2026 NPPES data Cardiovascular Disease Physician NPI 1912944133 M.D.
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IAN COHEN, M.D.

Cardiovascular Disease Physician in LAKE FOREST, Illinois. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
5K
Medicare Part D claims · 681 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.1036/100
▲ 11 pts above national avg 83.1 · [object Object]
Industry payments
$339.87
3 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

IAN COHEN, M.D. reported a CMS MIPS final score of 94.1036/100 — above the 83.1 national average — and filed 4,862 Medicare Part D claims in 2023.

94.1036/100
MIPS score · +11 vs avg
5K
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.

IAN COHEN, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

94 Top 25% higher than 75% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

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

Board certification likely (heuristic — not verified)

IAN COHEN, M.D. 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 IAN COHEN, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 05/31/2006

NPI 1912944133

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

4,862 60% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

MIPS final score

94.1036/100 11.003600000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Illinois

How Cardiovascular Disease Physician compares to other specialties among Illinois providers

Illinois providers

Cardiovascular Disease Physician share within Illinois

1. Cardiovascular Disease Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Cardiovascular Disease Physician share within Illinois

Medicare quality performance — MIPS

IAN COHEN, M.D.'s 2023 MIPS final score plotted against the Cardiovascular Disease Physician national average

High performer (top quartile)
MIPS Final Score
94.1036/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Cardiovascular Disease Physician) — 94.1036/100 vs national avg 83.1

0%100%National avg83%94.1%
MIPS final score (Cardiovascular Disease Physician) — 94.1036/100 vs national avg 83.1

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).

IAN COHEN, M.D. appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding M.D. credentials at 800 N WESTMORELAND ROAD SUITE 102, LAKE FOREST, IL, 60045, with a listed phone of (847) 735-8550. NPI 1912944133 was issued on 05/31/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what COHEN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 4,862 prescription claims written by this provider, covering 681 Medicare beneficiaries and totaling roughly $1.0 million in drug spend, split 14% brand-name and 86% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.1036/100 for the 2023 performance year (Quality 82.5938), compared with the national average of 83.1.

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

800 N WESTMORELAND ROAD SUITE 102
LAKE FOREST, IL 60045

Provider Details

NPI 1912944133
Specialty Cardiovascular Disease Physician
Credentials M.D.
Gender Male
NPI Issued 05/31/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

94.1036
Final Score
Avg: 83.1
82.5938
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where IAN COHEN, M.D. 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.

NORTHWESTERN MEDICAL FACULTY FOUNDATION
LAKE FOREST, 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 IAN COHEN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$340

Largest payer

Edwards Lifesciences Corporation

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 IAN COHEN, M.D.. To verify IAN COHEN, 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.

Brand vs generic prescribing mix · Typical

IAN COHEN, M.D. — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 4,862 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.

4,862
Total Claims
$1.0M
Total Drug Cost
681
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
13,650
Total Day Supply
407,690
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$907K
Generic Drug Cost
$108K
Antibiotic Claims
27

Patient Demographics

Average Patient Age
76.1 years
Avg HCC Risk Score
1.47
Gender Split
47% female / 53% male
Age Distribution
<65: 16, 65-74: 275, 75-84: 292, 85+: 98

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What IAN COHEN, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
614
Metoprolol Succinate
582
Amlodipine Besylate
375
Eliquis
Apixaban
300
Metoprolol Tartrate
283
Losartan Potassium
224
Rosuvastatin Calcium
216
Lisinopril
183
Carvedilol
177
Clopidogrel
Clopidogrel Bisulfate
175

* 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 IAN COHEN, M.D. 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

IAN COHEN, M.D.'s 4,862 claims are above 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 COHEN.

Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is IAN COHEN, M.D.'s specialty?
IAN COHEN, M.D. specializes in Cardiovascular Disease Physician and practices in LAKE FOREST, Illinois. Credentials: M.D..
How much does IAN COHEN, M.D. prescribe under Medicare Part D?
In 2023, IAN COHEN, M.D. wrote 4,862 Medicare Part D claims totaling $1.0M in drug costs for 681 beneficiaries.
What is IAN COHEN, M.D.'s Medicare quality score?
IAN COHEN, M.D. has a CMS MIPS Final Score of 94.1036/100 (Quality: 82.5938). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is IAN COHEN, M.D. located?
IAN COHEN, M.D. is located at 800 N WESTMORELAND ROAD SUITE 102, LAKE FOREST, IL, 60045. Phone: (847) 735-8550.
What is IAN COHEN, M.D.'s NPI number?
IAN COHEN, M.D.'s National Provider Identifier (NPI) is 1912944133, issued on 05/31/2006.
Does IAN COHEN, M.D. prescribe more brand-name or generic drugs?
IAN COHEN, M.D.'s prescribing is 14% brand-name and 86% generic drugs by claim count, with $907K in brand drug costs.
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 IAN COHEN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, IAN COHEN, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Metoprolol Succinate, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does IAN COHEN, M.D. accept Medicare?
IAN COHEN, M.D. appears in CMS Medicare data with 4,862 Part D claims and 681 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify IAN COHEN, M.D.'s credentials?
IAN COHEN, M.D.'s NPI is 1912944133 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

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