shown on this page.
Dr. Abu Abbasi
MD
Chicago, IL
Dr. Ayesha Abbasi
MD
Chicago, IL
Dr. Khalda Abbasi
MD
Naperville, IL
Dr. Misha Abbasi
MD
Chicago, IL
Dr. Elmer Abbo
MD
Burr Ridge, IL
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Omar Dalloul, M.D.'s specialty? ▼
Omar Dalloul, M.D. specializes in Internal Medicine Physician and practices in Libertyville, Illinois. Credentials: M.D..
How much does Omar Dalloul, M.D. prescribe under Medicare Part D? ▼
In 2024, Omar Dalloul, M.D. wrote 822 Medicare Part D claims totaling $99K in drug costs for 95 beneficiaries.
Where is Omar Dalloul, M.D. located? ▼
Omar Dalloul, M.D. is located at 1860 W WINCHESTER RD, Libertyville, IL, 60048. Phone: (847) 247-1010.
What is Omar Dalloul, M.D.'s NPI number? ▼
Omar Dalloul, M.D.'s National Provider Identifier (NPI) is 1336197367, issued on 05/04/2006.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Omar Dalloul, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Omar Dalloul, M.D.'s most frequently prescribed drugs include Losartan Potassium, Lisinopril, Simvastatin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Omar Dalloul, M.D. accept Medicare? ▼
Omar Dalloul, M.D. appears in CMS Medicare data with 822 Part D claims and 95 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Omar Dalloul, M.D.'s credentials? ▼
Omar Dalloul, M.D.'s NPI is 1336197367 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.