2026 NPPES data Internal Medicine Physician NPI 1629026018 MD
Verify on CMS →

Chuba Ononye, MD

Internal Medicine Physician in Mesa, Arizona. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 172,858 in 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
4K
Medicare Part D claims · 231 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
89%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$21.4
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Chuba Ononye, MD filed 3,625 Medicare Part D claims in 2023 as a Internal Medicine Physician in Mesa, Arizona, prescribing 89% generic.

4K
Part D claims, 2023
89%
generic prescribing
$21.4
industry payments (Sunshine Act)

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.

Chuba Ononye, MD's Medicare Part D volume vs every U.S. prescriber

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

3,625 Top 9% higher than 91% 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%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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-eligible specialty (heuristic — not verified)

Chuba Ononye, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Chuba Ononye, MD?

Quality data not reported

NPI registry status

Active

Issued 05/05/2006

NPI 1629026018

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

3,625 33% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Arizona

How Internal Medicine Physician compares to other specialties among Arizona providers

Arizona providers

Largest specialties in Arizona (% of in-state providers)

Pharmacist — 5.6%Pharmacist5.6%Behavior Technician — 5.6%Behavior Technician5.6%Family Nurse Practitioner — 4.3%Family Nurse Practitioner4.3%Physical Therapist — 4.2%Physical Therapist4.2%Speech-Language Pathologist — 3.5%Speech-Language Pathologist3.5%Student in an Organized Health Care Education/Training Program — 3.5%Student in an Organized Health Care Education/Training Program3.5%Internal Medicine Physician — 2.7%Internal Medicine Physician2.7%
Largest specialties in Arizona (% of in-state providers)

Specialty board-certification context

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

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

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

0%100%78%
Est. board-certified rate (Internal Medicine 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).

Chuba Ononye, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 1917 SOUTH CRISMON ROAD, Mesa, AZ, 85209, with a listed phone of (480) 610-7100. NPI 1629026018 was issued on 05/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Ononye 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 3,625 prescription claims written by this provider, covering 231 Medicare beneficiaries and totaling roughly $356K in drug spend, split 10% brand-name and 89% generic by claim count, with an opioid prescribing rate of 3.1%. 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.

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

1917 SOUTH CRISMON ROAD
Mesa, AZ 85209

Provider Details

NPI 1629026018
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 05/05/2006

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 Chuba Ononye, MD. Source: openpaymentsdata.cms.gov.

Total received

$21

Largest payer

Almatica Pharma LLC

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.

Brand vs generic prescribing mix · Typical

Chuba Ononye, MD — brand share 10.0%
Internal Medicine Physician average

10% brand-name claims vs 89% generic, on 3,625 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.

3,625
Total Claims
$356K
Total Drug Cost
231
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,095
Total Day Supply
236,248
Brand vs Generic
10% brand / 89% generic
Brand Drug Cost
$290K
Generic Drug Cost
$64K
Opioid Claims
114 (3.1% rate)
Antibiotic Claims
126

Patient Demographics

Average Patient Age
74.3 years
Avg HCC Risk Score
1.53
Gender Split
58% female / 42% male
Age Distribution
<65: 26, 65-74: 87, 75-84: 86, 85+: 32

Top Prescribed Drugs (Medicare Part D)

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

What Chuba Ononye, 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
Amlodipine Besylate
207
Lisinopril
187
Simvastatin
125
Levothyroxine Sodium
123
Metformin Hcl
120
Alprazolam
102
Atorvastatin Calcium
84
Hydrochlorothiazide
84
Losartan Potassium
82
Gabapentin
76

* 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 Chuba Ononye, 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

Chuba Ononye, MD's 3,625 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Arizona

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

Compare 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 Arizona medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby 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.

Frequently Asked Questions

What is Chuba Ononye, MD's specialty?
Chuba Ononye, MD specializes in Internal Medicine Physician and practices in Mesa, Arizona. Credentials: MD.
How much does Chuba Ononye, MD prescribe under Medicare Part D?
In 2023, Chuba Ononye, MD wrote 3,625 Medicare Part D claims totaling $356K in drug costs for 231 beneficiaries.
Where is Chuba Ononye, MD located?
Chuba Ononye, MD is located at 1917 SOUTH CRISMON ROAD, Mesa, AZ, 85209. Phone: (480) 610-7100.
What is Chuba Ononye, MD's NPI number?
Chuba Ononye, MD's National Provider Identifier (NPI) is 1629026018, issued on 05/05/2006.
Does Chuba Ononye, MD prescribe more brand-name or generic drugs?
Chuba Ononye, MD's prescribing is 10% brand-name and 89% generic drugs by claim count, with $290K in brand drug costs.
Does Chuba Ononye, MD prescribe opioids?
Yes, Chuba Ononye, MD had 114 opioid claims in 2023 with an opioid prescribing rate of 3.1%.
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 Chuba Ononye, MD prescribe most often?
Based on 2023 Medicare Part D data, Chuba Ononye, MD's most frequently prescribed drugs include Amlodipine Besylate, Lisinopril, Simvastatin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Chuba Ononye, MD accept Medicare?
Chuba Ononye, MD appears in CMS Medicare data with 3,625 Part D claims and 231 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Chuba Ononye, MD's credentials?
Chuba Ononye, MD's NPI is 1629026018 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.
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.