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Edit this profileWhere to find John P. Karis, M.D.
- Phoenix location main office
350 W Thomas Rd, Phoenix, AZ 85013 - Harlingen location
2101 Pease St, Harlingen, TX 78550
About Dr. Karis
Based in Phoenix, AZ, John P. Karis, M.D. is listed in the NPI registry under nuclear medicine. John graduated from Duke University School of Medicine in 1987. John is also listed as specializing in diagnostic radiology. According to Medicare claims data, John cared for 1,637 Medicare patients across 1,789 services. The services billed most often include ct scan head or brain without contrast, mri scan of brain before and after contrast, and ct scan of upper spine without contrast. NPI 1609841790 identifies this record in the national registry.
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
- (602) 406-3000
- Email not available
Practice Locations
350 W THOMAS RD
Phoenix, AZ 85013
2101 Pease St
Harlingen, TX 78550
Procedures Most Often Billed to Medicare
1,789 services · 1,637 patients · 23 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of spinal fluid with lower back spinal tap for diagnostic test using imaging guidance | Procedure | 62328 |
21 | More often than most peers in Nuclear Medicine |
| Ct scan head or brain without contrast | Imaging | 70450 |
477 | More often than most peers in Nuclear Medicine |
| Mri scan of brain before and after contrast | Imaging | 70553 |
293 | More often than most peers in Nuclear Medicine |
| Ct scan of upper spine without contrast | Imaging | 72125 |
113 | More often than most peers in Nuclear Medicine |
| Mri scan of brain without contrast | Imaging | 70551 |
113 | As often as other peers in Nuclear Medicine |
| Ct scan of lower spine without contrast | Imaging | 72131 |
91 | More often than most peers in Nuclear Medicine |
| Ct scan of blood vessels of head with contrast | Imaging | 70496 |
89 | As often as other peers in Nuclear Medicine |
| Ct scan of blood vessels of neck with contrast | Imaging | 70498 |
82 | As often as other peers in Nuclear Medicine |
| Ct scan of head or brain before and after contrast | Imaging | 70470 |
74 | More than most peers in Nuclear Medicine |
| Ct scan of middle spine without contrast | Imaging | 72128 |
61 | More often than most peers in Nuclear Medicine |
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 8
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 nuclear medicines in Phoenix 8
Same specialty, same city.
More connections — 17 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 1
Providers in AZ who bill this service to Medicare most often.
Common questions
What is John P. Karis's specialty?
John P. Karis is a nuclear medicine in Phoenix, AZ. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find John P. Karis?
John P. 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 John P. Karis?
The number on file is (602) 406-3000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is John P. Karis's NPI number?
John P. 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 John P. Karis's education?
John P. Karis attended Duke University School of Medicine, graduating in 1987. This comes from the CMS National Downloadable File.
CMS public data
How long has John P. Karis been practicing?
John P. Karis has 39 years experience. Calculated from a graduation year of 1987, reported in the CMS National Downloadable File.
CMS public data
What is John P. Karis known for?
According to Medicare billing data, John P. 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 John P. Karis confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John P. Karis. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.