Nicholas William Rizer
Emergency Medicine Physician · Baltimore, MD
Nicholas William Rizer is an emergency medicine physician with a practice address in Baltimore, Maryland, and NPI 1427635184, issued on Mar 26, 2021. Check the license (Maryland D0100470, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Nicholas William Rizer
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- D0100470 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1830 E Monument St Ste 6-100, Baltimore, MD 21287
- Phone
- (410) 955-5000
- Enumerated
- Mar 26, 2021
- Record last updated
- Nov 5, 2024
- Medicare enrollment
- Enrolled (PECOS I20241115001264); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,190 in Maryland → Look up another NPI →
Also registered at 1830 E Monument St Ste 6-100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nicholas William Rizer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0100470Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average emergency medicine physician in 2024
38 Medicare Part D claims for 25 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Emergency Physicians SppsBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas William Rizer among 1,190 emergency medicine physician records in Maryland
Nicholas William Rizer is one of 1,190 emergency medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 94% of them.
- NPI issued2021 · 94% of these records are older, 3% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 48% of these records are
- Graduated2021 · median 2010 among the 571 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
505 emergency medicine physician records list a practice address in Baltimore
They are 505 of the 35,183 NPPES records with a practice address in Baltimore, and 1,190 emergency medicine physician records in Maryland.
All 1,190 in Maryland → Every provider in Baltimore → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
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- Robin Cuddy, M.D.Baltimore, MD 212871861432965
- Gary Green, M.D.Baltimore, MD 212871245295872
- Peter Hill, M.D.Baltimore, MD 212871336199835
- Edbert Hsu, M.D.Baltimore, MD 212871699728097
- Julianna Jung, M.D.Baltimore, MD 212871871534404
- Gabor Kelen, M.D.Baltimore, MD 212871134166366
Common questions
What is Nicholas William Rizer's NPI number?
Nicholas William Rizer's National Provider Identifier (NPI) is 1427635184, issued on Mar 26, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas William Rizer located?
The NPPES record lists a practice address at 1830 E Monument St Ste 6-100, Baltimore, MD, 21287. Phone: (410) 955-5000. Providers update this record themselves, so call before visiting.
How can I verify Nicholas William Rizer's license?
NPPES lists Maryland license number D0100470, 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 Nicholas William Rizer prescribe under Medicare Part D?
In 2024, Nicholas William Rizer had 38 Medicare Part D claims for 25 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.