Quick answers
- Does Nnenna I. Okigbo accept Medicare assignment?
- Yes. Medicare's clinician data says Nnenna I. Okigbo 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 Nnenna I. Okigbo see?
- In 2024, CMS data shows 124 Original Medicare patients and 750 services for Nnenna I. Okigbo. This counts Original Medicare only and measures volume, not quality.
- What is Nnenna I. Okigbo's NPI number?
- 1538167028. 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 Nnenna I. Okigbo, 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 | 124 |
|---|---|
| Services billed to Medicare | 750 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)190 services
- Insertion of needle into vein for collection of blood sample (36415)113 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)106 services
- Annual alcohol misuse screening, 5 to 15 minutes (G0442)92 services
- Annual depression screening, 5 to 15 minutes (G0444)91 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%
- Diabetes36%
- Arthritis23%
- Osteoporosis16%
- Chronic kidney disease15%
Practice locations
Addresses where Nnenna I. Okigbo is enrolled with Medicare (CMS data updated October 2, 2026).
- 11161 New Hampshire Ave, Suite 305Silver Spring, MD 20904 (301) 592‑0062
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Silver Spring
Clinicians with the same Medicare primary specialty in Silver Spring, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538167028 |
| 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