Dr. Chike Gregory Onwuka, MD
- Medicare services, 2024
- 4,900
- Medicare patients, 2024
- 1,073
- Part D claims, 2024
- 14,388
- MIPS score, 2024
- 53
- Hospital affiliations
- 2
- Practice address
- 9135 Piscataway Rd, Clinton, MD 20735
- Practice phone
- Call (301) 868-2555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
G Medicine
Clinton, Maryland
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. Chike Gregory Onwuka is an internist in Clinton, Maryland
Dr. Onwuka practices at G Medicine in Clinton, Maryland.
Dr. Onwuka's NPI, 1013065267, was assigned on January 6, 2007. Dr. Onwuka holds Maryland license D0064986.
- NPI
- 1013065267NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9436252848
- NPI enumeration date
- January 6, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (301) 868-2555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chike Gregory Onwuka practices at G Medicine in Clinton, Maryland
Dr. Onwuka's primary practice is G Medicine, at 9135 Piscataway Rd, Clinton, MD 20735 in Prince Georges County. The practice phone is (301) 868-2555.
- G Medicine9135 Piscataway Rd, Clinton, MD 20735 · Prince Georges CountyPhone(301) 868-2555
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Chike Gregory Onwuka is affiliated with 10 sites of care and 1 medical group
Dr. Onwuka's primary practice is G Medicine in Clinton, Maryland. Dr. Onwuka is also affiliated with MedStar Southern Maryland Hospital Center. The medical group on file is Clinton Primary Care. Dmand AI also links Dr. Onwuka to 1 more hospital, 5 home health agencies, 1 group practice or clinic and 1 hospice, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Chike Gregory Onwuka's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Onwuka practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| G Medicine | Available with a free account |
| +9 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chike Gregory Onwuka is one of 3,320 internists in Maryland
Internal medicine is Dr. Onwuka's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Onwuka is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
Internists near Dr. Onwuka
Counts of internists 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. Chike Gregory Onwuka billed Medicare for 4,900 services in 2024
CMS data shows 4,900 Medicare services from Dr. Onwuka across 21 procedure codes in 2024, for 1,073 Medicare patients. Medicare paid $342,119 for them. Every service was in an office.
Dr. Onwuka's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3,7372024: 3,7601%
- Other services
- 2023: 7022024: 699No change
- Tests and treatments
- 2023: 3992024: 4021%
- Drugs given in the office
- 2023: 212024: 2519%
- Surgery
- 2023: 192024: 1426%
Dr. Onwuka compared with the Maryland median for internists, 2024
- Dr. Onwuka
- Maryland median
- Medicare services
- 4,900vs 6567.5 times
- Medicare patients
- 1,073vs 2514.3 times
- Part D claims
- 13,516vs 30943.7 times
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Onwuka'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. Onwuka and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chike Gregory Onwuka treated 1,073 Medicare patients in 2024, average age 74
CMS counts 1,073 Medicare patients who saw Dr. Onwuka in 2024. The largest group is 65 to 74, with 450 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.60, 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. Onwuka's median patient age at 61, with 57% women.
Dr. Onwuka's Medicare patients by age, 2024
Dr. Onwuka's Medicare patients by sex, 2024
- Women65661%
- Men41739%
Chronic conditions among Dr. Onwuka's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Diabetes49%
- Chronic kidney disease47%
- Ischemic heart disease26%
- Cancer19%
- Heart failure19%
Share of Medicare patients with each condition. A patient can have several.
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 61
Patient panel by sex, all payers
- Women57%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chike Gregory Onwuka wrote 14,388 Medicare Part D claims in 2024
In 2024, Dr. Onwuka wrote 14,388 Medicare Part D claims for 1,020 patients. 85% of them were for generic drugs. CMS names the drug for 13,516 of them, across 180 drugs with 11 or more claims each, at $2,179,391 in total drug cost. In 2023, CMS named 10,728 claims across 166 drugs.
Dr. Onwuka's Part D claims by kind of drug, 2024
- Generic12,240 claims85%
- Brand-name2,053 claims14%
- Other95 claims1%
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.
Drug classes CMS tracks in Dr. Onwuka's Part D claims, 2024
- Opioids0%64 of 14,388 claims
- Antibiotics3%385 of 14,388 claims
- Antipsychotics, patients 65 and over0%55 of 14,388 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: 10,7282024: 13,51626%
Drugs named by CMS: 180 in 2024, 166 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
Dr. Chike Gregory Onwuka scored 53 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 53 out of 100 for Dr. Onwuka for performance year 2024, reported individually. Dr. Onwuka accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Onwuka as offering telehealth. CMS counts 132 procedures of removal of tissue by Dr. Onwuka, more than 88% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Onwuka's MIPS scores, performance year 2024
- 53of 100Final score
- 63.3of 100Quality
- 0of 100Improvement Activities
- 81of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Onwuka ranks in Medicare procedure volume
- Removal of tissue
- 88th percentile132 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Chike Gregory Onwuka received $8,900 in industry payments from 2016 to 2025
CMS Open Payments shows 499 general payments to Dr. Onwuka from 48 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. AstraZeneca Pharmaceuticals LP paid the most, $1,516.
General payments to Dr. Onwuka by program year, 2016 to 2025
General payments to Dr. Onwuka by kind, 2016 to 2025
- Food and beverage$8,53396%
- Education$3674%
Companies that paid Dr. Onwuka 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 Dr. Chike Gregory Onwuka's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Chike Gregory 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. Chike Gregory Onwuka's NPI number?
Dr. Chike Gregory Onwuka's NPI number is 1013065267. It was assigned on January 6, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Chike Gregory Onwuka?
Dr. Chike Gregory Onwuka is an internist in Clinton, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Chike Gregory Onwuka practice?
Dr. Onwuka practices at 9135 Piscataway Rd, Clinton, MD 20735. Dr. Onwuka's primary practice is G Medicine in Clinton, Maryland. Dmand AI also links Dr. Onwuka to 1 hospital, 5 home health agencies, 1 group practice or clinic and 1 hospice.
What is Dr. Chike Gregory Onwuka's office phone number?
The practice phone on file for Dr. Onwuka is (301) 868-2555.
What is Dr. Chike Gregory Onwuka's medical license number?
Dr. Onwuka holds Maryland license D0064986.
Which hospitals is Dr. Chike Gregory Onwuka affiliated with?
Dr. Onwuka is affiliated with MedStar Southern Maryland Hospital Center. Dmand AI links Dr. Onwuka to 1 more hospital.
What medical group is Dr. Chike Gregory Onwuka part of?
Dr. Onwuka is linked to Clinton Primary Care.
Does Dr. Chike Gregory Onwuka accept Medicare?
Yes. CMS data shows Dr. Onwuka billed Medicare for 4,900 services in 2024, and Dr. Onwuka accepts Medicare assignment.
Does Dr. Chike Gregory Onwuka offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Onwuka as offering telehealth services.
What is Dr. Chike Gregory Onwuka's MIPS score?
Dr. Onwuka's MIPS final score for performance year 2024 is 53 out of 100, reported individually.
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How many Medicare patients does Dr. Chike Gregory Onwuka see?
CMS counts 1,073 Medicare patients who saw Dr. Onwuka in 2024, with an average age of 74.
What services does Dr. Chike Gregory Onwuka bill to Medicare?
In 2024, Dr. Onwuka's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
What drugs does Dr. Chike Gregory Onwuka prescribe most?
In 2024 Medicare Part D data, Dr. Onwuka's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Rosuvastatin Calcium.
Has Dr. Chike Gregory Onwuka received payments from drug or device companies?
CMS Open Payments shows $8,900 in general payments to Dr. Onwuka from 48 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Chike Gregory Onwuka been practicing?
Dr. Onwuka graduated from medical school in 1994, 32 years ago.
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