John David Mason, PA-C
- Medicare services, 2024
- 625
- Medicare patients, 2024
- 161
- Part D claims, 2024
- 139
- MIPS score, 2024
- 84
- Hospital affiliations
- 1
- Practice address
- 1515 Holcombe Blvd, Houston, TX 77030
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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John David Mason is a physician assistant in Houston, Texas
John Mason practices at The University of Texas MD Anderson Cancer Center in Houston, Texas, part of The University of Texas System.
John Mason's NPI, 1275720229, was assigned on October 3, 2007. John Mason holds Texas license PA05338.
- NPI
- 1275720229NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072696939
- NPI enumeration date
- October 3, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John David Mason practices at The University of Texas MD Anderson Cancer Center in Houston, Texas
John Mason's primary practice is The University of Texas MD Anderson Cancer Center, at 1515 Holcombe Blvd, Houston, TX 77030.
- The University of Texas MD Anderson Cancer Center1515 Holcombe Blvd, Houston, TX 77030
Source: Dmand AI Affiliation Data
John David Mason is affiliated with 1 site of care and 1 medical group
John Mason's primary practice is The University of Texas MD Anderson Cancer Center in Houston, Texas, part of The University of Texas System. The medical group on file is Physicians Referral Service.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John David Mason's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Mason practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The University of Texas MD Anderson Cancer Center | Available with a free account |
Source: Dmand AI Technology Install Data
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John David Mason is one of 8,663 physician assistants in Texas
Physician assistant is John Mason's primary specialty in the NPI Registry, under taxonomy code 363A00000X. John Mason is licensed in Texas.
Specialties and state licenses
- Physician assistant, TexasPrimary
Physician assistants near John Mason
Counts of physician assistants 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
John David Mason billed Medicare for 625 services in 2024
CMS data shows 625 Medicare services from John Mason across 2 procedure codes in 2024, for 161 Medicare patients. Medicare paid $32,521 for them. Every service was in a facility, such as a hospital, rather than an office.
John Mason compared with the Texas median for physician assistants, 2024
- John Mason
- Texas median
- Medicare services
- 625vs 2292.7 times
- Medicare patients
- 161vs 9963% above
- Part D claims
- 63vs 29679% below
Medians across 5,541 physician assistants in Texas with Dmand AI profiles that report each measure.
John Mason's most billed Medicare procedure codes, 2024
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
John David Mason treated 161 Medicare patients in 2024, average age 68
CMS counts 161 Medicare patients who saw John Mason in 2024. The largest group is 65 to 74, with 77 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 13% are also on Medicaid. Their average risk score is 3.47, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts John Mason's median patient age at 59, with 45% women.
John Mason's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
John Mason's Medicare patients by sex, 2024
- Women7547%
- Men8653%
Chronic conditions among John Mason's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Arthritis68%
- Anxiety63%
- Mood disorders57%
- Cancer56%
- Depression47%
- Ischemic heart disease46%
Share of Medicare patients with each condition. A patient can have several.
John Mason's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women45%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John David Mason wrote 139 Medicare Part D claims in 2024
In 2024, John Mason wrote 139 Medicare Part D claims for 87 patients. 89% of them were for generic drugs. CMS names the drug for 63 of them, across 3 drugs with 11 or more claims each, at $771 in total drug cost.
John Mason's Part D claims by kind of drug, 2024
- Generic124 claims89%
- Brand-name15 claims11%
John Mason's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in John Mason's Part D claims, 2024
- Opioids75%104 of 139 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
John David Mason scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for John Mason for performance year 2024, reported as part of a group. John Mason accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
John Mason's MIPS scores, performance year 2024
- 84of 100Final score
- 70.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 68of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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John David Mason received $65 in industry payments in 2024
CMS Open Payments shows 2 general payments to John Mason from 2 drug and device companies in 2024. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $46.
Companies that paid John Mason the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for John David 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 Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand 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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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 John David Mason
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What is John David Mason's NPI number?
John David Mason's NPI number is 1275720229. It was assigned on October 3, 2007, and it is active in the NPI Registry.
What does John David Mason specialize in?
John David Mason is a physician assistant in Houston, Texas. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does John David Mason practice?
John Mason practices at 1515 Holcombe Blvd, Houston, TX 77030. John Mason's primary practice is The University of Texas MD Anderson Cancer Center in Houston, Texas, part of The University of Texas System.
What is John David Mason's medical license number?
John Mason holds Texas license PA05338.
Which hospitals is John David Mason affiliated with?
John Mason practices at The University of Texas MD Anderson Cancer Center in Houston, Texas.
What medical group is John David Mason part of?
John Mason is linked to Physicians Referral Service.
Does John David Mason accept Medicare?
Yes. CMS data shows John Mason billed Medicare for 625 services in 2024, and John Mason accepts Medicare assignment.
What is John David Mason's MIPS score?
John Mason's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does John David Mason see?
CMS counts 161 Medicare patients who saw John Mason in 2024, with an average age of 68.
What services does John David Mason bill to Medicare?
In 2024, John Mason's most billed Medicare services were hospital inpatient care (99232) and hospital inpatient care (99231).
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What drugs does John David Mason prescribe most?
In 2024 Medicare Part D data, John Mason's most prescribed drugs by claims were Oxycodone HCl, Hydromorphone HCl and Hydrocodone-Acetaminophen.
Has John David Mason received payments from drug or device companies?
CMS Open Payments shows $65 in general payments to John Mason from 2 companies from 2024 to 2024. The largest total came from Genentech, Inc.
How long has John David Mason been practicing?
John Mason graduated from medical school in 2007, 19 years ago.
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