NPI registry status
Active
2026 NPPES data Sleep Medicine (Internal Medicine) Physician NPI 1104806462 MD
Verify on CMS → Zahir Yousaf, MD
Sleep Medicine (Internal Medicine) Physician in Huntingtown, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 859 in Sleep 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
2K
Medicare Part D claims · 247 beneficiaries · Sleep Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
88.5/100
▲ 5 pts above national avg 83.1 · Above neutral
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
Zahir Yousaf, MD reported a CMS MIPS final score of 88.5/100 - above the 83.1 national average - and filed 2,335 Medicare Part D claims in 2023.
- 88.5/100
- MIPS score · +5 vs avg
- 2K
- Part D claims, 2023
- 80%
- 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.
Zahir Yousaf, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
89 Top 44% higher than 56% 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 Zahir Yousaf, MD sits
This provider among sleep medicine (internal medicine) physician peers
Across the 295 sleep medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Zahir Yousaf, MD writes more Part D claims than 79% of them and scores higher on MIPS quality than 62% - 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 sleep medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is Zahir Yousaf, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Zahir Yousaf, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Zahir Yousaf, MD?
High performer (top quartile)Primary specialty
Sleep Medicine (Internal Medicine) Physician
Medicare Part D claims
2,335 78% vs specialty avg
MIPS final score
88.5/100 5.4 pts vs avg
Specialty distribution in Maryland
How Sleep Medicine (Internal Medicine) Physician compares to other specialties among Maryland providers
Medicare quality performance, MIPS
Zahir Yousaf, MD's 2023 MIPS final score plotted against the Sleep Medicine (Internal Medicine) Physician national average
- MIPS Final Score
- 88.5/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Sleep Medicine (Internal Medicine) Physician) - 88.5/100 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).
Zahir Yousaf, MD appears in the CMS NPPES registry as a Sleep Medicine (Internal Medicine) Physician provider holding MD credentials at 3995 OLD TOWN RD STE 201, Huntingtown, MD, 20639, with a listed phone of (410) 535-0666. NPI 1104806462 was issued on 01/20/2006.
Medicare Part D records for calendar year 2023 show 2,335 prescription claims written by this provider, covering 247 Medicare beneficiaries and totaling roughly $477K in drug spend, split 20% brand-name and 80% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 88.5/100 for the 2023 performance year (Quality 100, Cost 61.8), compared with the national average of 83.1.
Sleep Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 859 enrolled providers across 52 states and an average of 1,310 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 | 1104806462 |
|---|---|
| Specialty | Sleep Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 01/20/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
88.5255
Final Score
Avg: 83.1
100
Quality
61.7517
Cost
Reporting: Individual
Brand vs generic prescribing mix · Typical
Zahir Yousaf, MD - brand share 20.0%
Sleep Medicine (Internal Medicine) Physician average
20% brand-name claims vs 80% generic, on 2,335 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.
2,335
Total Claims
$477K
Total Drug Cost
247
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,842
- Total Day Supply
- 171,463
- Brand vs Generic
- 20% brand / 80% generic
- Brand Drug Cost
- $436K
- Generic Drug Cost
- $41K
- Antibiotic Claims
- 155
Patient Demographics
- Average Patient Age
- 77.0 years
- Avg HCC Risk Score
- 1.42
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 17, 65-74: 74, 75-84: 109, 85+: 47
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Zahir Yousaf, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Albuterol Sulfate …
Albuterol Sulfate Hfa
140 claims
- Trelegy Ellipta
Trelegy Ellipta
127 claims
- Azithromycin
Azithromycin
117 claims
- Levothyroxine Sodium
Levothyroxine Sodium
105 claims
- Atorvastatin Calcium
Atorvastatin Calcium
102 claims
- Metformin Hcl
Metformin Hcl
98 claims
- Losartan Potassium
Losartan Potassium
71 claims
- Simvastatin
Simvastatin
70 claims
| Drug | Claims |
|---|---|
| Albuterol Sulfate Hfa Albuterol Sulfate | 140 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 127 |
| Azithromycin | 117 |
| Levothyroxine Sodium | 105 |
| Atorvastatin Calcium | 102 |
| Metformin Hcl | 98 |
| Losartan Potassium | 71 |
| Simvastatin | 70 |
| Amlodipine Besylate | 69 |
| Omeprazole | 65 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Sleep Medicine (Internal Medicine) Physician in MD →
All providers in Maryland →
Compare specialties →
Sleep Medicine (Internal Medicine) Physician Overview
How Zahir Yousaf, MD fits within the Sleep Medicine (Internal Medicine) Physician landscape nationally.
859
Sleep Medicine (Internal Medicine) Physician Providers in US
52
States with Sleep Medicine (Internal Medicine) Physician
1,310
Avg Claims per Provider
Zahir Yousaf, MD's 2,335 claims are above the specialty average of 1,310.
Nearby Sleep Medicine (Internal Medicine) Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Yousaf.
Dr. Thomas Burke
M.D.
Fallston, MD
Dr. Michael Coppola
M.D.
Glen Burnie, MD
Dr. Roman Culjat
M.D.
Baltimore, MD
Dr. Sirisha Devabhaktuni
MD
Bethesda, MD
Dr. Beverly Fang
MD
Baltimore, MD
Compare Sleep Medicine (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 Maryland medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Sleep 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 Zahir Yousaf, MD's specialty? ▼
Zahir Yousaf, MD specializes in Sleep Medicine (Internal Medicine) Physician and practices in Huntingtown, Maryland. Credentials: MD.
How much does Zahir Yousaf, MD prescribe under Medicare Part D? ▼
In 2023, Zahir Yousaf, MD wrote 2,335 Medicare Part D claims totaling $477K in drug costs for 247 beneficiaries.
What is Zahir Yousaf, MD's Medicare quality score? ▼
Zahir Yousaf, MD has a CMS MIPS Final Score of 88.5/100 (Quality: 100, Cost: 61.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Zahir Yousaf, MD located? ▼
Zahir Yousaf, MD is located at 3995 OLD TOWN RD STE 201, Huntingtown, MD, 20639. Phone: (410) 535-0666.
What is Zahir Yousaf, MD's NPI number? ▼
Zahir Yousaf, MD's National Provider Identifier (NPI) is 1104806462, issued on 01/20/2006.
Does Zahir Yousaf, MD prescribe more brand-name or generic drugs? ▼
Zahir Yousaf, MD's prescribing is 20% brand-name and 80% generic drugs by claim count, with $436K in brand drug costs.
How many Sleep Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 859 Sleep Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Sleep Medicine (Internal Medicine) Physician provider writes 1,310 Medicare Part D claims per year.
What drugs does Zahir Yousaf, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Zahir Yousaf, MD's most frequently prescribed drugs include Albuterol Sulfate Hfa, Trelegy Ellipta, Azithromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Zahir Yousaf, MD accept Medicare? ▼
Zahir Yousaf, MD appears in CMS Medicare data with 2,335 Part D claims and 247 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Zahir Yousaf, MD's credentials? ▼
Zahir Yousaf, MD's NPI is 1104806462 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.