Douglas D. Mayo, M.D.
Emergency Medical Services (Emergency Medicine) Physician · Baltimore, MD
Douglas D. Mayo, M.D. is an emergency medical services (emergency medicine) physician with a practice address in Baltimore, Maryland, and NPI 1548221062, issued on Apr 1, 2006. Check the license (Maryland D006155, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Douglas D. Mayo
- Credential
- M.D.
- Primary taxonomy
- Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
- License numbers
- D006155 MD
D0061555 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St, Baltimore, MD 21201
- Phone
- (410) 362-3000
- Enumerated
- Apr 1, 2006
- Record last updated
- Jun 20, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid IDs
- 405539000 MD
451601000 MD - Medicare enrollment
- Enrolled (PECOS I20120809000428); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medical services (emergency medicine) physician records → All 38 in Maryland → Look up another NPI →
Also registered at 22 S Greene St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Elsadig Abdalla, MDStudent in an Organized Health Care Education/Training Program1073364477
- Ehssan AbdolalizadehStudent in an Organized Health Care Education/Training Program1093653271
- Mohammad Abdulelah, MDStudent in an Organized Health Care Education/Training Program1114650108
- Leenah AbdulgaderStudent in an Organized Health Care Education/Training Program1386323301
- Ifedayo Abiola-Matthew, CRNPAcute Care Nurse Practitioner1033781117
Verify Douglas D. Mayo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D006155Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average emergency medical services (emergency medicine) physician in 2024
214 Medicare Part D claims for 136 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 22 claims were for opioids.
Most prescribed
- Naproxen25 claims
- Methocarbamol18 claims
- Ondansetron Odt16 claims
- Oxycodone Hcl14 claims
- Prednisone12 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.
Industry payments in 2024: $14.12
1 payment: food and beverage; the largest payer was Vertex Pharmaceuticals Incorporated. The 489 providers of this specialty with any payment received $337.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Adfinitas Health AT Umcap LLCLargo, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Douglas D. Mayo among 38 emergency medical services (emergency medicine) physician records in Maryland
Douglas D. Mayo, M.D. is one of 38 emergency medical services (emergency medicine) physician records with a practice address in Maryland. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 42% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 37% of these records are
- Graduated1999 · median 1998 among the 14 with a school on file
- Record last updated2012 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medical Services (Emergency Medicine) Physician providers in Maryland
There are 38 emergency medical services (emergency medicine) physician records in Maryland.
All 38 in Maryland → Every provider in Baltimore → Emergency Medical Services (Emergency Medicine) Physician nationwide →
The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes
- Robert Bass, MDBaltimore, MD 212011194857797
- Mohammad Anwar, M.D.Balitmore, MD 212241114043601
- Ryan KramerHalethorpe, MD 212271124067822
- Kraig MelvilleBaltimore, MD 212291821043266
- Tina Latimer, M.D., M.P.H.Baltimore, MD 212871831235340
- Ruben Troncoso, MD, MPHBaltimore, MD 212871053735365
- Fermin Barrueto, M.D.Linthicum Heights, MD 210901548248818
- Yves-Jacques Piquion, M.D.Havre De Grace, MD 210781407991714
Common questions
What is Douglas D. Mayo, M.D.'s NPI number?
Douglas D. Mayo, M.D.'s National Provider Identifier (NPI) is 1548221062, issued on Apr 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas D. Mayo, M.D. located?
The NPPES record lists a practice address at 22 S Greene St, Baltimore, MD, 21201. Phone: (410) 362-3000. Providers update this record themselves, so call before visiting.
How can I verify Douglas D. Mayo, M.D.'s license?
NPPES lists Maryland license number D006155, 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 Douglas D. Mayo, M.D. prescribe under Medicare Part D?
In 2024, Douglas D. Mayo, M.D. had 214 Medicare Part D claims for 136 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. Part D covers Medicare prescriptions only.
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.