2026 NPPES data Internal Medicine Physician NPI 1679518518 M.D.
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MAIMOONA AIJAZ, M.D.

Internal Medicine Physician in JOLIET, 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
3K
Medicare Part D claims · 200 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
95.137/100
▲ 12 pts above national avg 83.1 · [object Object]
Industry payments
$1.4K
83 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MAIMOONA AIJAZ, M.D. reported a CMS MIPS final score of 95.137/100 — above the 83.1 national average — and filed 3,456 Medicare Part D claims in 2023.

95.137/100
MIPS score · +12 vs avg
3K
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.

MAIMOONA AIJAZ, 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

95 Top 21% higher than 79% 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)

MAIMOONA AIJAZ, M.D. 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 MAIMOONA AIJAZ, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 06/17/2006

NPI 1679518518

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

3,456 27% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

95.137/100 12.037000000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Illinois

How Internal Medicine Physician compares to other specialties among Illinois providers

Illinois providers

Internal Medicine Physician share within Illinois

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

Medicare quality performance — MIPS

MAIMOONA AIJAZ, M.D.'s 2023 MIPS final score plotted against the Internal Medicine Physician national average

High performer (top quartile)
MIPS Final Score
95.137/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) — 95.137/100 vs national avg 83.1

0%100%National avg83%95.1%
MIPS final score (Internal Medicine Physician) — 95.137/100 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).

MAIMOONA AIJAZ, M.D. is a Internal Medicine Physician provider practicing in JOLIET, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1679518518. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

MAIMOONA AIJAZ, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 1717 GLENWOOD AVE, JOLIET, IL, 60435, with a listed phone of (815) 744-8600. NPI 1679518518 was issued on 06/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AIJAZ 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 3,456 prescription claims written by this provider, covering 200 Medicare beneficiaries and totaling roughly $421K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 1.1%. 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 95.137/100 for the 2023 performance year (Quality 88.3333, Cost 83.08), compared with the national average of 83.1.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

1717 GLENWOOD AVE
JOLIET, IL 60435

Provider Details

NPI 1679518518
Specialty Internal Medicine Physician
Credentials M.D.
Gender Female
NPI Issued 06/17/2006

CMS Quality Score (MIPS)

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

95.137
Final Score
Avg: 83.1
88.3333
Quality
83.08
Cost

Reporting: Individual

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 MAIMOONA AIJAZ, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.4K

Largest payer

AIMMUNE THERAPEUTICS, 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 MAIMOONA AIJAZ, M.D.. To verify MAIMOONA AIJAZ, 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

MAIMOONA AIJAZ, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 3,456 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.

3,456
Total Claims
$421K
Total Drug Cost
200
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,026
Total Day Supply
204,713
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$365K
Generic Drug Cost
$53K
Opioid Claims
38 (1.1% rate)
Antibiotic Claims
106

Patient Demographics

Average Patient Age
71.1 years
Avg HCC Risk Score
1.39
Gender Split
67% female / 34% 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
Simvastatin
179
Lisinopril
165
Levothyroxine Sodium
155
Amlodipine Besylate
146
Metformin Hcl
136
Gabapentin
128
Omeprazole
108
Sertraline Hcl
94
Alprazolam
90
Albuterol Sulfate Hfa
Albuterol Sulfate
87

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Internal Medicine Physician Overview

How MAIMOONA AIJAZ, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

MAIMOONA AIJAZ, M.D.'s 3,456 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Illinois

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MAIMOONA AIJAZ, M.D.'s specialty?
MAIMOONA AIJAZ, M.D. specializes in Internal Medicine Physician and practices in JOLIET, Illinois. Credentials: M.D..
How much does MAIMOONA AIJAZ, M.D. prescribe under Medicare Part D?
In 2023, MAIMOONA AIJAZ, M.D. wrote 3,456 Medicare Part D claims totaling $421K in drug costs for 200 beneficiaries.
What is MAIMOONA AIJAZ, M.D.'s Medicare quality score?
MAIMOONA AIJAZ, M.D. has a CMS MIPS Final Score of 95.137/100 (Quality: 88.3333, Cost: 83.08). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MAIMOONA AIJAZ, M.D. located?
MAIMOONA AIJAZ, M.D. is located at 1717 GLENWOOD AVE, JOLIET, IL, 60435. Phone: (815) 744-8600.
What is MAIMOONA AIJAZ, M.D.'s NPI number?
MAIMOONA AIJAZ, M.D.'s National Provider Identifier (NPI) is 1679518518, issued on 06/17/2006.
Does MAIMOONA AIJAZ, M.D. prescribe more brand-name or generic drugs?
MAIMOONA AIJAZ, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $365K in brand drug costs.
Does MAIMOONA AIJAZ, M.D. prescribe opioids?
Yes, MAIMOONA AIJAZ, M.D. had 38 opioid claims in 2023 with an opioid prescribing rate of 1.1%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does MAIMOONA AIJAZ, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MAIMOONA AIJAZ, M.D.'s most frequently prescribed drugs include Simvastatin, Lisinopril, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MAIMOONA AIJAZ, M.D. accept Medicare?
MAIMOONA AIJAZ, M.D. appears in CMS Medicare data with 3,456 Part D claims and 200 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MAIMOONA AIJAZ, M.D.'s credentials?
MAIMOONA AIJAZ, M.D.'s NPI is 1679518518 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