Efren J. Flores, MD
Diagnostic Radiology Physician · Boston, MA
Efren J. Flores, MD is a diagnostic radiology physician with a practice address in Boston, Massachusetts, and NPI 1982730628, issued on Feb 26, 2007. Check the license (Massachusetts 230925, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Efren J. Flores
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 230925 MA
Self-reported in NPPES; status is on the state search - Practice location
- Massachusetts General Hospital, Boston, MA 02114
- Phone
- (617) 724-4255
- Enumerated
- Feb 26, 2007
- Record last updated
- Feb 24, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100707000035); accepts Medicare assignment
- Medical or professional school
- University Of Puerto Rico School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,658 in Massachusetts → Look up another NPI →
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Verify Efren J. Flores in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 230925Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Doctors Center Hospital IncManati, PR
- Massachusetts General Physicians Organization IncDanvers, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Efren J. Flores among 1,658 diagnostic radiology physician records in Massachusetts
Efren J. Flores, MD is one of 1,658 diagnostic radiology physician records with a practice address in Massachusetts. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 49% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2005 · median 2006 among the 1,125 with a school on file
- Record last updated2010 · 53% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
896 diagnostic radiology physician records list a practice address in Boston
They are 896 of the 41,865 NPPES records with a practice address in Boston, and 1,658 diagnostic radiology physician records in Massachusetts.
All 1,658 in Massachusetts → Every provider in Boston → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Gerald Abbott, MDBoston, MA 021141316935299
- Michael Blake, MDBoston, MA 021141871583039
- Miriam Bredella, MDBoston, MA 021141861482028
- Peter Hahn, MD PHDBoston, MA 021141801886429
- Deborah Hall, MDBoston, MA 021141083604813
- Susan Kattapuram, MDBoston, MA 021141013907294
- Miriam Neuman, MDBoston, MA 021141689668675
- Zulmarie Roig, MDBoston, MA 021141508856626
Common questions
What is Efren J. Flores, MD's NPI number?
Efren J. Flores, MD's National Provider Identifier (NPI) is 1982730628, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Efren J. Flores, MD located?
The NPPES record lists a practice address at Massachusetts General Hospital, Boston, MA, 02114. Phone: (617) 724-4255. Providers update this record themselves, so call before visiting.
How can I verify Efren J. Flores, MD's license?
NPPES lists Massachusetts license number 230925, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.