Dr. Randall P. Mason, MD
- Medicare services, 2019
- 29
- Part D claims, 2018
- 29
- Hospital affiliations
- 1
- Industry payments
- $126
- Medical group
- 1
- Practice address
- 350 North Wilmot Road, Tucson, AZ 85711
- Practice phone
- Call (520) 873-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Mason's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Randall P. Mason is an emergency medicine physician in Tucson, Arizona
Dr. Mason practices at St. Joseph's Hospital in Tucson, Arizona, part of Tenet Healthcare.
Dr. Mason's NPI, 1366442014, was assigned on July 22, 2005. Dr. Mason holds Arizona license 11045.
- NPI
- 1366442014NPI Registry (opens in a new tab)
- NPI enumeration date
- July 22, 2005
- NPI status
- Active
- Practice phone
- (520) 873-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Randall P. Mason practices at St. Joseph's Hospital in Tucson, Arizona
Dr. Mason's primary practice is St. Joseph's Hospital, at 350 North Wilmot Road, Tucson, AZ 85711 in Pima County. The practice phone is (520) 873-3000.
- St. Joseph's Hospital350 North Wilmot Road, Tucson, AZ 85711 · Pima CountyPhone(520) 873-3000
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Randall P. Mason is affiliated with 1 site of care and 1 medical group
Dr. Mason's primary practice is St. Joseph's Hospital in Tucson, Arizona, part of Tenet Healthcare. The medical group on file is Sound Physicians.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Randall P. Mason's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mason practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Joseph's Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Randall P. Mason is one of 1,360 emergency medicine physicians in Arizona
Emergency medicine is Dr. Mason's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Mason is licensed in Arizona.
Specialties and state licenses
- Emergency medicine, ArizonaPrimary
Emergency medicine physicians near Dr. Mason
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Randall P. Mason billed Medicare for 29 services in 2019
CMS data shows 29 Medicare services from Dr. Mason across 2 procedure codes in 2019. Medicare paid $3,088 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mason's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 572019: 2949%
Dr. Mason compared with the Arizona median for emergency medicine physicians, 2019
- Dr. Mason
- Arizona median
- Medicare services
- 29vs 21687% below
- Part D claims
- 29vs 5042% below
Medians across 1,326 emergency medicine physicians in Arizona with Dmand AI profiles that report each measure.
Dr. Mason's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mason and other emergency medicine physicians in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Randall P. Mason wrote 29 Medicare Part D claims in 2018
In 2018, Dr. Mason wrote 29 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $178 in total drug cost. In 2016, CMS named 51 claims across 3 drugs.
Dr. Mason's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2016 to 2018
- 2016
- 2018
- Claims for drugs CMS names
- 2016: 512018: 2943%
Drugs named by CMS: 2 in 2018, 3 in 2016.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Randall P. Mason received $126 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Mason from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Portola Pharmaceuticals, LLC paid the most, $126.
Companies that paid Dr. Mason the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Randall P. Mason's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Randall P. Mason
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Randall P. Mason's NPI number?
Dr. Randall P. Mason's NPI number is 1366442014. It was assigned on July 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Randall P. Mason?
Dr. Randall P. Mason is an emergency medicine physician in Tucson, Arizona. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Randall P. Mason practice?
Dr. Mason practices at 350 North Wilmot Road, Tucson, AZ 85711. Dr. Mason's primary practice is St. Joseph's Hospital in Tucson, Arizona, part of Tenet Healthcare.
What is Dr. Randall P. Mason's office phone number?
The practice phone on file for Dr. Mason is (520) 873-3000.
What is Dr. Randall P. Mason's medical license number?
Dr. Mason holds Arizona license 11045.
Which hospitals is Dr. Randall P. Mason affiliated with?
Dr. Mason practices at St. Joseph's Hospital in Tucson, Arizona.
What medical group is Dr. Randall P. Mason part of?
Dr. Mason is linked to Sound Physicians.
Does Dr. Randall P. Mason accept Medicare?
Yes. CMS data shows Dr. Mason billed Medicare for 29 services in 2019.
What services does Dr. Randall P. Mason bill to Medicare?
In 2019, Dr. Mason's most billed Medicare services were emergency department visit (99285) and emergency department visit (99284).
What drugs does Dr. Randall P. Mason prescribe most?
In 2018 Medicare Part D data, Dr. Mason's most prescribed drugs by claims were Prednisone and Cephalexin.
Has Dr. Randall P. Mason received payments from drug or device companies?
CMS Open Payments shows $126 in general payments to Dr. Mason from 1 company from 2019 to 2019. The largest total came from Portola Pharmaceuticals, LLC.
How long has Dr. Randall P. Mason been practicing?
Dr. Mason's NPI was assigned in 2005.
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