Dr. Efren J. Flores, MD
- Medicare services, 2024
- 1,857
- Medicare patients, 2024
- 1,462
- Publications
- 104
- Hospital affiliations
- 6
- Medical groups
- 8
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Flores' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Efren J. Flores is a diagnostic radiologist in Boston, Massachusetts
Dr. Flores practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Flores' NPI, 1982730628, was assigned on February 26, 2007. Dr. Flores graduated from University of Puerto Rico School of Medicine in 2005. Dr. Flores holds Massachusetts license 230925.
- NPI
- 1982730628NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042341125
- NPI enumeration date
- February 26, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Efren J. Flores practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Flores' primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Efren J. Flores is affiliated with 10 sites of care and 8 medical groups
Dr. Flores' primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Flores is also affiliated with Brigham and Women's Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Flores to 4 more hospitals, 7 medical groups, 3 group practices and clinics and 1 community health center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Efren J. Flores' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Flores practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +9 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mass General Brigham and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Efren J. Flores is one of 1,246 diagnostic radiologists in Massachusetts
Diagnostic radiology is Dr. Flores' primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Flores is licensed in Massachusetts.
Specialties and state licenses
- Diagnostic radiology, MassachusettsPrimary
Diagnostic radiologists near Dr. Flores
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Efren J. Flores billed Medicare for 1,857 services in 2024
CMS data shows 1,857 Medicare services from Dr. Flores across 6 procedure codes in 2024, for 1,462 Medicare patients. Medicare paid $37,229 for them.
Where Dr. Flores' Medicare services took place, 2024
- In an office19210%
- In a facility1,66590%
Dr. Flores compared with the Massachusetts median for diagnostic radiologists, 2024
- Dr. Flores
- Massachusetts median
- Medicare services
- 1,857vs 2,24217% below
- Medicare patients
- 1,462vs 1,5717% below
Medians across 1,108 diagnostic radiologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Flores' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Flores?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Flores and other diagnostic radiologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Efren J. Flores treated 1,462 Medicare patients in 2024, average age 74
CMS counts 1,462 Medicare patients who saw Dr. Flores in 2024. The largest group is 65 to 74, with 586 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 2.24, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Flores' median patient age at 65, with 41% women.
Dr. Flores' Medicare patients by age, 2024
Dr. Flores' Medicare patients by sex, 2024
- Women70548%
- Men75752%
Chronic conditions among Dr. Flores' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease51%
- Arthritis47%
- Chronic kidney disease44%
- Anxiety42%
- Heart failure42%
- Atrial fibrillation40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Flores' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women41%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Efren J. Flores takes part in Medicare
Dr. Flores accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Efren J. Flores has 104 publications on record
Dmand AI links 104 papers to Dr. Flores, published from 2013 to 2025. 2021 was the busiest year, with 13. The most frequent topics are Early Detection of Cancer, Lung Neoplasms and Breast Neoplasms. Dr. Flores has published most often in J Am Coll Radiol. Dr. Flores' most frequent co-authors are Randy Miles, MD, Brent P. Little, MD and Florian Johannes Fintelmann, MD.
Dr. Flores' papers by year, 2016 to 2025
Topics Dr. Flores writes about most
- Early Detection of Cancer
- Lung Neoplasms
- Breast Neoplasms
- Tomography, X-Ray Computed
- Radiology
- COVID-19
- Mammography
- Mass Screening
Dr. Flores' most frequent co-authors
- Randy Miles, MD16 shared papers
- Brent P. Little, MD15 shared papers
- Florian Johannes Fintelmann, MD9 shared papers
Recent publications by Dr. Flores
See who Dr. Flores researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Flores works with, so you can find a warm path to the right diagnostic radiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Efren J. Flores graduated from University of Puerto Rico School of Medicine
Dr. Flores graduated from University of Puerto Rico School of Medicine in 2005.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Efren J. Flores's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Efren J. Flores
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Efren J. Flores' NPI number?
Dr. Efren J. Flores' NPI number is 1982730628. It was assigned on February 26, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Efren J. Flores?
Dr. Efren J. Flores is a diagnostic radiologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Efren J. Flores practice?
Dr. Flores practices at 55 Fruit Street, Boston, MA 02114. Dr. Flores' primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Flores to 4 hospitals, 7 medical groups, 3 group practices and clinics and 1 community health center.
What is Dr. Efren J. Flores' office phone number?
The practice phone on file for Dr. Flores is (617) 726-2000.
What is Dr. Efren J. Flores' medical license number?
Dr. Flores holds Massachusetts license 230925.
Which hospitals is Dr. Efren J. Flores affiliated with?
Dr. Flores practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Flores is also affiliated with Brigham and Women's Hospital. Dmand AI links Dr. Flores to 4 more hospitals.
What medical group is Dr. Efren J. Flores part of?
Dr. Flores is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Flores to 7 more medical groups.
Does Dr. Efren J. Flores accept Medicare?
Yes. CMS data shows Dr. Flores billed Medicare for 1,857 services in 2024, and Dr. Flores accepts Medicare assignment.
How many Medicare patients does Dr. Efren J. Flores see?
CMS counts 1,462 Medicare patients who saw Dr. Flores in 2024, with an average age of 74.
What services does Dr. Efren J. Flores bill to Medicare?
In 2024, Dr. Flores' most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (71260) and diagnostic imaging (71250).
Show 4 more questionsShow fewer questions
Where did Dr. Efren J. Flores go to medical school?
Dr. Flores graduated from University of Puerto Rico School of Medicine in 2005.
How long has Dr. Efren J. Flores been practicing?
Dr. Flores graduated from medical school in 2005, 21 years ago.
Does Dr. Efren J. Flores do research?
Dmand AI links 104 publications to Dr. Flores, published from 2013 to 2025.
Who does Dr. Efren J. Flores publish with?
Dr. Flores' most frequent co-authors are Randy Miles, MD (16 shared papers), Brent P. Little, MD (15 shared papers) and Florian Johannes Fintelmann, MD (9 shared papers).
Selling to diagnostic radiology practices?
See diagnostic radiologists in Massachusetts by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card