2026 NPPES data Internal Medicine Physician NPI 1255447421 MD
Verify on CMS →

NDUDI ANIEMEKA, MD

Internal Medicine Physician in CHICAGO, 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
13K
Medicare Part D claims · 305 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
96.6206/100
▲ 14 pts above national avg 83.1 · [object Object]
Industry payments
$2.3K
101 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

NDUDI ANIEMEKA, MD reported a CMS MIPS final score of 96.6206/100 — above the 83.1 national average — and filed 13,353 Medicare Part D claims in 2023.

96.6206/100
MIPS score · +14 vs avg
13K
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.

NDUDI ANIEMEKA, MD's MIPS score vs every scored U.S. clinician

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

97 Top 17% higher than 83% 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)

NDUDI ANIEMEKA, 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 NDUDI ANIEMEKA, MD?

High performer (top quartile)

NPI registry status

Active

Issued 08/21/2006

NPI 1255447421

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

13,353 392% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

96.6206/100 13.520600000000002% 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

NDUDI ANIEMEKA, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average

High performer (top quartile)
MIPS Final Score
96.6206/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) — 96.6206/100 vs national avg 83.1

0%100%National avg83%96.6%
MIPS final score (Internal Medicine Physician) — 96.6206/100 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).

NDUDI ANIEMEKA, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 5219 W MADISON ST, CHICAGO, IL, 60644, with a listed phone of (773) 378-4823. NPI 1255447421 was issued on 08/21/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ANIEMEKA 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 13,353 prescription claims written by this provider, covering 305 Medicare beneficiaries and totaling roughly $2.4 million in drug spend, split 20% brand-name and 80% generic by claim count, with an opioid prescribing rate of 2.6%. 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 96.6206/100 for the 2023 performance year (Quality 100, Cost 55.402), 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

5219 W MADISON ST
CHICAGO, IL 60644

Provider Details

NPI 1255447421
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 08/21/2006

CMS Quality Score (MIPS)

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

96.6206
Final Score
Avg: 83.1
100
Quality
55.402
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 NDUDI ANIEMEKA, MD. Source: openpaymentsdata.cms.gov.

Total received

$2.3K

Largest payer

Teva Pharmaceuticals USA, 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 NDUDI ANIEMEKA, MD. To verify NDUDI ANIEMEKA, 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

NDUDI ANIEMEKA, MD — brand share 20.0%
Specialty average (est.)

20% brand-name claims vs 80% generic, on 13,353 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.

13,353
Total Claims
$2.4M
Total Drug Cost
305
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
17,517
Total Day Supply
479,356
Brand vs Generic
20% brand / 80% generic
Brand Drug Cost
$2.1M
Generic Drug Cost
$361K
Opioid Claims
352 (2.6% rate)
Antibiotic Claims
166

Patient Demographics

Average Patient Age
64.1 years
Avg HCC Risk Score
2.06
Gender Split
44% female / 56% male
Age Distribution
<65: 121, 65-74: 110, 75-84: 55, 85+: 19

Top Prescribed Drugs (Medicare Part D)

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

What NDUDI ANIEMEKA, MD 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
1,088
Amlodipine Besylate
542
Metoprolol Succinate
406
Levothyroxine Sodium
366
Divalproex Sodium
259
Pantoprazole Sodium
238
Tamsulosin Hcl
218
Vascepa
Icosapent Ethyl
213
Metformin Hcl Er
Metformin Hcl
211
Metformin Hcl
206

* 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 NDUDI ANIEMEKA, MD 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

NDUDI ANIEMEKA, MD's 13,353 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 ANIEMEKA.

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

Frequently Asked Questions

What is NDUDI ANIEMEKA, MD's specialty?
NDUDI ANIEMEKA, MD specializes in Internal Medicine Physician and practices in CHICAGO, Illinois. Credentials: MD.
How much does NDUDI ANIEMEKA, MD prescribe under Medicare Part D?
In 2023, NDUDI ANIEMEKA, MD wrote 13,353 Medicare Part D claims totaling $2.4M in drug costs for 305 beneficiaries.
What is NDUDI ANIEMEKA, MD's Medicare quality score?
NDUDI ANIEMEKA, MD has a CMS MIPS Final Score of 96.6206/100 (Quality: 100, Cost: 55.402). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is NDUDI ANIEMEKA, MD located?
NDUDI ANIEMEKA, MD is located at 5219 W MADISON ST, CHICAGO, IL, 60644. Phone: (773) 378-4823.
What is NDUDI ANIEMEKA, MD's NPI number?
NDUDI ANIEMEKA, MD's National Provider Identifier (NPI) is 1255447421, issued on 08/21/2006.
Does NDUDI ANIEMEKA, MD prescribe more brand-name or generic drugs?
NDUDI ANIEMEKA, MD's prescribing is 20% brand-name and 80% generic drugs by claim count, with $2.1M in brand drug costs.
Does NDUDI ANIEMEKA, MD prescribe opioids?
Yes, NDUDI ANIEMEKA, MD had 352 opioid claims in 2023 with an opioid prescribing rate of 2.6%.
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 NDUDI ANIEMEKA, MD prescribe most often?
Based on 2023 Medicare Part D data, NDUDI ANIEMEKA, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NDUDI ANIEMEKA, MD accept Medicare?
NDUDI ANIEMEKA, MD appears in CMS Medicare data with 13,353 Part D claims and 305 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NDUDI ANIEMEKA, MD's credentials?
NDUDI ANIEMEKA, MD's NPI is 1255447421 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

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