DR. JOHN P KARIS M.D.
NPI 1609841790
Radiology - Neuroradiology in Phoenix, AZ

Q: What is John Karis's NPI number?

The NPI number for John Karis is 1609841790. It was assigned to this individual provider in the NPPES registry on February 22, 2006.

Q: What is John Karis's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Neuroradiology, with taxonomy code 2085N0700X.

Q: When was this NPI record last updated?

The NPPES record for John Karis was last updated on October 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since February 22, 2006PECOS EnrolledAccepts Medicare Assignment

86.25/100

CMS Quality Rating

350 W THOMAS RD, PHOENIX, AZ 85013(602) 406-3000 Get Directions Write a Review

NPPES record last updated: October 7, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. John P Karis M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN P KARIS M.D. (NPI 1609841790) is an individual neuroradiology provider in Phoenix, Arizona, licensed in Arizona (22185) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of Duke University School Of Medicine (1987).

NPPES Registry Identity

NPI1609841790

Entity TypeIndividualMale

Primary Taxonomy2085N0700X

Provider Legal NameDR. JOHN P KARISCredential: M.D.

Location Address350 W THOMAS RDPhoenix, AZ 85013-4409

Mailing AddressPo Box 44037Phoenix, AZ 85064-4037 · (602) 954-6228 · Fax (602) 957-6142

Phone(602) 406-3000

Sole ProprietorNo

Medical School CMSDuke University School Of MedicineGraduated 1987

Enumeration DateFebruary 22, 2006

Last NPPES UpdateOctober 7, 2025

NPPES CertifiedOctober 7, 2025

✔ NPI 1609841790 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · NeuroradiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085N0700X

License✔ Licensed in AZ · 22185

Definition

A radiologist who diagnoses and treats diseases utilizing imaging procedures as they relate to the brain, spine and spinal cord, head, neck and organs of special sense in adults and children.

Also ListedRadiology · Diagnostic RadiologyTaxonomy 2085R0202X · License 22185 (AZ)

350 W THOMAS RD, Phoenix, AZ 85013

Open in Google Maps ↗

Other Identifiers 4

Other1Z7046AZ · Health Net Of Az

Medicaid163725AZ

OtherXPY189520AZ · Medi-cal Medicaid

OtherAZ0382300AZ · Bcbsaz

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. John P Karis M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9436134160

PECOS Enrollment IDI20040618000645

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 23

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Ct scan head or brain without contrast 70450

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

477 services382 patients

Mri scan of brain before and after contrast 70553

An MRI scan of the brain, both before and after contrast, helps visualize different brain structures. Initially, images are taken without a contrast agent. Then, a safe dye is injected which helps highlight certain areas, providing clearer, more detailed images.

293 services267 patients

Mri scan of brain without contrast 70551

An MRI scan of the brain without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your brain. It helps in detecting abnormalities like tumors, stroke, inflammation, or infection.

113 services100 patients

Ct scan of upper spine without contrast 72125

A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.

113 services110 patients

Ct scan of lower spine without contrast 72131

A CT scan of the lower spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed images of your lower back area, helping to detect conditions like fractures, infections, or tumors. It's painless and generally quick.

91 services90 patients

Ct scan of blood vessels of head with contrast 70496

A CT scan of the head's blood vessels with contrast is a diagnostic procedure. A special dye (contrast) is injected into your body to make the blood vessels visible on the scan. This helps identify issues like blockages or abnormalities in your head's blood vessels.

89 services87 patients

Ct scan of blood vessels of neck with contrast 70498

A CT scan of the neck's blood vessels with contrast is a diagnostic procedure. It uses X-rays and a special dye to create detailed images of your neck's blood vessels. This helps doctors detect issues such as blockages or abnormalities.

82 services80 patients

Ct scan of head or brain before and after contrast 70470

A CT scan of the head or brain uses special X-ray equipment to create detailed images of your brain's structure. Before and after contrast means two scans are done. Initially, images are taken without a contrast dye. Then, a dye is given to highlight certain areas, providing a clearer picture.

74 services72 patients

Ct scan of middle spine without contrast 72128

A CT scan of the middle spine without contrast is a non-invasive imaging test. It uses X-rays to create detailed pictures of your mid-spine area. This scan helps doctors identify issues like fractures, tumors, or infections. No dye is used in this procedure.

61 services60 patients

Mri scan of blood vessels of neck with contrast 70548

An MRI scan of the neck with contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed pictures of your blood vessels in the neck. A contrast dye may be injected to make these images clearer. This helps identify any abnormalities.

45 services45 patients

Mri scan of lower spinal canal without contrast 72148

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

43 services43 patients

Mri scan of blood vessels of head without contrast 70544

An MRI scan of the head's blood vessels without contrast is a non-invasive imaging procedure. It uses a magnetic field and radio waves to create detailed images of the blood vessels in your head. This helps doctors diagnose conditions such as stroke, aneurysm, or other vascular disorders.

42 services42 patients

Nuclear medicine study of brain with metabolic evaluation 78608

A nuclear medicine study of the brain with metabolic evaluation involves using a safe radioactive substance and special imaging to assess brain function. It helps identify changes in brain metabolism that can indicate certain disorders.

36 services36 patients

Mri scan of upper spinal canal before and after contrast 72156

An MRI scan of the upper spinal canal before and after contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed images of your spine. Contrast dye is injected to enhance these images, providing clearer visuals for accurate diagnosis.

35 services33 patients

Mri scan of upper spinal canal without contrast 72141

An MRI scan of the upper spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your upper spine. This helps doctors identify issues such as injuries, infections or diseases. No dye is used.

32 services32 patients

Ct scan of face without contrast 70486

A CT scan of the face without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your face, including bones, soft tissues, and blood vessels. It's often used to diagnose diseases, injuries, or abnormalities. No contrast dye is used in this procedure.

30 services30 patients

Mri scan of lower spinal canal before and after contrast 72158

An MRI scan of the lower spinal canal with contrast is a non-invasive imaging procedure. It uses magnetic fields to generate detailed images of your lower spine. A contrast agent is injected to enhance these images, helping doctors see issues more clearly.

27 services26 patients

Mri scan of middle spinal canal before and after contrast 72157

An MRI scan of the middle spinal canal with contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your spine, both before and after a contrast dye is injected. The dye helps to highlight certain structures, providing a clearer picture for diagnosis.

23 services22 patients

Removal of spinal fluid with lower back spinal tap for diagnostic test using imaging guidance 62328

A lower back spinal tap, guided by imaging, is a procedure to collect spinal fluid for testing. A needle is carefully inserted into the lower back to draw out fluid. This can help diagnose various conditions. It's performed under local anesthesia to minimize discomfort.

21 services21 patients

Ct scan of soft tissue of neck with contrast 70491

A CT scan of the neck with contrast is a non-invasive imaging procedure. A special dye is administered to highlight the soft tissues in your neck, making them easier to see. This helps detect issues like infections, tumors, or other abnormalities.

18 services18 patients

Mri scan of middle spinal canal without contrast 72146

An MRI scan of the middle spinal canal without contrast is a non-invasive imaging test. It uses magnetic fields and radio waves to create detailed images of your spine. This helps doctors identify any abnormalities or issues in your spinal canal. No dye is used in this procedure.

17 services16 patients

Mri scan of bone of eye socket, face, and/or neck before and after contrast 70543

An MRI scan of the eye socket, face, and/or neck uses magnetic fields to create detailed images of these areas. Contrast dye helps highlight specific tissues for clearer pictures. It's non-invasive, aids in detecting abnormalities, and guides treatment plans.

15 services13 patients

Mri scan of blood vessels of head with contrast 70545

An MRI scan of the head's blood vessels with contrast is a non-invasive imaging test. A dye is injected to make blood vessels more visible. This helps to identify issues like blockages, aneurysms, or malformations. It's painless but may require you to stay still.

12 services12 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

86.25/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

Promoting Interoperability

100

Improvement Activities

Reported Quality Measures

Radiation Consideration for Adult CT: Utilization of Dose Lowering Techniques

100%748 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JASPREET SIAN M.D.

Student in an Organized Health Care Education/Training Program

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3540

BRANDON ROBERT MAY

Psychiatry & Neurology (Vascular Neurology)

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-6262

DR. JACOB WESLEY SANDERS

Student in an Organized Health Care Education/Training Program

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-6262

SANFORD ORNSTEIN M.D.

Radiology (Diagnostic Radiology)

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3430

LINDLEY T BLISS MD

Hospitalist

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 615-5672

DR. TILINA N. HU MD

Radiology (Diagnostic Radiology)

350 W THOMAS RD, RADIOLOGY DEPARTMENT
PHOENIX, AZ 85013

Maricopa County (602) 406-3430

JASON AARON BESTE M.D.

Hospitalist

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-5590

JOEL JAMES HAYDEN MD

Radiology (Diagnostic Radiology)

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3430

SARAH BAHSAS

Family Medicine

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3350

SANA RUKH MD

Anesthesiology

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3000

DR. JACOB CONNOR MATTHEWS MD

Student in an Organized Health Care Education/Training Program

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3000

HAN NGO

Student in an Organized Health Care Education/Training Program

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3000

STEWARDMED PLLC

Internal Medicine

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3000

KALIB CORREA

Registered Nurse (Critical Care Medicine)

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3121

CASSANDRA MARGARET BROWN DO

Student in an Organized Health Care Education/Training Program

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3000

AUGUSTUS MALAN

Student in an Organized Health Care Education/Training Program

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3000

DR. LOUIS RICHARD BLAS MD.

Specialist

350 W THOMAS RD, RADIOLOGY DEPT.
PHOENIX, AZ 85013

Maricopa County (602) 406-6700

DR. SHANE M BEZZANT M.D.

Radiology (Diagnostic Radiology)

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3430

DR. PETER HOANG M.D.

Radiology (Vascular & Interventional Radiology)

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3430

NAOMI KIS MD

Radiology (Diagnostic Radiology)

350 W THOMAS RD
PHOENIX, AZ 85013

Maricopa County (602) 406-3430

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Karis's NPI number?

The NPI number for John Karis is 1609841790. It was assigned to this individual provider in the NPPES registry on February 22, 2006.

Where is John Karis located?

John Karis practices at 350 W Thomas Rd, Phoenix, AZ 85013. The listed phone number is (602) 406-3000.

What is John Karis's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Neuroradiology, with taxonomy code 2085N0700X.

Is John Karis enrolled in Medicare?

Yes. John Karis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does John Karis accept?

Health plans from Blue Cross Blue Shield of Arizona list John Karis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Karis was last updated on October 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.