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MARK K ONO MD
NPI 1427022144
Radiology - Radiation Oncology in Scottsdale, AZ

Active since February 17, 2006PECOS EnrolledAccepts Medicare Assignment
PO BOX 4571, SCOTTSDALE, AZ 85261(480) 254-8613 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 11, 2025, May 14, 2024 (2 updates tracked since 2024).

About Mark K Ono Md NPPES

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

MARK K ONO MD (NPI 1427022144) is an individual radiation oncology provider in Scottsdale, Arizona, licensed in Arizona (34123) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Dover, and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (1990).

NPPES Registry Identity

NPI1427022144
Entity TypeIndividualMale
Primary Taxonomy2085R0001X
Provider Legal NameMARK K ONOCredential: MD
Location AddressPO BOX 4571Scottsdale, AZ 85261-4571
Mailing AddressPo Box 4571Scottsdale, AZ 85261-4571
Phone(480) 254-8613
Sole ProprietorNo
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 1990
Enumeration DateFebruary 17, 2006
Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 11, 2025
✔ NPI 1427022144 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
Licenses✔ Licensed in AZ · 34123✔ Licensed in DE · C1-0028619
Definition
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
PO BOX 4571, Scottsdale, AZ 85261
Open in Google Maps ↗

Secondary Practice Location 1

Location 1640 S State StDover, DE 19901-3530 · Phone (302) 744-7000

Other Identifiers 2

Medicaid949167AZ
OtherP00276752AZ · Railroad Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark K Ono 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 ID7911932215
PECOS Enrollment IDI20260201000080
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 Reassignments

9

Medicare enrollment records show Mark Ono reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ironwood Physicians, PC
14 mi
Hematology & Oncology
6111 E ARBOR AVE
Mesa, AZ 85206
  • Reassigned Medicare billing, Arizona enrollment
  • 148 clinicians in this Medicare group
NPI 1851912158 (480) 981-1326
Hendrick Provider Network
709 mi
Internal Medicine
1904 PINE ST, SUITE 200
Abilene, TX 79601
  • Reassigned Medicare billing, Texas enrollment
  • 420 clinicians in this Medicare group
NPI 1396961322 (325) 670-4220
Johnson Family Center For Cancer Care
1,537 mi
Oncology, Radiation
1440 E SHERMAN BLVD
Muskegon, MI 49444
  • Reassigned Medicare billing, Michigan enrollment
  • 22 clinicians in this Medicare group
NPI 1639368293 (231) 672-2008
Mercy Health Physicians Lorain Specialty Care LLC
1,708 mi
Surgery
3700 KOLBE RD
Lorain, OH 44053
  • Reassigned Medicare billing, Ohio enrollment
  • 227 clinicians in this Medicare group
NPI 1972126381 (440) 988-1009
Mercy Health Physicians Youngstown Specialty Care LLC
1,784 mi
Diagnostic Radiology
1932 NILES CORTLAND RD NE
Warren, OH 44484
  • Reassigned Medicare billing, Ohio enrollment
  • 744 clinicians in this Medicare group
NPI 1255009601 (330) 306-5300
Neo Urology Associates Inc
1,786 mi
Urology
7430 SOUTHERN BLVD
Boardman, OH 44512
  • Reassigned Medicare billing, Ohio enrollment
  • 27 clinicians in this Medicare group
NPI 1598798878 (330) 729-9214
Sjc Oncology Services - Georgia, LLC
1,789 mi
Radiation Oncology
225 CANDLER DRIVE, SUITE 100
Savannah, GA 31405
  • Reassigned Medicare billing, Georgia enrollment
  • 35 clinicians in this Medicare group
NPI 1710196589 (912) 352-1700
Bayhealth Medical Center, Inc
2,051 mi
Radiation Oncology
640 S STATE ST
Dover, DE 19901
  • Reassigned Medicare billing, Delaware enrollment
  • Also billed through NPI 1760949606 (Delaware)
  • 8 clinicians in this Medicare group
NPI 1841757739 (302) 744-7000
Bayhealth Radiologists LLC
2,051 mi
Diagnostic Radiology
640 S STATE ST
Dover, DE 19901
  • Reassigned Medicare billing, Arizona enrollment
  • 11 clinicians in this Medicare group
NPI 1366214124 (302) 744-7162

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85261 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
$168.60 typical visit price
range $55.44 – $168.60
Typical copayment $42.15 (range $13.86 – $42.15)
Most-billed visit code 99205
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.

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.

Reported Quality Measures

Breast Cancer Screening
Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer
66%210 patients3/55-star benchmark: 92%
Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
98%533 patients4/55-star benchmark: 100%
Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
54%426 patients3/55-star benchmark: 85%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
96%1,351 patients4/55-star benchmark: 100%
Health Information Exchange
The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…
47%239 patients2/55-star benchmark: 98%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
99%304 patients4/55-star benchmark: 100%
Oncology: Medical and Radiation - Pain Intensity Quantified
Percentage of patient visits, regardless of patient age, with a diagnosis of cancer currently receiving chemotherapy or radiation therapy in which pain intensity is quantified
95%279 patients4/55-star benchmark: 100%
Oncology: Medical and Radiation - Plan of Care for Pain
Percentage of visits for patients, regardless of age, with a diagnosis of cancer currently receiving chemotherapy or radiation therapy who report having pain with a documented plan of care to address pain
72%54 patients3/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
20%720 patients1/55-star benchmark: 100%
Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
76%534 patients4/55-star benchmark: 90%
Preventive Care and Screening: Influenza Immunization
Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization
54%412 patients3/55-star benchmark: 88%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients screenedForUse: 97% · 425 patients
Patients tobacco: 94% · 425 patients
64%50 patients3/55-star benchmark: 98%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
7%720 patients1/55-star benchmark: 100%
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.

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 Mark Ono's NPI number?

The NPI number for Mark Ono is 1427022144. It was assigned to this individual provider in the NPPES registry on February 17, 2006.

Where is Mark Ono located?

Mark Ono practices at PO Box 4571, Scottsdale, AZ 85261. The listed phone number is (480) 254-8613.

What is Mark Ono's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Mark Ono enrolled in Medicare?

Yes. Mark Ono 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.

Which organizations bill Medicare for Mark Ono's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Ono reassigns Medicare benefits to 9 organizations: Ironwood Physicians, PC (Mesa, AZ), Hendrick Provider Network (Abilene, TX), Johnson Family Center For Cancer Care (Muskegon, MI), Mercy Health Physicians Lorain Specialty Care LLC (Lorain, OH), Mercy Health Physicians Youngstown Specialty Care LLC (Warren, OH) and 4 more organizations, listed in the Medicare section above. Each 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 Mark Ono's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Ono accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, CareSource and MedMutual and 3 other insurers list Mark Ono 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 Mark Ono was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.