Oliver Michael Berrett, M.D.
Emergency Medicine Physician · Baltimore, MD
Oliver Michael Berrett, M.D. is an emergency medicine physician with a practice address in Baltimore, Maryland, and NPI 1790066645, issued on Sep 6, 2011. Check the license (Maryland D74263, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Oliver Michael Berrett
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- D74263 MD
262756 NY
Self-reported in NPPES; status is on the state search - Practice location
- 600 N Wolfe St, Baltimore, MD 21287
- Phone
- (410) 955-2280
- Enumerated
- Sep 6, 2011
- Record last updated
- Feb 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 055644100 MD
- Medicare enrollment
- Enrolled (PECOS I20140825001163); 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 600 N Wolfe St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Oliver Michael Berrett in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D74263Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.6 times the Medicare Part D claims of the average emergency medicine physician in 2024
811 Medicare Part D claims for 597 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 45 claims were for opioids.
Most prescribed
- Cefuroxime100 claims
- Prednisone97 claims
- Azithromycin73 claims
- Cephalexin54 claims
- Amoxicillin-Clavulanate Potass38 claims
- Ondansetron Hcl27 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): 97.4 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
- Cape Cod Emergency Associates LLPHyannis, MA
- Urgi Center Medical GroupHyannis, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oliver Michael Berrett among 1,190 emergency medicine physician records in Maryland
Oliver Michael Berrett, M.D. 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 2011, is newer than 61% of them.
- NPI issued2011 · 61% of these records are older, 35% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 48% of these records are
- Graduated2007 · median 2010 among the 571 with a school on file
- Record last updated2013 · 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 →
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- Gabor Kelen, M.D.Baltimore, MD 212871134166366
Common questions
What is Oliver Michael Berrett, M.D.'s NPI number?
Oliver Michael Berrett, M.D.'s National Provider Identifier (NPI) is 1790066645, issued on Sep 6, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Oliver Michael Berrett, M.D. located?
The NPPES record lists a practice address at 600 N Wolfe St, Baltimore, MD, 21287. Phone: (410) 955-2280. Providers update this record themselves, so call before visiting.
How can I verify Oliver Michael Berrett, M.D.'s license?
NPPES lists Maryland license number D74263, 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 Oliver Michael Berrett, M.D. prescribe under Medicare Part D?
In 2024, Oliver Michael Berrett, M.D. had 811 Medicare Part D claims for 597 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Oliver Michael Berrett, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.4 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.