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2026 NPPES data Sleep Medicine (Internal Medicine) Physician NPI 1205285996 M.D.
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Izayadeth Jennings, M.D.

Sleep Medicine (Internal Medicine) Physician in Lisle, 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 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
116
Medicare Part D claims · 52 beneficiaries · Sleep Medicine (Internal Medicine) Physician avg: 1K
MIPS score
81.5/100
▼ 2 pts below national avg 83.1 · Above neutral
Industry payments
$442.39
10 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Izayadeth Jennings, M.D. reported a CMS MIPS final score of 81.5/100 - below the 83.1 national average - and filed 116 Medicare Part D claims in 2023.

81.5/100
MIPS score · -2 vs avg
116
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.

Izayadeth Jennings, 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

82 36th percentile higher than 36% 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%). This entry sits in this band. 90+: 189,403 scored providers (40%). Above this entry. 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

Where Izayadeth Jennings, M.D. 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, Izayadeth Jennings, M.D. writes more Part D claims than 18% of them and scores higher on MIPS quality than 38% - 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

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 100Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 47Izayadeth Jennings, M.D.-Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 38
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 Izayadeth Jennings, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Izayadeth Jennings, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Izayadeth Jennings, M.D.?

Near national average

NPI registry status

Active

Issued 06/03/2016

NPI 1205285996

Primary specialty

Sleep Medicine (Internal Medicine) Physician

Niche

859 US NPIs in this specialty

Medicare Part D claims

116 91% vs specialty avg

2023 prescription claims

Specialty avg: 1,310

MIPS final score

81.5/100 1.6 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in Illinois

How Sleep Medicine (Internal Medicine) Physician compares to other specialties among Illinois providers

Illinois providers
Clinical Social Worker - 5.2%Clinical Social Worker5.2%Physical Therapist - 5%Physical Therapist5%Mental Health Counselor - 4.5%Mental Health Counselor4.5%Speech-Language Pathologist - 4.2%Speech-Language Pathologist4.2%Student in an Organized Health Care Education/Training Program - 4.2%Student in an Organized Health Care Education/Training Program4.2%Pharmacist - 4.1%Pharmacist4.1%Sleep Medicine (Internal Medicine) Physician - 0%Sleep Medicine (Internal Medicine) Physician0%
Largest specialties in Illinois (% of in-state providers)

Medicare quality performance, MIPS

Izayadeth Jennings, M.D.'s 2023 MIPS final score plotted against the Sleep Medicine (Internal Medicine) Physician national average

Near national average
MIPS Final Score
81.5/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Sleep Medicine (Internal Medicine) Physician) - 81.5/100 vs national avg 83.1

0%100%National avg83%81.5%
MIPS final score (Sleep Medicine (Internal Medicine) Physician) - 81.5/100 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).

Izayadeth Jennings, M.D. appears in the CMS NPPES registry as a Sleep Medicine (Internal Medicine) Physician provider holding M.D. credentials at 3030 WARRENVILLE RD STE 210, Lisle, IL, 60532, with a listed phone of (872) 215-0361. NPI 1205285996 was issued on 06/03/2016.

Medicare Part D records for calendar year 2023 show 116 prescription claims written by this provider, covering 52 Medicare beneficiaries and totaling roughly $5K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81.5/100 for the 2023 performance year, 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

3030 WARRENVILLE RD STE 210
Lisle, IL 60532
(872) 215-0361

Provider Details

NPI 1205285996
Specialty Sleep Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Female
NPI Issued 06/03/2016

CMS Quality Score (MIPS)

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

81.4923
Final Score
Avg: 83.1
38.3075
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Izayadeth Jennings, 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.

Banner Cancer Center Specialists LLC
Gilbert, AZ
Banner Hospital Based Physicians Arizona LLC
Gilbert, AZ

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 Izayadeth Jennings, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$442

Largest payer

Inspire Medical Systems, 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.

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 Izayadeth Jennings, M.D.. To verify Izayadeth Jennings, 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

116
Total Claims
$5K
Total Drug Cost
52
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
128
Total Day Supply
2,601
Generic Drug Cost
$2K
Antibiotic Claims
29

Patient Demographics

Average Patient Age
72.7 years
Avg HCC Risk Score
3.34
Gender Split
46% female / 54% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Pantoprazole Sodium
 13

* 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 IL → All providers in Illinois → Compare specialties →

Sleep Medicine (Internal Medicine) Physician Overview

How Izayadeth Jennings, M.D. 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

Izayadeth Jennings, M.D.'s 116 claims are below the specialty average of 1,310.

Nearby Sleep Medicine (Internal Medicine) Physician Providers in Illinois

Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Jennings.

Dr. Philip Abraham
M.D.
Springfield, IL
Dr. Mirza Abu Sayeem
MBBS
Chicago, IL
Dr. Noman Baig
MD
Chicago, IL
Dr. George Cromydas
M.D.
Arlington Heights, IL
Richard Czuma
Palos Heights, IL

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 Illinois 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 Izayadeth Jennings, M.D.'s specialty? ▼
Izayadeth Jennings, M.D. specializes in Sleep Medicine (Internal Medicine) Physician and practices in Lisle, Illinois. Credentials: M.D..
How much does Izayadeth Jennings, M.D. prescribe under Medicare Part D? ▼
In 2023, Izayadeth Jennings, M.D. wrote 116 Medicare Part D claims totaling $5K in drug costs for 52 beneficiaries.
What is Izayadeth Jennings, M.D.'s Medicare quality score? ▼
Izayadeth Jennings, M.D. has a CMS MIPS Final Score of 81.5/100, Cost: 38.3. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Izayadeth Jennings, M.D. located? ▼
Izayadeth Jennings, M.D. is located at 3030 WARRENVILLE RD STE 210, Lisle, IL, 60532. Phone: (872) 215-0361.
What is Izayadeth Jennings, M.D.'s NPI number? ▼
Izayadeth Jennings, M.D.'s National Provider Identifier (NPI) is 1205285996, issued on 06/03/2016.
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 Izayadeth Jennings, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Izayadeth Jennings, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Izayadeth Jennings, M.D. accept Medicare? ▼
Izayadeth Jennings, M.D. appears in CMS Medicare data with 116 Part D claims and 52 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Izayadeth Jennings, M.D.'s credentials? ▼
Izayadeth Jennings, M.D.'s NPI is 1205285996 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

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.