Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Samuel Chijioke Onyewu, MBCHB

Individual provider Anesthesiology Physician · NPI 1770901514

Dr. Samuel Chijioke Onyewu, MBCHB practises Anesthesiology in Baltimore, Maryland. Qualified in 2009, 17 years ago. Practices with Mary Washington Healthcare Specialty Services, LLC, a 137-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Connecticut, Maryland, Pennsylvania and Virginia.

Years since qualifying
17
Licensed in
CT, MD, PA, VA
In the registry since
2014
Specialties on file
4
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Practice location Address checks out

22 S Greene St Fl 11
Baltimore, MD 21201-1544
Phone: (667) 214-1616
Fax: (410) 328-1674
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 1200 S Cedar Crest Blvd Fl 2, Allentown, PA 18103-6202 — (610) 402-6164
  • 1201 Sam Perry Blvd Ste 101, Fredericksburg, VA 22401-4490 — (540) 741-7614
  • 1001 Sam Perry Blvd, Fredericksburg, VA 22401-4453 — (540) 741-7614
  • 101 Hospital Center Blvd, Stafford, VA 22554-6200 — (540) 741-7614

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence D0082177 (MD)
Anesthesiology Physician Taxonomy 207L00000X · Licence 66462 (CT)
Anesthesiology Physician Taxonomy 207L00000X · Licence 0101262259 (VA)
Anesthesiology Physician Taxonomy 207L00000X · Licence MD494523 (PA)

Record details

NPI number1770901514
Entity typeIndividual (Type 1)
GenderMale
Credentials MBCHB
Sole proprietorNo
NPI enumeratedMarch 30, 2014
Last updated in NPPESJuly 20, 2026
Certification dateJuly 20, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Also practisesPAIN MANAGEMENT
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Mary Washington Healthcare Specialty Services, Llc — 137 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients160
Services billed 183 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $97 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Mary Washington Healthcare Specialty Services, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 137 clinicians in the practice; 12 are shown here.

Other providers in Baltimore