DR. CHIKE GREGORY ONWUKA M.D.
NPI 1013065267
Internal Medicine in Clinton, MD

Q: What is Chike Onwuka's NPI number?

The NPI number for Chike Onwuka is 1013065267. It was assigned to this individual provider in the NPPES registry on January 6, 2007.

Q: What is Chike Onwuka's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Chike Onwuka was last updated on October 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 06, 2007PECOS EnrolledAccepts Medicare Assignment

63.75/100

CMS Quality Rating

9135 PISCATAWAY ROAD, SUITE 420, CLINTON, MD 20735(301) 868-2555(301) 868-2933 Get Directions Write a Review

NPPES record last updated: October 4, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. Chike Gregory Onwuka M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHIKE GREGORY ONWUKA M.D. (NPI 1013065267) is an individual internal medicine provider in Clinton, Maryland, licensed in Maryland (D0064986) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Medstar Southern Maryland Hospital Center, and is a graduate of Other (1994).

NPPES Registry Identity

NPI1013065267

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. CHIKE GREGORY ONWUKACredential: M.D.

Location Address9135 PISCATAWAY ROAD, SUITE 420Clinton, MD 20735

Mailing Address9135 Piscataway Road, Suite 420Clinton, MD 20735 · (301) 868-2555 · Fax (301) 868-2933

Phone(301) 868-2555

Fax(301) 868-2933

Sole ProprietorYes

Medical School CMSOtherGraduated 1994

Enumeration DateJanuary 6, 2007

Last NPPES UpdateOctober 4, 2021

NPPES CertifiedOctober 4, 2021

✔ NPI 1013065267 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in MD · D0064986

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

9135 PISCATAWAY ROAD, Clinton, MD 20735

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Other Identifiers 2

OtherP00856604DC · Railroad Medicare

Medicaid7600MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Chike Gregory Onwuka M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9436252848

PECOS Enrollment IDI20070305000586, I20090306000211

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Chike Onwuka reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

G Medicine LLC

Same address

Internal Medicine

9135 PISCATAWAY RD STE 420
Clinton, MD 20735

Reassigned Medicare billing, District of Columbia enrollment
7 clinicians in this Medicare group

NPI 1376790428 (301) 868-2555

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 20

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

1,874 services838 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

1,594 services808 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

529 services529 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

148 services148 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

122 services115 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

113 services113 patients

Transitional care management services for problem of high complexity 99496

Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.

92 services82 patients

Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes 99348

An established patient home visit is a 25-minute appointment where a healthcare provider visits you at your home. This service is for patients who have previously been seen by the provider. It includes a check-up and discussion about your health concerns.

67 services30 patients

Infusion into a vein for hydration, 31-60 minutes 96360

This is a procedure where a sterile solution is administered into your vein to help restore body fluid balance. It typically lasts between 31-60 minutes. It's a safe, common treatment for dehydration or to deliver medication.

50 services37 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

47 services47 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

39 services16 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

36 services36 patients

Inhalation treatment for airway obstruction or sputum production 94640

Inhalation treatment, also known as nebulizer therapy, helps clear airway obstructions and reduce sputum production. It involves breathing in medication through a device, turning it into a mist. This can open up the airways, making breathing easier and helping to cough out mucus.

27 services21 patients

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg J3420

This is a procedure where a small dose of Vitamin B-12, also known as Cyanocobalamin, is injected into your body. This vitamin is essential for nerve function and the production of red blood cells. It's often used to treat vitamin B-12 deficiency.

25 services16 patients

Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402

An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.

22 services22 patients

Transitional care management services for problem of at least moderate complexity 99495

Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.

21 services19 patients

Removal of tissue from wound, 20.0 sq cm or less 97597

This procedure involves the careful removal of damaged or infected tissue from a wound that's 20.0 square cm or less. It's done to promote healing and prevent further infection. The process is carried out under local anesthesia, ensuring minimal discomfort.

16 services12 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

15 services14 patients

Removal of impacted ear wax 69210

Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.

14 services13 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

14 services14 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Medstar Southern Maryland Hospital Center

Acute Care Hospitals · Clinton, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210062

Location7503 Surratts RoadClinton, MD 20735 · Prince Georges County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20735 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

Established Patient

$113.72 typical visit price

range $21.40 – $158.88

Typical copayment $28.43 (range $5.35 – $39.72)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

63.75/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

66.06

Improvement Activities

Cost

61.21

Referred Medical Equipment & Supplies CMS DME claims 25

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

29 suppliers94 claims334 services$6.15 avg. paid by Medicare

Normal, low and high calibrator solution / chips A4256

DME-Other DME · category DE000N

5 suppliers21 claims21 services$2.36 avg. paid by Medicare

Spring-powered device for lancet, each A4258

DME-Other DME · category DE000N

4 suppliers11 claims11 services$1.50 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

23 suppliers53 claims95 services$1.06 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

4 suppliers35 claims35 services$34.20 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

4 suppliers32 claims32 services$74.22 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

4 suppliers32 claims92 services$28.60 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

4 suppliers16 claims16 services$47.53 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

6 suppliers27 claims27 services$16.40 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

5 suppliers39 claims229 services$1.93 avg. paid by Medicare

Water chamber for humidifier, used with positive airway pressure device, replacement, each A7046

DME-Other DME · category DE001N

6 suppliers21 claims21 services$10.60 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

3 suppliers34 claims34 services$34.18 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

4 suppliers59 claims59 services$13.48 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

3 suppliers77 claims77 services$3.88 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

2 suppliers39 claims39 services$22.99 avg. paid by Medicare

Neuromuscular stimulator, electronic shock unit E0745

DME-Other DME · category DE000N

1 supplier11 claims11 services$56.55 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

8 suppliers139 claims141 services$64.96 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

2 suppliers67 claims67 services$33.43 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

7 suppliers22 claims10,689 services$0.03 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

3 suppliers55 claims55 services$14.07 avg. paid by Medicare

Lightweight wheelchair K0003

DME-Wheelchairs · category DD000N

3 suppliers49 claims49 services$18.74 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

9 suppliers125 claims125 services$186.87 avg. paid by Medicare

Receiver (monitor), dedicated, for use with therapeutic glucose continuous monitor system K0554

DME-Other DME · category DE017N

5 suppliers23 claims23 services$191.73 avg. paid by Medicare

Shoulder elbow wrist hand orthosis, abduction positioning, airplane design, prefabricated, includes fitting and adjustment L3960

DME-Orthotic Devices · category DF000N

3 suppliers12 claims12 services$559.54 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

7 suppliers23 claims23 services$24.88 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

I AM LISTENING LLC

Clinic/Center (Mental Health (Including Community Mental Health Center))

9135 PISCATAWAY ROAD
CLINTON, MD 20735

Prince George's County (301) 648-2335

TOTAL YOU INTEGRATIVE MEDICINE CENTER

Psychologist (Clinical)

9135 PISCATAWAY ROAD, SUITE 410
CLINTON, MD 20735

Prince George's County (240) 348-7860

JACQUELINE N ROGERS LCPC

Counselor (Professional)

9135 PISCATAWAY ROAD, SUITE 340
CLINTON, MD 20735

Prince George's County (301) 868-0400

ARASTOO YAZDANI MD PC

Internal Medicine

9135 PISCATAWAY ROAD, SUITE 235
CLINTON, MD 20735

Prince George's County (301) 877-2150

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Chike Onwuka's NPI number?

The NPI number for Chike Onwuka is 1013065267. It was assigned to this individual provider in the NPPES registry on January 6, 2007.

Where is Chike Onwuka located?

Chike Onwuka practices at 9135 Piscataway Road Suite 420, Clinton, MD 20735. The listed phone number is (301) 868-2555.

What is Chike Onwuka's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Chike Onwuka enrolled in Medicare?

Yes. Chike Onwuka is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Chike Onwuka's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Chike Onwuka reassigns Medicare benefits to G Medicine LLC (Clinton, MD). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Chike Onwuka's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Chike Onwuka affiliated with any hospitals?

According to CMS data, Chike Onwuka is affiliated with Medstar Southern Maryland Hospital Center.

When was this NPI record last updated?

The NPPES record for Chike Onwuka was last updated on October 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.