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Edit this profileAt a glance
- Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114
About Dr. Flores
Efren J. Flores, MD practices diagnostic radiology in Boston, MA. Efren is a 2005 graduate of University of Puerto Rico School of Medicine. According to Medicare claims data, Efren cared for 1,516 Medicare patients across 1,857 services. The services billed most often include x-ray of chest, 1 view, ct scan of chest with contrast, and ct scan of chest without contrast. The provider's National Provider Identifier (NPI) is 1982730628.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (617) 724-4255
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
MASSACHUSETTS GENERAL HOSPITAL 55 FRUIT STREET
Boston, MA 02114
Conditions Evaluated or Diagnosed
Within Diagnostic Radiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Abdomen & Pelvis
- Abdominal Pain
- Appendicitis
- Diverticulitis
- Enlarged prostate
- Gallstones
- Kidney stones
- Liver Lesions
- Ovarian cysts
Bone & Joint
- Ankle Sprain or Fracture
- Bone fractures
- Heel pain
- Hip osteoarthritis
- Osteoporosis
- Rotator cuff tear
- Torn meniscus
Brain & Head
- Brain aneurysm
- Brain tumor
- Concussion in Children
- Migraines
- Sinus infection
- Transient ischemic attack
Brain & nerves
Breast
Chest & Heart
General
Heart & blood vessels
Joint & bone
Liver & digestion
Lungs & breathing
Men's health
Neck & Thyroid
Nerve pain
Pelvic health
Spine
Spine & back
Vascular
Women's health
Procedures & services
Breast Imaging
Abdominal imaging
Biopsies
Bone Density
CT Scan
Digestive & liver
Fluoroscopy
General imaging
Heart & blood vessels
Joint & bone
MRI
Nuclear Medicine
Pelvic imaging
Screening & Prevention
Spine & back
Ultrasound
- Abdominal Ultrasound
- Carotid Ultrasound
- Leg Vein Ultrasound
- Pelvic ultrasound
- Scrotal Ultrasound
- Thyroid ultrasound
- Ultrasound
Urinary & kidney
Women's health
X-Ray
Procedures Most Often Billed to Medicare
1,857 services · 1,516 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
1,067 | More often than most peers in Diagnostic Radiology |
| Ct scan of chest with contrast | Imaging | 71260 |
202 | More than most peers in Diagnostic Radiology |
| Ct scan of chest without contrast | Imaging | 71250 |
188 | More often than most peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
131 | As often as other peers in Diagnostic Radiology |
| Ct scan of chest with contrast | Imaging | 71260 |
96 | More than most peers in Diagnostic Radiology |
| Ct scan of chest without contrast | Imaging | 71250 |
53 | More often than most peers in Diagnostic Radiology |
| Ct scan of blood vessels of chest with contrast | Imaging | 71275 |
46 | As often as other peers in Diagnostic Radiology |
| Low dose ct scan of chest for lung cancer screening | Imaging | 71271 |
31 | As often as other peers in Diagnostic Radiology |
| Low dose ct scan of chest for lung cancer screening | Imaging | 71271 |
27 | As often as other peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
16 | As often as other peers in Diagnostic Radiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other radiologists at this location 3
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other radiologists in Boston 7
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of Puerto Rico School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at University of Puerto Rico School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 1 view 8
Providers in MA who bill this service to Medicare most often.
Common questions
What does Dr. Flores specialize in?
Dr. Flores is a radiologist in Boston, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where is Dr. Flores located?
Dr. Flores is listed at Massachusetts General Hospital 55 Fruit Street, Boston, MA 02114. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Flores's phone number?
The number on file is (617) 724-4255. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Flores's NPI number?
Dr. Flores's National Provider Identifier is 1982730628. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Flores go to medical school?
Dr. Flores attended University of Puerto Rico School of Medicine, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Flores been practicing?
Dr. Flores has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Flores do most often?
According to Medicare billing data, Dr. Flores performs imaging including x-ray of chest, 1 view and ct scan of chest with contrast. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Flores confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Flores. If this is you, claiming it is free.
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