2026 NPPES data Pain Medicine (Anesthesiology) Physician NPI 1225090533 M.D.
Verify on CMS →

ANWULI OKOLI, M.D.

Pain Medicine (Anesthesiology) Physician in OAK LAWN, 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
954
Medicare Part D claims · 350 beneficiaries · Pain Medicine (Anesthesiology) Physician avg: 2K
Industry payments
$286.77
6 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ANWULI OKOLI, M.D. filed 954 Medicare Part D claims in 2023 as a Pain Medicine (Anesthesiology) Physician in OAK LAWN, Illinois.

954
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.

ANWULI OKOLI, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

954 Top 25% higher than 75% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

ANWULI OKOLI, M.D. 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 ANWULI OKOLI, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/03/2006

NPI 1225090533

Primary specialty

Pain Medicine (Anesthesiology) Physician

Niche

4,020 US NPIs in this specialty

Medicare Part D claims

954 42% vs specialty avg

2023 prescription claims

Specialty avg: 1,657

Specialty distribution in Illinois

How Pain Medicine (Anesthesiology) Physician compares to other specialties among Illinois providers

Illinois providers

Pain Medicine (Anesthesiology) Physician share within Illinois

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

Specialty board-certification context

Estimated specialty board-certified rate — Pain Medicine (Anesthesiology) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Pain Medicine (Anesthesiology) Physician ABMS/AOA estimate

Est. board-certified rate (Pain Medicine (Anesthesiology) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pain Medicine (Anesthesiology) Physician) — ABMS / AOA estimate

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).

ANWULI OKOLI, M.D. appears in the CMS NPPES registry as a Pain Medicine (Anesthesiology) Physician provider holding M.D. credentials at 4440 W 95TH ST FL 7, OAK LAWN, IL, 60453, with a listed phone of (708) 684-4584. NPI 1225090533 was issued on 04/03/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what OKOLI 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 954 prescription claims written by this provider, covering 350 Medicare beneficiaries and totaling roughly $37K in drug spend, with an opioid prescribing rate of 54.8%. 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.

Pain Medicine (Anesthesiology) Physician is a narrow specialty nationwide, with 4,020 enrolled providers across 53 states and an average of 1,657 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

4440 W 95TH ST FL 7
OAK LAWN, IL 60453

Provider Details

NPI 1225090533
Specialty Pain Medicine (Anesthesiology) Physician
Credentials M.D.
Gender Female
NPI Issued 04/03/2006

Hospital and facility affiliations

Facilities where ANWULI OKOLI, 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.

ADVOCATE HEALTH AND HOSPITALS CORPORATION
BUFFALO GROVE, 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 ANWULI OKOLI, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$287

Largest payer

SI-BONE, 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 ANWULI OKOLI, M.D.. To verify ANWULI OKOLI, 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.

954
Total Claims
$37K
Total Drug Cost
350
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
994
Total Day Supply
27,669
Generic Drug Cost
$33K
Opioid Claims
523 (54.8% rate)

Patient Demographics

Average Patient Age
66.8 years
Avg HCC Risk Score
1.75
Gender Split
63% female / 37% male
Age Distribution
<65: 135, 65-74: 142, 75-84: 48, 85+: 25

Top Prescribed Drugs (Medicare Part D)

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

What ANWULI OKOLI, 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
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
260
Gabapentin
103
Tramadol Hcl
100
Pregabalin
84
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
69
Tizanidine Hcl
67
Cyclobenzaprine Hcl
37
Baclofen
36
Oxycodone Hcl
29
Diclofenac Sodium
21

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

Pain Medicine (Anesthesiology) Physician Overview

How ANWULI OKOLI, M.D. fits within the Pain Medicine (Anesthesiology) Physician landscape nationally.

4,020
Pain Medicine (Anesthesiology) Physician Providers in US
53
States with Pain Medicine (Anesthesiology) Physician
1,657
Avg Claims per Provider

ANWULI OKOLI, M.D.'s 954 claims are below the specialty average of 1,657.

Nearby Pain Medicine (Anesthesiology) Physician Providers in Illinois

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

Compare Pain Medicine (Anesthesiology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ANWULI OKOLI, M.D.'s specialty?
ANWULI OKOLI, M.D. specializes in Pain Medicine (Anesthesiology) Physician and practices in OAK LAWN, Illinois. Credentials: M.D..
How much does ANWULI OKOLI, M.D. prescribe under Medicare Part D?
In 2023, ANWULI OKOLI, M.D. wrote 954 Medicare Part D claims totaling $37K in drug costs for 350 beneficiaries.
Where is ANWULI OKOLI, M.D. located?
ANWULI OKOLI, M.D. is located at 4440 W 95TH ST FL 7, OAK LAWN, IL, 60453. Phone: (708) 684-4584.
What is ANWULI OKOLI, M.D.'s NPI number?
ANWULI OKOLI, M.D.'s National Provider Identifier (NPI) is 1225090533, issued on 04/03/2006.
Does ANWULI OKOLI, M.D. prescribe opioids?
Yes, ANWULI OKOLI, M.D. had 523 opioid claims in 2023 with an opioid prescribing rate of 54.8%.
How many Pain Medicine (Anesthesiology) Physician providers are there in the US?
There are 4,020 Pain Medicine (Anesthesiology) Physician providers across 53 states in the US. The average Pain Medicine (Anesthesiology) Physician provider writes 1,657 Medicare Part D claims per year.
What drugs does ANWULI OKOLI, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ANWULI OKOLI, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Tramadol Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANWULI OKOLI, M.D. accept Medicare?
ANWULI OKOLI, M.D. appears in CMS Medicare data with 954 Part D claims and 350 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANWULI OKOLI, M.D.'s credentials?
ANWULI OKOLI, M.D.'s NPI is 1225090533 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.
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