Chike Gregory Onwuka, M.D.
Internal Medicine Physician · Clinton, MD
Chike Gregory Onwuka, M.D. is an internal medicine physician with a practice address in Clinton, Maryland, and NPI 1013065267, issued on Jan 6, 2007. Check the license (Maryland D0064986, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Chike Gregory Onwuka
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0064986 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9135 Piscataway Road, Clinton, MD 20735
- Phone
- (301) 868-2555
- Enumerated
- Jan 6, 2007
- Record last updated
- Oct 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (301) 868-2933
- Medicaid ID
- 7600 MD
- Medicare enrollment
- Enrolled (PECOS I20090306000211); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 9135 Piscataway Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jacqueline Rogers, LCPCProfessional Counselor1558790360
Verify Chike Gregory Onwuka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0064986Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.5 times the Medicare Part D claims of the average internal medicine physician in 2024
14,388 Medicare Part D claims for 1,020 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 64 claims were for opioids.
Most prescribed
- Amlodipine Besylate1,141 claims
- Atorvastatin Calcium838 claims
- Rosuvastatin Calcium554 claims
- Metoprolol Succinate367 claims
- Eliquis324 claims
- Gabapentin302 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 63.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $265.63
14 payments; by number, the most common kind was food and beverage; the largest payer was Scilex Pharmaceuticals Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- G Medicine LLCClinton, MD
- Suburban/nrh Medical Rehabilitation IncBethesda, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chike Gregory Onwuka among 3,904 internal medicine physician records in Maryland
Chike Gregory Onwuka, M.D. is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 44% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1994 · median 2003 among the 2,445 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 internal medicine physician records list a practice address in Clinton
They are 26 of the 832 NPPES records with a practice address in Clinton, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Clinton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rasheed Abassi, M.D.Clinton, MD 207351376608620
- Joseph Avery,iii, M.D.Clinton, MD 207351841301769
- Herman Daniels, MDClinton, MD 207351235450099
- Kevin Ford, MDClinton, MD 207351275608184
- Keyteshia Guy, M.D.Clinton, MD 207351992964316
- Patrick Haugh, M.D.Clinton, MD 207351235122680
- Victor HerryClinton, MD 207351073642625
- Ifeoma Izuchukwu, M.D, MPH, FACPClinton, MD 207351811992738
Common questions
What is Chike Gregory Onwuka, M.D.'s NPI number?
Chike Gregory Onwuka, M.D.'s National Provider Identifier (NPI) is 1013065267, issued on Jan 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Chike Gregory Onwuka, M.D. located?
The NPPES record lists a practice address at 9135 Piscataway Road, Clinton, MD, 20735. Phone: (301) 868-2555. Providers update this record themselves, so call before visiting.
How can I verify Chike Gregory Onwuka, M.D.'s license?
NPPES lists Maryland license number D0064986, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Chike Gregory Onwuka, M.D. prescribe under Medicare Part D?
In 2024, Chike Gregory Onwuka, M.D. had 14,388 Medicare Part D claims for 1,020 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Chike Gregory Onwuka, M.D.'s MIPS final score?
The 2023 MIPS final score is 63.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.