Dr. Ikenna Onyenemezu, MD
- Medicare services, 2024
- 1,369
- Medicare patients, 2024
- 485
- Part D claims, 2024
- 327
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 2001 Medical Parkway, Annapolis, MD 21401
- Practice phone
- Call (443) 481-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Onyenemezu's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ikenna Onyenemezu is a hospitalist in Annapolis, Maryland
Dr. Onyenemezu practices at Luminis Health Anne Arundel Medical Center in Annapolis, Maryland, part of Luminis Health.
Dr. Onyenemezu's NPI, 1497980023, was assigned on May 27, 2009. Dr. Onyenemezu graduated from George Washington University School of Medicine in 2009. Dr. Onyenemezu holds Maryland license D73676.
- NPI
- 1497980023NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254595028
- NPI enumeration date
- May 27, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (443) 481-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ikenna Onyenemezu practices at Luminis Health Anne Arundel Medical Center in Annapolis, Maryland
Dr. Onyenemezu's primary practice is Luminis Health Anne Arundel Medical Center, at 2001 Medical Parkway, Annapolis, MD 21401 in Anne Arundel County. The practice phone is (443) 481-1000.
- Luminis Health Anne Arundel Medical Center2001 Medical Parkway, Annapolis, MD 21401 · Anne Arundel CountyPhone(443) 481-1000
Source: Dmand AI Affiliation Data
Dr. Ikenna Onyenemezu is affiliated with 1 site of care and 1 medical group
Dr. Onyenemezu's primary practice is Luminis Health Anne Arundel Medical Center in Annapolis, Maryland, part of Luminis Health. The medical group on file is Luminis Health Maternal and Fetal Medicine Annapolis.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ikenna Onyenemezu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Onyenemezu practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Luminis Health Anne Arundel Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ikenna Onyenemezu is one of 415 hospitalists in Maryland
Hospitalist is Dr. Onyenemezu's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Onyenemezu is licensed in Maryland.
Specialties and state licenses
- Hospitalist, MarylandPrimary
Hospitalists near Dr. Onyenemezu
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ikenna Onyenemezu billed Medicare for 1,369 services in 2024
CMS data shows 1,369 Medicare services from Dr. Onyenemezu across 5 procedure codes in 2024, for 485 Medicare patients. Medicare paid $120,517 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Onyenemezu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0692024: 1,31623%
- Other services
- 2023: 272024: 5396%
Dr. Onyenemezu compared with the Maryland median for hospitalists, 2024
- Dr. Onyenemezu
- Maryland median
- Medicare services
- 1,369vs 6502.1 times
- Medicare patients
- 485vs 29167% above
- Part D claims
- 115vs 562.1 times
Medians across 388 hospitalists in Maryland with Dmand AI profiles that report each measure.
Dr. Onyenemezu's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Onyenemezu and other hospitalists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ikenna Onyenemezu treated 485 Medicare patients in 2024, average age 78
CMS counts 485 Medicare patients who saw Dr. Onyenemezu in 2024. The largest group is 75 to 84, with 189 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 2.42, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Onyenemezu's median patient age at 81, with 54% women.
Dr. Onyenemezu's Medicare patients by age, 2024
Dr. Onyenemezu's Medicare patients by sex, 2024
- Women27356%
- Men21244%
Chronic conditions among Dr. Onyenemezu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis67%
- Ischemic heart disease57%
- Heart failure55%
- Chronic kidney disease53%
- Atrial fibrillation49%
- Diabetes48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Onyenemezu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 81
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ikenna Onyenemezu wrote 327 Medicare Part D claims in 2024
In 2024, Dr. Onyenemezu wrote 327 Medicare Part D claims for 141 patients. 84% of them were for generic drugs. CMS names the drug for 115 of them, across 7 drugs with 11 or more claims each, at $9,042 in total drug cost. In 2023, CMS named 110 claims across 7 drugs.
Dr. Onyenemezu's Part D claims by kind of drug, 2024
- Generic276 claims84%
- Brand-name and other51 claims16%
Dr. Onyenemezu's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Onyenemezu's Part D claims, 2024
- Antibiotics17%57 of 327 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1102024: 1155%
Drugs named by CMS: 7 in 2024, 7 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Ikenna Onyenemezu takes part in Medicare
Dr. Onyenemezu accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ikenna Onyenemezu has 1 publication on record
Dmand AI links 1 paper to Dr. Onyenemezu in 2014.
Recent publications by Dr. Onyenemezu
See who Dr. Onyenemezu researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Onyenemezu works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ikenna Onyenemezu received $96 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Onyenemezu from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Portola Pharmaceuticals, LLC paid the most, $96.
Companies that paid Dr. Onyenemezu the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ikenna Onyenemezu graduated from George Washington University School of Medicine
Dr. Onyenemezu graduated from George Washington University School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ikenna Onyenemezu's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ikenna Onyenemezu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ikenna Onyenemezu's NPI number?
Dr. Ikenna Onyenemezu's NPI number is 1497980023. It was assigned on May 27, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Ikenna Onyenemezu?
Dr. Ikenna Onyenemezu is a hospitalist in Annapolis, Maryland. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Ikenna Onyenemezu practice?
Dr. Onyenemezu practices at 2001 Medical Parkway, Annapolis, MD 21401. Dr. Onyenemezu's primary practice is Luminis Health Anne Arundel Medical Center in Annapolis, Maryland, part of Luminis Health.
What is Dr. Ikenna Onyenemezu's office phone number?
The practice phone on file for Dr. Onyenemezu is (443) 481-1000.
What is Dr. Ikenna Onyenemezu's medical license number?
Dr. Onyenemezu holds Maryland license D73676.
Which hospitals is Dr. Ikenna Onyenemezu affiliated with?
Dr. Onyenemezu practices at Luminis Health Anne Arundel Medical Center in Annapolis, Maryland.
What medical group is Dr. Ikenna Onyenemezu part of?
Dr. Onyenemezu is linked to Luminis Health Maternal and Fetal Medicine Annapolis.
Does Dr. Ikenna Onyenemezu accept Medicare?
Yes. CMS data shows Dr. Onyenemezu billed Medicare for 1,369 services in 2024, and Dr. Onyenemezu accepts Medicare assignment.
How many Medicare patients does Dr. Ikenna Onyenemezu see?
CMS counts 485 Medicare patients who saw Dr. Onyenemezu in 2024, with an average age of 78.
What services does Dr. Ikenna Onyenemezu bill to Medicare?
In 2024, Dr. Onyenemezu's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
Show 5 more questionsShow fewer questions
Where did Dr. Ikenna Onyenemezu go to medical school?
Dr. Onyenemezu graduated from George Washington University School of Medicine in 2009.
What drugs does Dr. Ikenna Onyenemezu prescribe most?
In 2024 Medicare Part D data, Dr. Onyenemezu's most prescribed drugs by claims were Furosemide, Amoxicillin-Clavulanate Potass and Metoprolol Tartrate.
Has Dr. Ikenna Onyenemezu received payments from drug or device companies?
CMS Open Payments shows $96 in general payments to Dr. Onyenemezu from 1 company from 2018 to 2018. The largest total came from Portola Pharmaceuticals, LLC.
How long has Dr. Ikenna Onyenemezu been practicing?
Dr. Onyenemezu graduated from medical school in 2009, 17 years ago.
Does Dr. Ikenna Onyenemezu do research?
Dmand AI links 1 publication to Dr. Onyenemezu.
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