NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1891723912 MD,MS
Verify on CMS → Ihab Hajjar, MD,MS
Geriatric Medicine (Internal Medicine) Physician in Dallas, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,161 in Geriatric Medicine (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
185
Medicare Part D claims · 38 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
MIPS score
74.6/100
▼ 9 pts below national avg 83.1 · Mid-tier
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
Ihab Hajjar, MD,MS reported a CMS MIPS final score of 74.6/100 - below the 83.1 national average - and filed 185 Medicare Part D claims in 2023.
- 74.6/100
- MIPS score · -9 vs avg
- 185
- Part D claims, 2023
- 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.
Ihab Hajjar, MD,MS's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
75 12th percentile higher than 12% 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 Ihab Hajjar, MD,MS sits
This provider among geriatric medicine (internal medicine) physician peers
Across the 724 geriatric medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ihab Hajjar, MD,MS writes more Part D claims than 15% of them and scores higher on MIPS quality than 17% - placing this provider in the lower-volume, lower-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 geriatric medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is Ihab Hajjar, MD,MS. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ihab Hajjar, MD,MS 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 Ihab Hajjar, MD,MS?
Below national averagePrimary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
185 96% vs specialty avg
MIPS final score
74.6/100 8.5 pts vs avg
Specialty distribution in Texas
How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Texas providers
Medicare quality performance, MIPS
Ihab Hajjar, MD,MS's 2023 MIPS final score plotted against the Geriatric Medicine (Internal Medicine) Physician national average
- MIPS Final Score
- 74.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Geriatric Medicine (Internal Medicine) Physician) - 74.6/100 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).
Ihab Hajjar, MD,MS appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding MD,MS credentials at 5303 HARRY HINES BLVD, Dallas, TX, 75390, with a listed phone of (323) 442-5100. NPI 1891723912 was issued on 06/29/2006.
Medicare Part D records for calendar year 2023 show 185 prescription claims written by this provider, covering 38 Medicare beneficiaries and totaling roughly $7K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 74.6/100 for the 2023 performance year (Quality 56.1, Cost 59.2), compared with the national average of 83.1.
Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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 | 1891723912 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | MD,MS |
| Gender | Male |
| NPI Issued | 06/29/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
74.5984
Final Score
Avg: 83.1
56.1252
Quality
59.2027
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Ihab Hajjar, MD,MS 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 Texas Southwestern Medical Center AT Dallas
Dallas, TX
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 - Texas TMB 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 ~77K Texas medical licensees in 2023 - they are NOT specific to Ihab Hajjar, MD,MS. To verify Ihab Hajjar, MD,MS's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB 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 Texas 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 2023.
185
Total Claims
$7K
Total Drug Cost
38
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 366
- Total Day Supply
- 10,652
- Brand Drug Cost
- $0
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 76.4 years
- Avg HCC Risk Score
- 1.55
- Gender Split
- 63% female / 37% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ihab Hajjar, MD,MS prescribes most
Top Medicare Part D drugs by claim count, 2023
- Donepezil Hcl
Donepezil Hcl
64 claims
- Trazodone Hcl
Trazodone Hcl
37 claims
- Escitalopram Oxalate 11
Escitalopram Oxalate
11 claims
| Drug | Claims |
|---|---|
| Donepezil Hcl | 64 |
| Trazodone Hcl | 37 |
| Escitalopram Oxalate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Geriatric Medicine (Internal Medicine) Physician in TX →
All providers in Texas →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How Ihab Hajjar, MD,MS fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider
Ihab Hajjar, MD,MS's 185 claims are below the specialty average of 4,450.
Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Hajjar.
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 Texas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Geriatric Medicine (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 Ihab Hajjar, MD,MS's specialty? ▼
Ihab Hajjar, MD,MS specializes in Geriatric Medicine (Internal Medicine) Physician and practices in Dallas, Texas. Credentials: MD,MS.
How much does Ihab Hajjar, MD,MS prescribe under Medicare Part D? ▼
In 2023, Ihab Hajjar, MD,MS wrote 185 Medicare Part D claims totaling $7K in drug costs for 38 beneficiaries.
What is Ihab Hajjar, MD,MS's Medicare quality score? ▼
Ihab Hajjar, MD,MS has a CMS MIPS Final Score of 74.6/100 (Quality: 56.1, Cost: 59.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Ihab Hajjar, MD,MS located? ▼
Ihab Hajjar, MD,MS is located at 5303 HARRY HINES BLVD, Dallas, TX, 75390. Phone: (323) 442-5100.
What is Ihab Hajjar, MD,MS's NPI number? ▼
Ihab Hajjar, MD,MS's National Provider Identifier (NPI) is 1891723912, issued on 06/29/2006.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does Ihab Hajjar, MD,MS prescribe most often? ▼
Based on 2023 Medicare Part D data, Ihab Hajjar, MD,MS's most frequently prescribed drugs include Donepezil Hcl, Trazodone Hcl, Escitalopram Oxalate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ihab Hajjar, MD,MS accept Medicare? ▼
Ihab Hajjar, MD,MS appears in CMS Medicare data with 185 Part D claims and 38 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ihab Hajjar, MD,MS's credentials? ▼
Ihab Hajjar, MD,MS's NPI is 1891723912 with credentials MD,MS. 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.