DR. CALLAN HANN MASON M.D.
NPI 1427315597
Radiology - Diagnostic Radiology in Oklahoma City, OK

Q: What is Callan Mason's NPI number?

The NPI number for Callan Mason is 1427315597. It was assigned to this individual provider in the NPPES registry on April 13, 2012. The provider is also known as Dr. Callan Leigh Hann M.D..

Q: What is Callan Mason's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Callan Mason was last updated on February 1, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since April 13, 2012PECOS EnrolledAccepts Medicare Assignment

97.34/100

CMS Quality Rating

4401 S WESTERN AVE, OKLAHOMA CITY, OK 73109(405) 632-2327 Get Directions Write a Review

NPPES record last updated: February 1, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 1, 2022, Jun 15, 2018 (2 updates tracked since 2018).

On this page

About Dr. Callan Hann Mason M.d. NPPES

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

DR. CALLAN HANN MASON M.D. (NPI 1427315597) is an individual diagnostic radiology provider in Oklahoma City, Oklahoma, licensed in Oklahoma (33484) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Oklahoma City, Inc, and maintains a secondary practice location in Dallas.

NPPES Registry Identity

NPI1427315597

Entity TypeIndividualFemale

Primary Taxonomy2085R0202X

Provider Legal NameDR. CALLAN HANN MASONCredential: M.D.

Location Address4401 S WESTERN AVEOklahoma City, OK 73109

Mailing Address3500 Gaston AveDallas, TX 75246-2017

Phone(405) 632-2327

Sole ProprietorNo

Medical School CMSOtherGraduated 2012

Enumeration DateApril 13, 2012

Last NPPES UpdateFebruary 1, 20222 updates tracked since enumeration

NPPES CertifiedFebruary 1, 2022

✔ NPI 1427315597 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in OK · 33484

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

4401 S WESTERN AVE, Oklahoma City, OK 73109

Open in Google Maps ↗

Other Names 1

Former Name (1)Dr. Callan Leigh Hann M.d.

Secondary Practice Location 1

Location 13500 Gaston AveDallas, TX 75246-2017 · Phone (214) 820-2361

Accepted Insurance

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

Dr. Callan Hann Mason 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 ID8022373257

PECOS Enrollment IDI20180517001365

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 Callan Mason reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Radiology Consultants, PC

13 mi

Diagnostic Radiology

4200 W MEMORIAL RD STE 212
Oklahoma City, OK 73120

Reassigned Medicare billing, Oklahoma enrollment
28 clinicians in this Medicare group

NPI 1528000288 (405) 242-2138

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 15

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 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.

1,802 services1,802 patients

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.

1,737 services1,737 patients

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

771 services771 patients

Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) G0279

Diagnostic digital breast tomosynthesis is a 3D imaging test that allows doctors to examine your breast tissue layer by layer. It's performed on one or both sides. It helps in detecting abnormalities more accurately. It's often done in addition to other tests.

246 services246 patients

Limited ultrasound scan of 1 breast 76642

A limited ultrasound scan of one breast is a non-invasive imaging test. It uses sound waves to create pictures of the inside of your breast. It helps identify any unusual growths or changes. It's safe, quick, and typically painless.

220 services218 patients

Diagnostic mammography of 1 breast 77065

Diagnostic mammography of 1 breast is a detailed imaging test that allows doctors to closely examine a specific area in the breast. It's often used when a routine screening reveals an abnormality. This test can help identify any unusual changes or issues.

193 services176 patients

Diagnostic mammography of both breasts 77066

Diagnostic mammography involves using special imaging technology to capture detailed images of both breasts. This procedure helps in identifying any unusual changes or abnormalities. It's a crucial step in ensuring breast health and early detection of potential issues.

176 services175 patients

Mri scan of both breasts 77049

An MRI scan of both breasts is a non-invasive procedure using magnetic fields and radio waves to create detailed images of your chest area. This aids in detecting any abnormalities, ensuring your health and well-being.

88 services86 patients

Biopsy of breast and placement of locating device using ultrasound, first growth 19083

A breast biopsy with locating device placement involves taking a small sample from an unusual growth, using ultrasound for precise targeting. This sample is studied for any abnormal cells. A locating device is also placed to mark the area for future reference.

48 services47 patients

Complete ultrasound scan of 1 breast 76641

A complete ultrasound scan of one breast is a non-invasive imaging test that uses sound waves to create detailed images of the inside of your breast. It helps in detecting any abnormalities or changes, ensuring your breast health.

47 services47 patients

Biopsy of breast and placement of locating device using x-ray with needle, first growth 19081

A biopsy of the breast involves extracting a small sample of tissue for examination. A locating device placement, guided by x-ray, aids in identifying the exact spot of the first growth. A needle is used in both processes to ensure precision and minimal discomfort.

38 services37 patients

X-ray of surgical specimen 76098

An X-ray of a surgical specimen involves taking detailed images of the tissue or organ removed during surgery. This helps in examining the specimen more closely to understand the disease better. It's a safe, non-invasive procedure, providing valuable insights to your healthcare team.

32 services30 patients

Limited ultrasound scan of joint or other extremity structure except blood vessels 76882

A limited ultrasound scan of a joint or other extremity structure lacking blood vessels is a non-invasive procedure that uses sound waves to create images of the inside of your body. This helps in diagnosing and monitoring conditions related to your joints or other similar structures.

19 services15 patients

Placement of soft tissue locating device using x-ray, first growth 10035

This procedure involves placing a device within the body's soft tissue to locate a specific growth. Using X-ray technology, the device is accurately positioned. This method aids in tracking the growth's changes, assisting in treatment decisions.

16 services16 patients

Needle biopsy or removal of surface lymph nodes 38505

A needle biopsy or removal of surface lymph nodes is a procedure where a small needle is inserted into a lymph node to collect a tissue sample. This sample is then examined under a microscope to check for diseases such as cancer. The procedure is usually quick and minimally invasive.

12 services12 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercy Hospital Oklahoma City, Inc

Acute Care Hospitals · Oklahoma City, OK

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number370013

Location4300 West Memorial RoadOklahoma City, OK 73120 · Oklahoma County

Emergency services Birthing friendly

Integris Baptist Medical Center, Inc

Acute Care Hospitals · Oklahoma City, OK

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number370028

Location3300 Northwest ExpresswayOklahoma City, OK 73112 · Oklahoma County

Emergency services Birthing friendly

Oklahoma Heart Hospital, LLC

Acute Care Hospitals · Oklahoma City, OK

4/5 CMS rating

OwnershipPhysician

CMS Certification Number370215

Location4050 West Memorial RoadOklahoma City, OK 73120 · Oklahoma County

Emergency services

Mercy Hospital Kingfisher, Inc

Critical Access Hospitals · Kingfisher, OK

OwnershipVoluntary non-profit - Private

CMS Certification Number371313

Location1000 Hospital DriveKingfisher, OK 73750 · Kingfisher County

Emergency services

Mercy Hospital Guthrie

Critical Access Hospitals · Guthrie, OK

OwnershipVoluntary non-profit - Private

CMS Certification Number371317

Location200 S Academy RdGuthrie, OK 73044 · Logan County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 73109 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

$82.46 typical visit price

range $53.00 – $162.61

Typical copayment $20.61 (range $13.25 – $40.65)

Most-billed visit code 99203

Established Patient

$66.48 typical visit price

range $16.68 – $132.40

Typical copayment $16.62 (range $4.17 – $33.10)

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.

97.34/100

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

Scored as part of a group practice

Quality

96.87

Improvement Activities

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. HUNTER DALE COOK D.O

Emergency Medicine

4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109

Oklahoma County (405) 636-7709

MARCIA R PALMER PA

Physician Assistant

4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109

Oklahoma County (405) 713-4740

DR. DAVID BRENNAN DO

Emergency Medicine

4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109

Oklahoma County (405) 636-7000

DR. LAUREN L. FITZGERALD MD

Anesthesiology

4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109

Oklahoma County (918) 392-2944

MS. JILL DIMOND MOORE MS, C.C.C.

Speech-Language Pathologist

4401 S WESTERN AVE, DEPT. 2004215
OKLAHOMA CITY, OK 73109

Oklahoma County (405) 636-7131

DR. JUSTIN ANDRE NALAGAN M.D.

Hospitalist

4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109

Oklahoma County (405) 713-7403

DAVID ALEXANDER ORBAN DO

Emergency Medicine

4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109

Oklahoma County (405) 636-7000

MATTHEW RAY WHITTAKER DO

Emergency Medicine

4401 S WESTERN AVE
OKLAHOMA CITY, OK 73109

Oklahoma County (405) 636-7195

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 Callan Mason's NPI number?

The NPI number for Callan Mason is 1427315597. It was assigned to this individual provider in the NPPES registry on April 13, 2012. The provider is also known as Dr. Callan Leigh Hann M.D..

Where is Callan Mason located?

Callan Mason practices at 4401 S Western Ave, Oklahoma City, OK 73109. The listed phone number is (405) 632-2327.

What is Callan Mason's specialty?

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

Is Callan Mason enrolled in Medicare?

Yes. Callan Mason 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 organization bills Medicare for Callan Mason's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Callan Mason reassigns Medicare benefits to Radiology Consultants, PC (Oklahoma City, OK). 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 Callan Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Callan Mason accept?

Health plans from Blue Cross and Blue Shield of Oklahoma list Callan Mason 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.

Is Callan Mason affiliated with any hospitals?

According to CMS data, Callan Mason is affiliated with Mercy Hospital Oklahoma City, Inc, Integris Baptist Medical Center, Inc, Oklahoma Heart Hospital, LLC, Mercy Hospital Kingfisher, Inc and Mercy Hospital Guthrie.

When was this NPI record last updated?

The NPPES record for Callan Mason was last updated on February 1, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.