Quick answers
- Does Charles A. Obioha accept Medicare assignment?
- Yes. Medicare's clinician data says Charles A. Obioha accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Charles A. Obioha see?
- In 2024, CMS data shows 77 Original Medicare patients and 233 services for Charles A. Obioha. This counts Original Medicare only and measures volume, not quality.
- What is Charles A. Obioha's NPI number?
- 1235224270. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Charles A. Obioha, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 77 |
|---|---|
| Services billed to Medicare | 233 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)69 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)43 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)35 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)25 services
- Colorectal cancer screening; colonoscopy on individual at high risk (G0105)18 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes48%
- Arthritis47%
- Ischemic heart disease26%
- Anxiety23%
Practice locations
Addresses where Charles A. Obioha is enrolled with Medicare (CMS data updated October 2, 2026).
- 11400 Rockville Pike, Suite 108Rockville, MD 20852 (301) 770‑3334
Group practices
Medicare enrollment lists Charles A. Obioha as a member of this group (CMS data updated October 2, 2026).
- Digestive Disease Clinic LLC3 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Rockville
Clinicians with the same Medicare primary specialty in Rockville, MD — not a recommendation.
Other clinicians in Digestive Disease Clinic LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1986 (40 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1235224270 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians