Dr. William N. Onwuka, MD
- Part D claims, 2024
- 45
- Hospital affiliations
- 1
- Industry payments
- $303
- Medical group
- 1
- State license
- 1
- Practice address
- 30 Prospect Ave, Hackensack, NJ 07601
- Practice phone
- Call (551) 996-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Onwuka'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. William N. Onwuka is a plastic and reconstructive surgery physician in Hackensack, New Jersey
Dr. Onwuka practices at Hackensack University Medical Center in Hackensack, New Jersey, part of Hackensack Meridian Health.
Dr. Onwuka's NPI, 1437186590, was assigned on June 26, 2006. Dr. Onwuka graduated from Universidad de Guadalajara in 1988. Dr. Onwuka holds New Jersey license 25MA06631900.
- NPI
- 1437186590NPI Registry (opens in a new tab)
- NPI enumeration date
- June 26, 2006
- NPI status
- Active
- Practice phone
- (551) 996-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William N. Onwuka practices at Hackensack University Medical Center in Hackensack, New Jersey
Dr. Onwuka's primary practice is Hackensack University Medical Center, at 30 Prospect Ave, Hackensack, NJ 07601 in Bergen County. The practice phone is (551) 996-2000.
- Hackensack University Medical Center30 Prospect Ave, Hackensack, NJ 07601 · Bergen CountyPhone(551) 996-2000
Source: Dmand AI Affiliation Data
Dr. William N. Onwuka is affiliated with 3 sites of care and 1 medical group
Dr. Onwuka's primary practice is Hackensack University Medical Center in Hackensack, New Jersey, part of Hackensack Meridian Health. Dmand AI also links Dr. Onwuka to 1 physician office, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William N. Onwuka's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Onwuka practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hackensack University Medical Center | Available with a free account |
| +2 more sites and 1 medical group | 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 Hackensack Meridian Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William N. Onwuka is one of 90 plastics and reconstructive surgery physicians in New Jersey
Plastic and reconstructive surgery is Dr. Onwuka's primary specialty in the NPI Registry, under taxonomy code 2086S0122X. Dr. Onwuka is licensed in New Jersey.
Specialties and state licenses
- Plastic and reconstructive surgery, New JerseyPrimary
Plastics and reconstructive surgery physicians near Dr. Onwuka
Counts of plastics and reconstructive surgery physicians 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. William N. Onwuka's patients have a median age of 27
Across all payers, Dmand AI patient panel data puts Dr. Onwuka's median patient age at 27, with 50% women.
Dr. Onwuka's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 27
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. William N. Onwuka wrote 45 Medicare Part D claims in 2024
In 2024, Dr. Onwuka wrote 45 Medicare Part D claims. 51% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $13,977 in total drug cost.
Dr. Onwuka's Part D claims by kind of drug, 2024
- Generic23 claims51%
- Brand-name22 claims49%
Dr. Onwuka'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.
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
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Dr. William N. Onwuka received $303 in industry payments from 2016 to 2017
CMS Open Payments shows 2 general payments to Dr. Onwuka from 2 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $192.
General payments to Dr. Onwuka by program year, 2016 to 2017
Companies that paid Dr. Onwuka the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William N. Onwuka graduated from Universidad de Guadalajara
Dr. Onwuka graduated from Universidad de Guadalajara in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William N. Onwuka'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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. William N. Onwuka
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. William N. Onwuka's NPI number?
Dr. William N. Onwuka's NPI number is 1437186590. It was assigned on June 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William N. Onwuka?
Dr. William N. Onwuka is a plastic and reconstructive surgery physician in Hackensack, New Jersey. The primary specialty in the NPI Registry is Plastic and Reconstructive Surgery Physician (taxonomy code 2086S0122X).
Where does Dr. William N. Onwuka practice?
Dr. Onwuka practices at 30 Prospect Ave, Hackensack, NJ 07601. Dr. Onwuka's primary practice is Hackensack University Medical Center in Hackensack, New Jersey, part of Hackensack Meridian Health. Dmand AI also links Dr. Onwuka to 1 physician office, 1 group practice or clinic and 1 medical group.
What is Dr. William N. Onwuka's office phone number?
The practice phone on file for Dr. Onwuka is (551) 996-2000.
What is Dr. William N. Onwuka's medical license number?
Dr. Onwuka holds New Jersey license 25MA06631900.
Which hospitals is Dr. William N. Onwuka affiliated with?
Dr. Onwuka practices at Hackensack University Medical Center in Hackensack, New Jersey.
Where did Dr. William N. Onwuka go to medical school?
Dr. Onwuka graduated from Universidad de Guadalajara in 1988.
What drugs does Dr. William N. Onwuka prescribe most?
In 2024 Medicare Part D data, Dr. Onwuka's most prescribed drugs by claims were Mounjaro.
Has Dr. William N. Onwuka received payments from drug or device companies?
CMS Open Payments shows $303 in general payments to Dr. Onwuka from 2 companies from 2016 to 2017. The largest total came from Novo Nordisk Inc.
How long has Dr. William N. Onwuka been practicing?
Dr. Onwuka graduated from medical school in 1988, 38 years ago.
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