NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1912078452 MD
Verify on CMS → Ossama Al-Assafeen, MD
Internal Medicine Physician in Lebanon, Missouri.
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
18K
Medicare Part D claims · 946 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
86%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
Industry payments
$1.5K
78 payments · CMS Open Payments (Sunshine Act)
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
Ossama Al-Assafeen, MD reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 18,133 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 18K
- Part D claims, 2023
- 86%
- 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.
Ossama Al-Assafeen, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Ossama Al-Assafeen, MD sits
This provider among internal medicine physician peers
Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ossama Al-Assafeen, MD writes more Part D claims than 98% of them and scores higher on MIPS quality than 93% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Ossama Al-Assafeen, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ossama Al-Assafeen, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Ossama Al-Assafeen, MD?
High performer (top quartile)Primary specialty
Internal Medicine Physician
Medicare Part D claims
18,133 7× vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in Missouri
How Internal Medicine Physician compares to other specialties among Missouri providers
Medicare quality performance, MIPS
Ossama Al-Assafeen, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 100/100 vs national avg 83.1
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).
Ossama Al-Assafeen, MD appears in the CMS NPPES registry as an Internal Medicine Physician provider holding MD credentials at 120 HOSPITAL DR, Lebanon, MO, 65536, with a listed phone of (417) 533-6746. NPI 1912078452 was issued on 11/13/2006.
Medicare Part D records for calendar year 2023 show 18,133 prescription claims written by this provider, covering 946 Medicare beneficiaries and totaling roughly $2.1 million in drug spend, split 13% brand-name and 86% generic by claim count, with an opioid prescribing rate of 2.3%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year, compared with the national average of 83.1.
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 | 1912078452 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/13/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
100
Promoting Interoperability
Reporting: Individual
Hospital and facility affiliations
Facilities where Ossama Al-Assafeen, 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.
Belton Family Practice Clinic LLC
Belton, 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).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Ossama Al-Assafeen, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.5K
Largest payer
ABBVIE INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
Ossama Al-Assafeen, MD - brand share 13.0%
Internal Medicine Physician average
13% brand-name claims vs 86% generic, on 18,133 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.
18,133
Total Claims
$2.1M
Total Drug Cost
946
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 35,784
- Total Day Supply
- 1,028,458
- Brand vs Generic
- 13% brand / 86% generic
- Brand Drug Cost
- $1.8M
- Generic Drug Cost
- $360K
- Opioid Claims
- 409 (2.3% rate)
- Antibiotic Claims
- 832
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 1.39
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 110, 65-74: 428, 75-84: 305, 85+: 103
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ossama Al-Assafeen, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
720 claims
- Levothyroxine Sodium
Levothyroxine Sodium
714 claims
- Pantoprazole Sodium
Pantoprazole Sodium
575 claims
- Gabapentin
Gabapentin
416 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
402 claims
- Metoprolol Succinate
Metoprolol Succinate
388 claims
- Lisinopril
Lisinopril
373 claims
- Trazodone Hcl
Trazodone Hcl
298 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 720 |
| Levothyroxine Sodium | 714 |
| Pantoprazole Sodium | 575 |
| Gabapentin | 416 |
| Rosuvastatin Calcium | 402 |
| Metoprolol Succinate | 388 |
| Lisinopril | 373 |
| Trazodone Hcl | 298 |
| Glimepiride | 294 |
| Amlodipine Besylate | 267 |
* 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 Ossama Al-Assafeen, 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
Ossama Al-Assafeen, MD's 18,133 claims are above the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Al-Assafeen.
Dr. Betty Abban
M.D.
Springfield, MO
Dr. Amer Abbas
MD
Chesterfield, MO
Dr. Marghoob Abbas
M.D.
St. Joseph, MO
Dr. Muhammad Khalid Abbas
M.D.
Springfield, MO
Dr. Sundas Abbas
MD
Richmond Heights, MO
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 Missouri 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 Ossama Al-Assafeen, MD's specialty? ▼
Ossama Al-Assafeen, MD specializes in Internal Medicine Physician and practices in Lebanon, Missouri. Credentials: MD.
How much does Ossama Al-Assafeen, MD prescribe under Medicare Part D? ▼
In 2023, Ossama Al-Assafeen, MD wrote 18,133 Medicare Part D claims totaling $2.1M in drug costs for 946 beneficiaries.
What is Ossama Al-Assafeen, MD's Medicare quality score? ▼
Ossama Al-Assafeen, MD has a CMS MIPS Final Score of 100/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Ossama Al-Assafeen, MD located? ▼
Ossama Al-Assafeen, MD is located at 120 HOSPITAL DR, Lebanon, MO, 65536. Phone: (417) 533-6746.
What is Ossama Al-Assafeen, MD's NPI number? ▼
Ossama Al-Assafeen, MD's National Provider Identifier (NPI) is 1912078452, issued on 11/13/2006.
Does Ossama Al-Assafeen, MD prescribe more brand-name or generic drugs? ▼
Ossama Al-Assafeen, MD's prescribing is 13% brand-name and 86% generic drugs by claim count, with $1.8M in brand drug costs.
Does Ossama Al-Assafeen, MD prescribe opioids? ▼
Yes, Ossama Al-Assafeen, MD had 409 opioid claims in 2023 with an opioid prescribing rate of 2.3%.
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 Ossama Al-Assafeen, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Ossama Al-Assafeen, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ossama Al-Assafeen, MD accept Medicare? ▼
Ossama Al-Assafeen, MD appears in CMS Medicare data with 18,133 Part D claims and 946 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ossama Al-Assafeen, MD's credentials? ▼
Ossama Al-Assafeen, MD's NPI is 1912078452 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.