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Edit this profileAt a glance
- 655 W 8Th St # C90, Clinical Center, 1St Floor, Jacksonville, FL 32209
About Dr. Helquist
Mark Helquist, M.D. is a healthcare provider in Jacksonville, FL specializing in diagnostic radiology. Mark trained at University of Florida College of Medicine, graduating in 2004. According to Medicare claims data, Mark cared for 1,493 Medicare patients across 1,664 services. The services billed most often include x-ray of chest, 1 view, ct scan head or brain without contrast, and ct scan of abdomen and pelvis with contrast. This provider record is associated with NPI 1427110642.
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
- (904) 244-4225
- Email not available
Practice Locations
655 W 8TH ST # C90 CLINICAL CENTER, 1ST FLOOR
Jacksonville, FL 32209
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
Abdominal imaging
Biopsies
Bone Density
Breast Imaging
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
1,664 services · 1,493 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
570 | More often than most peers in Diagnostic Radiology |
| Ct scan head or brain without contrast | Imaging | 70450 |
156 | As often as other peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
79 | As often as other peers in Diagnostic Radiology |
| Screening mammography | Imaging | 77067 |
76 | Less often than most peers in Diagnostic Radiology |
| Screening 3d breast mammography | Imaging | 77063 |
76 | Less often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
69 | As often as other peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
62 | As often as other peers in Diagnostic Radiology |
| Ct scan of upper spine without contrast | Imaging | 72125 |
60 | As often as other peers in Diagnostic Radiology |
| X-ray of abdomen, 1 view | Imaging | 74018 |
54 | As often as other peers in Diagnostic Radiology |
| Limited ultrasound scan behind abdominal cavity | Imaging | 76775 |
53 | 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.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
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 Jacksonville 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of Florida College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2004 at University of Florida College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 1 view 8
Providers in FL who bill this service to Medicare most often.
Common questions
What does Mark Helquist specialize in?
Mark Helquist is a radiologist in Jacksonville, FL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where is Mark Helquist located?
Mark Helquist is listed at 655 W 8Th St # C90 Clinical Center, 1St Floor, Jacksonville, FL 32209. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mark Helquist's phone number?
The number on file is (904) 244-4225. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark Helquist's NPI number?
Mark Helquist's National Provider Identifier is 1427110642. 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 Mark Helquist train?
Mark Helquist attended University of Florida College of Medicine, graduating in 2004. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark Helquist been practicing?
Mark Helquist has 22 years experience. Calculated from a graduation year of 2004, reported in the CMS National Downloadable File.
CMS public data
What does Mark Helquist do most often?
According to Medicare billing data, Mark Helquist performs imaging including x-ray of chest, 1 view and ct scan head or brain without contrast. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark Helquist confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark Helquist. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.