PROF. JOHN RAMSEY WARFIELD MD.
NPI 1225118151
Radiology - Diagnostic Radiology in Phoenix, AZ

Active since October 16, 2006PECOS EnrolledAccepts Medicare Assignment
4212 N 16TH ST, PHOENIX, AZ 85016(602) 263-1200(602) 200-5383 Get Directions Write a Review

NPPES record last updated: August 29, 2011. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Prof. John Ramsey Warfield Md. NPPES

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

PROF. JOHN RAMSEY WARFIELD MD. (NPI 1225118151) is an individual diagnostic radiology provider in Phoenix, Arizona, licensed in Pennsylvania (MD044853E) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Maryland School Of Medicine (1972).

NPPES Registry Identity

NPI1225118151
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NamePROF. JOHN RAMSEY WARFIELDCredential: MD.
Location Address4212 N 16TH STPhoenix, AZ 85016-5319
Mailing AddressPo Box 31001-0698Pasadena, CA 91110-0698 · (602) 263-1200 · Fax (602) 200-5383
Fax(602) 200-5383
Sole ProprietorNo
Medical School CMSUniversity Of Maryland School Of MedicineGraduated 1972
Enumeration DateOctober 16, 2006
Last NPPES UpdateAugust 29, 2011
NPI 1225118151 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License Licensed in PA · MD044853E
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
4212 N 16TH ST, Phoenix, AZ 85016

Other Identifiers 5

Medicare UPIND77925AZ
Medicaid749616AZ
OtherAZ0740260AZ · Bcbs
Medicare OSCAR/certification030078AZ
Medicare PIN8HBE17AZ

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

Prof. John Ramsey Warfield Md. 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 ID42345647
PECOS Enrollment IDI20100322000552
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 18

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.

Screening 3d breast mammography 77063
Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.
127 services127 patients
Screening mammography 77067
Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.
126 services126 patients
X-ray of chest, 2 views 71046
A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.
69 services61 patients
X-ray of foot, minimum of 3 views 73630
An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.
55 services39 patients
X-ray of knee, 1-2 views 73560
An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.
38 services31 patients
X-ray of shoulder, minimum of 2 views 73030
An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.
37 services31 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85016 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$85.89 typical visit price
range $55.44 – $168.60
Typical copayment $21.47 (range $13.86 – $42.15)
Most-billed visit code 99203
Established Patient
$69.24 typical visit price
range $17.72 – $137.41
Typical copayment $17.31 (range $4.43 – $34.35)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Registered Nurse (Obstetric, High-Risk)
4212 N 16TH ST
PHOENIX, AZ 85016
Registered Nurse
4212 N 16TH ST
PHOENIX, AZ 85016
Family Medicine
4212 N 16TH ST
PHOENIX, AZ 85016
Registered Nurse
4212 N 16TH ST
PHOENIX, AZ 85016
Pharmacist
4212 N 16TH ST
PHOENIX, AZ 85016
Pharmacist
4212 N 16TH ST
PHOENIX, AZ 85016
Internal Medicine
4212 N 16TH ST
PHOENIX, AZ 85016
Registered Nurse
4212 N 16TH ST
PHOENIX, AZ 85016

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 Warfield's NPI number?

The NPI number for John Warfield is 1225118151. It was assigned to this individual provider in the NPPES registry on October 16, 2006.

Where is John Warfield located?

John Warfield practices at 4212 N 16th St, Phoenix, AZ 85016. The listed phone number is (602) 263-1200.

What is John Warfield's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is John Warfield enrolled in Medicare?

Yes. John Warfield 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.

When was this NPI record last updated?

The NPPES record for John Warfield was last updated on August 29, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.