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JOHN JOSEPH OCONNOR MD
NPI 1437157203
General Practice in Prescott, AZ

Active since July 14, 2005PECOS Enrolled
3109 CLEARWATER DRIVE, STE A, PRESCOTT, AZ 86305(928) 778-1066(928) 778-7270 Get Directions Write a Review

NPPES record last updated: September 3, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About John Joseph Oconnor Md NPPES

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

JOHN JOSEPH OCONNOR MD (NPI 1437157203) is an individual general practice provider in Prescott, Arizona, licensed in Arizona (25148) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Chicago, Pritzker School Of Medicine (1986).

NPPES Registry Identity

NPI1437157203
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameJOHN JOSEPH OCONNORCredential: MD
Location Address3109 CLEARWATER DRIVE, STE APrescott, AZ 86305
Mailing Address3109 Clearwater Drive, Ste APrescott, AZ 86305 · (928) 778-1066 · Fax (928) 778-7270
Phone(928) 778-1066
Fax(928) 778-7270
Sole ProprietorYes
Medical School CMSUniversity Of Chicago, Pritzker School Of MedicineGraduated 1986
Enumeration DateJuly 14, 2005
Last NPPES UpdateSeptember 3, 2013
✔ NPI 1437157203 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in AZ · 25148
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
3109 CLEARWATER DRIVE, Prescott, AZ 86305
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Other Identifiers 3

Medicare ID-Type Unspecified25111AZ
Medicaid379877AZ
Medicare UPINF26230

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John Joseph Oconnor Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4486696028
PECOS Enrollment IDI20050524001234
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.

Medicare Billing Reassignment

Medicare enrollment records show John Oconnor reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Yavapai Community Hospital Association
2.5 mi
Surgery
804 AINSWORTH DRIVE STE. 103
Prescott, AZ 86301
  • Reassigned Medicare billing, Arizona enrollment
  • 83 clinicians in this Medicare group
NPI 1649464454 (928) 445-2700

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 9

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.

Needle measurement of electrical activity in arm or leg muscles, complete study 95886
This procedure, known as an electromyography (EMG), involves inserting a small needle into your arm or leg muscles to measure their electrical activity. This complete study helps diagnose issues with nerves or muscles, providing valuable data for your treatment plan.
769 services466 patients
Nerve conduction, 7-8 studies 95910
Nerve conduction studies involve testing the speed and strength of signals traveling through your nerves. This helps doctors identify nerve damage. In a 7-8 study procedure, 7-8 specific nerves are tested. You may feel a mild, brief tingling or shock during the test.
260 services258 patients
Nerve conduction, 3-4 studies 95908
Nerve conduction studies are tests that measure how well your nerves are working. In a 3-4 studies procedure, electrical signals are sent through 3-4 nerves. The speed and strength of the signal's travel is recorded to detect any nerve damage or dysfunction.
108 services107 patients
Needle measurement of electrical activity in arm or leg muscles, limited study 95885
This procedure, known as an electromyography (EMG), involves placing tiny needles into your arm or leg muscles to measure their electrical activity. It's a limited study, meaning only specific muscles are tested. This helps identify any muscle or nerve dysfunction.
87 services52 patients
Nerve conduction, 5-6 studies 95909
Nerve conduction studies involve testing the speed and strength of signals traveling through your nerves. This helps identify any nerve damage or dysfunction. For 5-6 studies, this means multiple nerves will be tested. Small electrodes are placed on your skin to send and receive signals, causing minimal discomfort.
82 services82 patients
Nerve conduction, 9-10 studies 95911
Nerve conduction studies involve sending small electrical shocks through the skin to measure how quickly nerves transmit signals. This helps detect nerve damage. 9-10 studies mean this process will be repeated on different nerves to gather comprehensive data.
74 services74 patients

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 Oconnor's NPI number?

The NPI number for John Oconnor is 1437157203. It was assigned to this individual provider in the NPPES registry on July 14, 2005.

Where is John Oconnor located?

John Oconnor practices at 3109 Clearwater Drive Ste A, Prescott, AZ 86305. The listed phone number is (928) 778-1066.

What is John Oconnor's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is John Oconnor enrolled in Medicare?

Yes. John Oconnor is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Oconnor's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Oconnor reassigns Medicare benefits to Yavapai Community Hospital Association (Prescott, AZ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Oconnor's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Oconnor accept?

Health plans from Blue Cross Blue Shield of Arizona and Imperial Insurance Companies, Inc. list John Oconnor 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 Oconnor was last updated on September 3, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.