Mary Ann N. Onyeali, MD, MBA
Anesthesiology Physician · Baltimore, MD
Mary Ann N. Onyeali, MD, MBA is an anesthesiology physician with a practice address in Baltimore, Maryland, and NPI 1710320312, issued on Apr 12, 2013. Check the license (Maryland D83953, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mary Ann N. Onyeali
- Credential
- MD, MBA
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- D83953 MD
Self-reported in NPPES; status is on the state search - Practice location
- 5601 Loch Raven Blvd, Baltimore, MD 21239
- Phone
- (443) 444-8000
- Enumerated
- Apr 12, 2013
- Record last updated
- Aug 7, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180213001551); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,253 in Maryland → Look up another NPI →
Also registered at 5601 Loch Raven Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sana Ahmed, PA-CMedical Physician Assistant1750943411
- Jemima Felicity Albayda, MDRheumatology Physician1285955765
- Christen Alevizatos, M.D.Urology Physician1154376325
Verify Mary Ann N. Onyeali in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D83953Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average anesthesiology physician in 2024
18 Medicare Part D claims, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Anesthesia Company LLCAnnapolis, MD
- Northstar Anesthesia OF Virginia, LLCAlexandria, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Ann N. Onyeali among 1,253 anesthesiology physician records in Maryland
Mary Ann N. Onyeali, MD, MBA is one of 1,253 anesthesiology physician records with a practice address in Maryland. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 75% of them.
- NPI issued2013 · 75% of these records are older, 21% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2013 · median 2005 among the 813 with a school on file
- Record last updated2019 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
523 anesthesiology physician records list a practice address in Baltimore
They are 523 of the 35,183 NPPES records with a practice address in Baltimore, and 1,253 anesthesiology physician records in Maryland.
All 1,253 in Maryland → Every provider in Baltimore → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Cecilia Callahan, MDBaltimore, MD 212391528098464
- Stephen Derrer, MDBaltimore, MD 212391992733968
- William Dombrowski, M.D.Baltimore, MD 212391891702239
- Susan Galada, D.O.Baltimore, MD 212391750364279
- Claro Lavina, MDBaltimore, MD 212391306888060
- Brian Lee, MDBaltimore, MD 212391184658262
- Yongbo Liao, MDBaltimore, MD 212391659393387
- Tiffani Pittman, M.D.Baltimore, MD 212391003170002
Common questions
What is Mary Ann N. Onyeali, MD, MBA's NPI number?
Mary Ann N. Onyeali, MD, MBA's National Provider Identifier (NPI) is 1710320312, issued on Apr 12, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ann N. Onyeali, MD, MBA located?
The NPPES record lists a practice address at 5601 Loch Raven Blvd, Baltimore, MD, 21239. Phone: (443) 444-8000. Providers update this record themselves, so call before visiting.
How can I verify Mary Ann N. Onyeali, MD, MBA's license?
NPPES lists Maryland license number D83953, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Ann N. Onyeali, MD, MBA prescribe under Medicare Part D?
In 2024, Mary Ann N. Onyeali, MD, MBA had 18 Medicare Part D claims; the average among anesthesiology physician prescribers was 402. Part D covers Medicare prescriptions only.
What is Mary Ann N. Onyeali, MD, MBA's MIPS final score?
The 2023 MIPS final score is 74.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.