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JAMES NATHANIEL MASON D.O.
NPI 1114362001
Internal Medicine - Hematology & Oncology in Ogden, UT

Active since May 06, 2013PECOS EnrolledAccepts Medicare Assignment
4403 HARRISON BLVD STE 1670, OGDEN, UT 84403(801) 387-7150 Get Directions Write a Review

NPPES record last updated: July 16, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 16, 2022, Jul 2, 2019 (2 updates tracked since 2019).

About James Nathaniel Mason D.o. NPPES

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

JAMES NATHANIEL MASON D.O. (NPI 1114362001) is an individual hematology & oncology provider in Ogden, Utah, licensed in Texas (Q8954) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS, is affiliated with Baylor Scott & White Medical Center - Temple, and maintains a secondary practice location in Temple.

NPPES Registry Identity

NPI1114362001
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameJAMES NATHANIEL MASONCredential: D.O.
Location Address4403 HARRISON BLVD STE 1670Ogden, UT 84403-3306
Mailing AddressPo Box 844658Dallas, TX 75284-4658
Phone(801) 387-7150
Sole ProprietorNo
Medical School CMSOklahoma State University College Of Osteopathic MedicineGraduated 2013
Enumeration DateMay 6, 2013
Last NPPES UpdateJuly 16, 20252 updates tracked since enumeration
NPPES CertifiedJuly 16, 2025
✔ NPI 1114362001 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in TX · Q8954
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
4403 HARRISON BLVD STE 1670, Ogden, UT 84403
Open in Google Maps ↗

Secondary Practice Location 1

Location 12401 S 31st StTemple, TX 76508-0001 · Phone (254) 724-2111

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Select Health.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

James Nathaniel Mason D.o. 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 ID7810276375
PECOS Enrollment IDI20250721003723
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 6

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
244 services123 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
171 services53 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
117 services35 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
43 services39 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
24 services24 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
19 services19 patients

Hospital Affiliations CMS Care Compare 3

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

Baylor Scott & White Medical Center - Temple

Acute Care Hospitals · Temple, TX
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450054
Location2401 S 31st StTemple, TX 76508 · Bell County
Emergency services Birthing friendly

Mckay-Dee Hospital

Acute Care Hospitals · Ogden, UT
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number460004
Location4401 Harrison BoulevardOgden, UT 84403 · Weber County
Emergency services Birthing friendly

Intermountain Health Layton Hospital

Acute Care Hospitals · Layton, UT
OwnershipVoluntary non-profit - Private
CMS Certification Number460061
Location201 West Layton ParkwayLayton, UT 84041 · Davis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 84403 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
$166.03 typical visit price
range $54.34 – $166.03
Typical copayment $41.50 (range $13.58 – $41.50)
Most-billed visit code 99205
Established Patient
$96.35 typical visit price
range $17.23 – $135.20
Typical copayment $24.08 (range $4.30 – $33.80)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Capecitabine, oral, 500 mg J8521
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier12 claims336 services$0.73 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

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

DEANNA LEIGH BOJANOWER APRN-BC
Nurse Practitioner
4403 HARRISON BLVD STE 1670
OGDEN, UT 84403
Weber County (801) 387-7150
EASTON ROBERTS
Nurse Practitioner (Acute Care)
4403 HARRISON BLVD STE 1670
OGDEN, UT 84403
Weber County (801) 387-7150

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 James Mason's NPI number?

The NPI number for James Mason is 1114362001. It was assigned to this individual provider in the NPPES registry on May 6, 2013.

Where is James Mason located?

James Mason practices at 4403 Harrison Blvd Ste 1670, Ogden, UT 84403. The listed phone number is (801) 387-7150.

What is James Mason's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is James Mason enrolled in Medicare?

Yes. James 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.

What insurance does James Mason accept?

Health plans from Select Health list James 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 James Mason affiliated with any hospitals?

According to CMS data, James Mason is affiliated with Baylor Scott & White Medical Center - Temple, Mckay-Dee Hospital and Intermountain Health Layton Hospital.

When was this NPI record last updated?

The NPPES record for James Mason was last updated on July 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.