NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1588097596 MD
Verify on CMS → Atif Hassan, MD
Cardiovascular Disease Physician in Chicago, 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 24,795 in Cardiovascular Disease 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
1K
Medicare Part D claims · 359 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$762.59
34 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
Atif Hassan, MD filed 1,487 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in Chicago, Illinois, prescribing 87% generic.
- 1K
- 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.
Atif Hassan, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,487 Top 20% higher than 80% of 1,370,886 prescribers
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)
Atif Hassan, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Atif Hassan, MD?
Quality data not reportedPrimary specialty
Cardiovascular Disease Physician
Medicare Part D claims
1,487 51% vs specialty avg
Specialty distribution in Illinois
How Cardiovascular Disease 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 Cardiovascular Disease 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).
Atif Hassan, MD appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding MD credentials at 5140 N CALIFORNIA AVE STE 740, Chicago, IL, 60625, with a listed phone of (773) 989-3957. NPI 1588097596 was issued on 08/13/2013.
Medicare Part D records for calendar year 2023 show 1,487 prescription claims written by this provider, covering 359 Medicare beneficiaries and totaling roughly $213K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 1.4%.
Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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 | 1588097596 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/13/2013 |
Hospital and facility affiliations
Facilities where Atif Hassan, 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.
Endeavor Health Medical Group
Glenview, IL
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 Atif Hassan, MD. Source: openpaymentsdata.cms.gov.
Total received
$763
Largest payer
Abbott Laboratories
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.
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 Atif Hassan, MD. To verify Atif Hassan, 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
Atif Hassan, MD - brand share 13.0%
Cardiovascular Disease Physician average
13% brand-name claims vs 87% generic, on 1,487 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.
1,487
Total Claims
$213K
Total Drug Cost
359
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,841
- Total Day Supply
- 114,759
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $185K
- Generic Drug Cost
- $28K
- Opioid Claims
- 21 (1.4% rate)
Patient Demographics
- Average Patient Age
- 75.2 years
- Avg HCC Risk Score
- 1.71
- Gender Split
- 48% female / 52% male
- Age Distribution
- <65: 23, 65-74: 158, 75-84: 118, 85+: 60
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Atif Hassan, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
169 claims
- Carvedilol
Carvedilol
122 claims
- Clopidogrel
Clopidogrel
121 claims
- Furosemide
Furosemide
105 claims
- Amlodipine Besylate
Amlodipine Besylate
104 claims
- Metoprolol Succinate
Metoprolol Succinate
90 claims
- Metoprolol Tartrate
Metoprolol Tartrate
84 claims
- Lisinopril
Lisinopril
74 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 169 |
| Carvedilol | 122 |
| Clopidogrel Clopidogrel Bisulfate | 121 |
| Furosemide | 105 |
| Amlodipine Besylate | 104 |
| Metoprolol Succinate | 90 |
| Metoprolol Tartrate | 84 |
| Lisinopril | 74 |
| Eliquis Apixaban | 62 |
| Nifedipine Er Nifedipine | 48 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Cardiovascular Disease Physician Overview
How Atif Hassan, MD fits within the Cardiovascular Disease Physician landscape nationally.
24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider
Atif Hassan, MD's 1,487 claims are below the specialty average of 3,033.
Nearby Cardiovascular Disease Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Hassan.
Dr. Nicolaos Abariotis
MD
Chicago, IL
Dr. Tahir Abbasi
M.D.
Hazel Crest, IL
Dr. Rana Abdallah
DNP, APRN, FNP-C
Park Ridge, IL
Dr. Ashraf Abourahma
M.D.
Oak Lawn, IL
Dr. Bruce Abramowitz
M.D.,F.A.C.C.
Oak Lawn, IL
Compare Cardiovascular Disease 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 Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Cardiovascular Disease 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.
Healthcare Guides
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Medical Specialties Explained
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Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
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Explore Illinois
Frequently Asked Questions
What is Atif Hassan, MD's specialty? ▼
Atif Hassan, MD specializes in Cardiovascular Disease Physician and practices in Chicago, Illinois. Credentials: MD.
How much does Atif Hassan, MD prescribe under Medicare Part D? ▼
In 2023, Atif Hassan, MD wrote 1,487 Medicare Part D claims totaling $213K in drug costs for 359 beneficiaries.
Where is Atif Hassan, MD located? ▼
Atif Hassan, MD is located at 5140 N CALIFORNIA AVE STE 740, Chicago, IL, 60625. Phone: (773) 989-3957.
What is Atif Hassan, MD's NPI number? ▼
Atif Hassan, MD's National Provider Identifier (NPI) is 1588097596, issued on 08/13/2013.
Does Atif Hassan, MD prescribe more brand-name or generic drugs? ▼
Atif Hassan, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $185K in brand drug costs.
Does Atif Hassan, MD prescribe opioids? ▼
Yes, Atif Hassan, MD had 21 opioid claims in 2023 with an opioid prescribing rate of 1.4%.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does Atif Hassan, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Atif Hassan, MD's most frequently prescribed drugs include Atorvastatin Calcium, Carvedilol, Clopidogrel. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Atif Hassan, MD accept Medicare? ▼
Atif Hassan, MD appears in CMS Medicare data with 1,487 Part D claims and 359 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Atif Hassan, MD's credentials? ▼
Atif Hassan, MD's NPI is 1588097596 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.
- 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.