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Edit this profileAt a glance
- 52 W Underwood St, Orlando, FL 32806
About Dr. Hallmark
Christopher A. Hallmark, MD practices diagnostic radiology in Orlando, FL. Christopher is a 2006 graduate of Baylor College of Medicine. According to Medicare claims data, Christopher cared for 1,469 Medicare patients across 1,526 services. The services billed most often include x-ray of chest, 1 view, ct scan head or brain without contrast, and ct scan of upper spine without contrast. The provider's National Provider Identifier (NPI) is 1063854354.
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
- (321) 842-8475
- Email not available
Practice Locations
52 W UNDERWOOD ST
Orlando, FL 32806
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
1,526 services · 1,469 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
333 | As often as other peers in Diagnostic Radiology |
| Ct scan head or brain without contrast | Imaging | 70450 |
255 | More often than most peers in Diagnostic Radiology |
| Ct scan of upper spine without contrast | Imaging | 72125 |
126 | More often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
119 | As often as other peers in Diagnostic Radiology |
| Ct scan of blood vessels of chest with contrast | Imaging | 71275 |
109 | More often than most peers in Diagnostic Radiology |
| Ct scan of lower spine without contrast | Imaging | 72131 |
59 | More often than most peers in Diagnostic Radiology |
| Ct scan of middle spine without contrast | Imaging | 72128 |
54 | More often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
47 | As often as other peers in Diagnostic Radiology |
| X-ray of abdomen, 1 view | Imaging | 74018 |
45 | As often as other peers in Diagnostic Radiology |
| Ct scan of blood vessels of abdomen and pelvis with contrast | Imaging | 74174 |
43 | More often than most 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 8
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 Orlando 7
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Baylor College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2006 at Baylor 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 is Dr. Hallmark's specialty?
Dr. Hallmark is a radiologist in Orlando, FL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where can I find Dr. Hallmark?
Dr. Hallmark is listed at 52 W Underwood St, Orlando, FL 32806. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Hallmark?
The number on file is (321) 842-8475. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Hallmark's NPI number?
Dr. Hallmark's National Provider Identifier is 1063854354. 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
What is Dr. Hallmark's medical education?
Dr. Hallmark attended Baylor College of Medicine, graduating in 2006. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Hallmark been practicing?
Dr. Hallmark has 20 years experience. Calculated from a graduation year of 2006, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Hallmark known for?
According to Medicare billing data, Dr. Hallmark performs imaging including x-ray of chest, 1 view and ct scan head or brain without contrast; provides treatments such as ultrasound study of one arm or leg veins with compression and maneuvers. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Hallmark confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hallmark. If this is you, claiming it is free.
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