Physician Profile
John P. Karis, M.D.
Unclaimed ProfileAbout Dr. Karis
Based in Phoenix, AZ, John P. Karis, M.D. is listed in the NPI registry under diagnostic radiology. John graduated from Duke University School of Medicine in 1987. John is also listed as specializing in nuclear medicine. According to Medicare claims data, John cared for 1,637 Medicare patients across 1,789 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (602) 406-3000
- Email not available
Practice Locations
350 W THOMAS RD
Phoenix, AZ 85013
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
- Uterine Fibroids
Bone & Joint
- Ankle Sprain or Fracture
- Broken Bone
- Hip osteoarthritis
- Osteoporosis
- Plantar Fasciitis
- Rotator cuff tear
- Torn meniscus
Brain & Head
Brain & nerves
- Water On Baby's Brain
Breast
Chest & Heart
General
Heart & blood vessels
Joint & bone
- Hip Labral Tear
- Shoulder Labrum Tear
- Stress Fracture
- Tennis Elbow
- Torn Achilles tendon
- Torn ACL
Liver & digestion
Lungs & breathing
Men's health
Neck & Thyroid
Nerve pain
Pelvic health
Spine
Spine & back
Vascular
Women's health
- Endometriosis
- Pelvic Congestion Syndrome
Procedures & services
Abdominal imaging
- Abdominal X-Ray
Biopsies
- Image-Guided Needle Biopsy
- Thyroid Nodule Biopsy
Bone Density
Breast Imaging
CT Scan
Digestive & liver
- FibroScan
- Virtual Colonoscopy
Fluoroscopy
General imaging
- Fluoroscopy
- Soft tissue ultrasound
Heart & blood vessels
- CT angiogram
- Heart MRI (Cardiac MRI)
- MR Angiogram
Joint & bone
- Hip X-Ray
- Joint injection with dye
- Knee X-Ray
- Wrist MRI
MRI
Nuclear Medicine
Pelvic imaging
- Pelvic CT Scan
- Pelvic MRI
Screening & Prevention
Spine & back
- Spine CT Scan
Ultrasound
- Abdominal Ultrasound
- Carotid Ultrasound
- Leg Vein Ultrasound
- Pelvic ultrasound
- Scrotal Ultrasound
- Thyroid ultrasound
- Ultrasound
Urinary & kidney
Women's health
- Hysterosalpingogram consultation
X-Ray
Procedures Most Often Billed to Medicare
1,789 services · 1,637 patients · 23 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of spinal fluid with lower back spinal tap for diagnostic test using imaging guidance | Procedure | 62328 |
21 |
| Ct scan head or brain without contrast | Imaging | 70450 |
477 |
| Mri scan of brain before and after contrast | Imaging | 70553 |
293 |
| Ct scan of upper spine without contrast | Imaging | 72125 |
113 |
| Mri scan of brain without contrast | Imaging | 70551 |
113 |
| Ct scan of lower spine without contrast | Imaging | 72131 |
91 |
| Ct scan of blood vessels of head with contrast | Imaging | 70496 |
89 |
| Ct scan of blood vessels of neck with contrast | Imaging | 70498 |
82 |
| Ct scan of head or brain before and after contrast | Imaging | 70470 |
74 |
| Ct scan of middle spine without contrast | Imaging | 72128 |
61 |
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 diagnostic radiology specialists 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 diagnostic radiology specialists in Phoenix 3
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Duke University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1987 at Duke University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of spinal fluid with lower back spinal tap for diagnostic test using imaging guidance 8
Providers in AZ who bill this service to Medicare most often.
Common questions
What is Dr. Karis's specialty?
Dr. Karis is a diagnostic radiology in Phoenix, AZ. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DIAGNOSTIC RADIOLOGY”.
NPI registry
Where can I find Dr. Karis?
Dr. Karis is listed at 350 W THOMAS RD, Phoenix, AZ 85013. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Karis?
The number on file is (602) 406-3000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Karis's NPI number?
Dr. Karis's National Provider Identifier is 1609841790. 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. Karis's medical education?
Dr. Karis attended Duke University School of Medicine, graduating in 1987. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Karis been practicing?
Dr. Karis has 39 years experience. Calculated from a graduation year of 1987, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Karis known for?
According to Medicare billing data, Dr. Karis performs procedures including removal of spinal fluid with lower back spinal tap for diagnostic test using imaging guidance; reads or performs imaging such as ct scan head or brain without contrast and mri scan of brain before and after contrast. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Karis confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Karis. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.