John Herbert Rees, M.D.
Diagnostic Radiology Physician · Baltimore, MD
John Herbert Rees, M.D. is a diagnostic radiology physician with a practice address in Baltimore, Maryland, and NPI 1033199344, issued on Jan 20, 2006. Check the license (Maryland D0047894, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- John Herbert Rees
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- D0047894 MD
ME73861 FL
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St RM S2A19, Baltimore, MD 21201
- Phone
- (410) 328-3477
- Enumerated
- Jan 20, 2006
- Record last updated
- Jul 23, 2026
- Fax
- (410) 328-0641
- Medicaid IDs
- 965401100 MD
021574800 FL
104520401 MI - Medicare enrollment
- Enrolled (PECOS I20110823000992); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 877 in Maryland → Look up another NPI →
Also registered at 22 S Greene St RM S2A19
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Herbert Rees in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0047894Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 78.2 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 4 group practices
- Florida Clinical Practice Association IncGainesville, FL
- University Imaging Center, LLCBaltimore, MD
- University OF Maryland Diagnostic Imaging Specialists P ABaltimore, MD
- University OF Maryland Diagnostic Radiology, LLCLa Plata, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Herbert Rees among 877 diagnostic radiology physician records in Maryland
John Herbert Rees, M.D. is one of 877 diagnostic radiology 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1981 · median 2003 among the 604 with a school on file
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
493 diagnostic radiology physician records list a practice address in Baltimore
They are 493 of the 35,183 NPPES records with a practice address in Baltimore, and 877 diagnostic radiology physician records in Maryland.
All 877 in Maryland → Every provider in Baltimore → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Benita Banks, MDBaltimore, MD 212011801867593
- William Carter, M.D.Baltimore, MD 212011912905563
- Barry Daly, MDBaltimore, MD 212011932195989
- George Gross, MDBaltimore, MD 212011649266610
- Jeffrey Hirsch, M.D.Baltimore, MD 212011023097060
- Marcia McAvoy, M.D.Baltimore, MD 212011942296124
- Reuben Mezrich, MDBaltimore, MD 212011306832480
- Michael Mulligan, MDBaltimore, MD 212011972599553
Common questions
What is John Herbert Rees, M.D.'s NPI number?
John Herbert Rees, M.D.'s National Provider Identifier (NPI) is 1033199344, issued on Jan 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Herbert Rees, M.D. located?
The NPPES record lists a practice address at 22 S Greene St RM S2A19, Baltimore, MD, 21201. Phone: (410) 328-3477. Providers update this record themselves, so call before visiting.
How can I verify John Herbert Rees, M.D.'s license?
NPPES lists Maryland license number D0047894, 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.
What is John Herbert Rees, M.D.'s MIPS final score?
The 2023 MIPS final score is 78.2 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.