Samuel Chijioke Onyewu, MBCHB
- Medicare services, 2024
- 35
- Medicare patients, 2024
- 160
- Publications
- 3
- Hospital affiliations
- 4
- Industry payments
- $1,738
- Practice address
- 11116 Medical Campus Road, Hagerstown, MD 21742
- Practice phone
- Call (240) 313-9500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Samuel Onyewu'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.
Samuel Chijioke Onyewu is an anesthesiologist in Hagerstown, Maryland
Samuel Onyewu practices at Meritus Medical Center in Hagerstown, Maryland, part of Meritus Health.
Samuel Onyewu's NPI, 1770901514, was assigned on March 30, 2014. Samuel Onyewu holds Maryland license D0082177.
- NPI
- 1770901514NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608168422
- NPI enumeration date
- March 30, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (240) 313-9500
- 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)
Samuel Chijioke Onyewu practices at Meritus Medical Center in Hagerstown, Maryland
Samuel Onyewu's primary practice is Meritus Medical Center, at 11116 Medical Campus Road, Hagerstown, MD 21742 in Washington County. The practice phone is (240) 313-9500.
- Meritus Medical Center11116 Medical Campus Road, Hagerstown, MD 21742 · Washington CountyPhone(240) 313-9500
Source: Dmand AI Affiliation Data
Samuel Chijioke Onyewu is affiliated with 4 sites of care and 5 medical groups
Samuel Onyewu's primary practice is Meritus Medical Center in Hagerstown, Maryland, part of Meritus Health. Samuel Onyewu is also affiliated with University of Maryland Medical Center. The medical group on file is Meritus Radiology. Dmand AI also links Samuel Onyewu to 2 more hospitals and 4 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Samuel Chijioke Onyewu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Samuel Onyewu practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Meritus Medical Center | Available with a free account |
| +3 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Meritus Health and 6.2K+ hospitals, with verified contacts in the same login.
Samuel Chijioke Onyewu is one of 965 anesthesiologists in Maryland
Anesthesiology is Samuel Onyewu's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Samuel Onyewu's licenses on file in 3 states: Maryland, Connecticut and Virginia.
Specialties and state licenses
- Anesthesiology, MarylandPrimary
- Connecticut license
- Virginia license
Anesthesiologists near Samuel Onyewu
Counts of anesthesiologists 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
Samuel Chijioke Onyewu billed Medicare for 35 services in 2024
CMS data shows 35 Medicare services from Samuel Onyewu across 2 procedure codes in 2024, for 160 Medicare patients. Medicare paid $9,237 for them. Every service was in a facility, such as a hospital, rather than an office.
Samuel Onyewu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 612024: 3543%
- Surgery
- 2023: 312024: 0100%
Samuel Onyewu compared with the Maryland median for anesthesiologists, 2024
- Samuel Onyewu
- Maryland median
- Medicare services
- 35vs 10165% below
- Medicare patients
- 160vs 1769% below
Medians across 918 anesthesiologists in Maryland with Dmand AI profiles that report each measure.
Samuel Onyewu'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.
Need commercial claims for Samuel Onyewu?
Medicare shows one payer. Book a meeting to get commercial claims data for Samuel Onyewu and other anesthesiologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Samuel Chijioke Onyewu treated 160 Medicare patients in 2024, average age 69
CMS counts 160 Medicare patients who saw Samuel Onyewu in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 28% are also on Medicaid. Their average risk score is 2.39, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Samuel Onyewu's median patient age at 60, with 57% women.
Samuel Onyewu's Medicare patients by age, 2024
Samuel Onyewu's Medicare patients by sex, 2024
- Women9157%
- Men6943%
Chronic conditions among Samuel Onyewu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Mood disorders46%
- Depression41%
- Ischemic heart disease40%
- Anxiety39%
- Diabetes39%
Share of Medicare patients with each condition. A patient can have several.
Samuel Onyewu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women57%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Samuel Chijioke Onyewu takes part in Medicare
Samuel Onyewu 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Samuel Chijioke Onyewu has 3 publications on record
Dmand AI links 3 papers to Samuel Onyewu, published from 2016 to 2024. Samuel Onyewu's most frequent co-authors are Emily Anne Smith Bergbower, MD, PhD, Clive O. Callender, MD and Navin R. Changoor.
Samuel Onyewu's most frequent co-authors
- Emily Anne Smith Bergbower, MD, PhD1 shared paper
- Clive O. Callender, MD1 shared paper
- Navin R. Changoor1 shared paper
Recent publications by Samuel Onyewu
See who Samuel Onyewu researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Samuel Onyewu works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Samuel Chijioke Onyewu received $1,738 in industry payments from 2016 to 2025
CMS Open Payments shows 13 general payments to Samuel Onyewu from 6 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 64% of the total. Becton, Dickinson and Company paid the most, $1,016.
General payments to Samuel Onyewu by program year, 2016 to 2025
General payments to Samuel Onyewu by kind, 2016 to 2025
- Travel and lodging$1,10764%
- Food and beverage$63136%
Companies that paid Samuel Onyewu the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Samuel Chijioke Onyewu'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) |
| 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) |
| 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 Samuel Chijioke Onyewu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Samuel Chijioke Onyewu's NPI number?
Samuel Chijioke Onyewu's NPI number is 1770901514. It was assigned on March 30, 2014, and it is active in the NPI Registry.
What does Samuel Chijioke Onyewu specialize in?
Samuel Chijioke Onyewu is an anesthesiologist in Hagerstown, Maryland. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Samuel Chijioke Onyewu practice?
Samuel Onyewu practices at 11116 Medical Campus Road, Hagerstown, MD 21742. Samuel Onyewu's primary practice is Meritus Medical Center in Hagerstown, Maryland, part of Meritus Health. Dmand AI also links Samuel Onyewu to 2 hospitals and 4 medical groups.
What is Samuel Chijioke Onyewu's office phone number?
The practice phone on file for Samuel Onyewu is (240) 313-9500.
What is Samuel Chijioke Onyewu's medical license number?
Samuel Onyewu holds Maryland license D0082177, one of the licenses on file in 3 states.
Which states has Samuel Chijioke Onyewu been licensed in?
Dmand AI has state licenses on file for Samuel Onyewu in Maryland, Connecticut and Virginia.
Which hospitals is Samuel Chijioke Onyewu affiliated with?
Samuel Onyewu practices at Meritus Medical Center in Hagerstown, Maryland. Samuel Onyewu is also affiliated with University of Maryland Medical Center. Dmand AI links Samuel Onyewu to 2 more hospitals.
What medical group is Samuel Chijioke Onyewu part of?
Samuel Onyewu is linked to Meritus Radiology. Dmand AI links Samuel Onyewu to 4 more medical groups.
Does Samuel Chijioke Onyewu accept Medicare?
Yes. CMS data shows Samuel Onyewu billed Medicare for 35 services in 2024, and Samuel Onyewu accepts Medicare assignment.
How many Medicare patients does Samuel Chijioke Onyewu see?
CMS counts 160 Medicare patients who saw Samuel Onyewu in 2024, with an average age of 69.
Show 5 more questionsShow fewer questions
What services does Samuel Chijioke Onyewu bill to Medicare?
In 2024, Samuel Onyewu's most billed Medicare services were anesthesia (00731) and anesthesia (00670).
Has Samuel Chijioke Onyewu received payments from drug or device companies?
CMS Open Payments shows $1,738 in general payments to Samuel Onyewu from 6 companies from 2016 to 2025. The largest total came from Becton, Dickinson and Company.
How long has Samuel Chijioke Onyewu been practicing?
Samuel Onyewu graduated from medical school in 2009, 17 years ago.
Does Samuel Chijioke Onyewu do research?
Dmand AI links 3 publications to Samuel Onyewu, published from 2016 to 2024.
Who does Samuel Chijioke Onyewu publish with?
Samuel Onyewu's most frequent co-authors are Emily Anne Smith Bergbower, MD, PhD (1 shared paper), Clive O. Callender, MD (1 shared paper) and Navin R. Changoor (1 shared paper).
Selling to anesthesiology practices?
See anesthesiologists in Maryland by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card