John David Mason, PA-C
- Medicare patients, 2024
- 172
- Part D claims, 2024
- 1,481
- MIPS score, 2024
- 74
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 5906 N Milwaukee Ave, Chicago, IL 60646
- Practice phone
- Call (773) 774-7300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fitsjoy Therapy
Physical Therapy Clinic · Chicago, Illinois
Find John 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.
John David Mason is a physician assistant in Chicago, Illinois
John Mason practices at Fitsjoy Therapy in Chicago, Illinois.
John Mason's NPI, 1811949118, was assigned on May 16, 2006. John Mason holds Illinois license 085-000630.
- NPI
- 1811949118NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921060690
- NPI enumeration date
- May 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (773) 774-7300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
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 Fitsjoy Therapy in Chicago, Illinois
John Mason's primary practice is Fitsjoy Therapy, at 5906 N Milwaukee Ave, Chicago, IL 60646. The practice phone is (773) 774-7300.
- Fitsjoy Therapy5906 N Milwaukee Ave, Chicago, IL 60646Phone(773) 774-7300
Source: Dmand AI Affiliation Data
John David Mason is affiliated with 6 sites of care and 2 medical groups
John Mason's primary practice is Fitsjoy Therapy in Chicago, Illinois. John Mason is also affiliated with Northwestern Medicine Central DuPage Hospital. The medical group on file is Jefferson Park Medical Group. Dmand AI also links John Mason to 2 more home health agencies, 1 group practice or clinic, 1 skilled nursing facility and 1 medical group, each named with a free account. John Mason's employer is on file too: a physical therapy & rehab clinic.
Source: Dmand AI Affiliation 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, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fitsjoy Therapy | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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John David Mason is one of 4,299 physician assistants in Illinois
Physician assistant is John Mason's primary specialty in the NPI Registry, under taxonomy code 363A00000X. John Mason is licensed in Illinois.
Specialties and state licenses
- Physician assistant, IllinoisPrimary
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 treated 172 Medicare patients in 2024, average age 79
CMS counts 172 Medicare patients who saw John Mason in 2024. The largest group is 85 and over, with 69 patients. 75% of them have high blood pressure, and 72% have mood disorders. 55% are also on Medicaid. Their average risk score is 2.04, 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 79, with 69% women.
John Mason's Medicare patients by age, 2024
John Mason's Medicare patients by sex, 2024
- Women12170%
- Men5130%
Chronic conditions among John Mason's Medicare patients, 2024
- High blood pressure75%
- Mood disorders72%
- High cholesterol70%
- Alzheimer's and dementia63%
- Depression63%
- Arthritis61%
- Anxiety58%
- Diabetes45%
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 79
Patient panel by sex, all payers
- Women69%
- Men29%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John David Mason wrote 1,481 Medicare Part D claims in 2024
In 2024, John Mason wrote 1,481 Medicare Part D claims for 113 patients. 93% of them were for generic drugs.
John Mason's Part D claims by kind of drug, 2024
- Generic1,378 claims93%
- Brand-name and other103 claims7%
Drug classes CMS tracks in John Mason's Part D claims, 2024
- Opioids6%88 of 1,481 claims
- Antibiotics2%36 of 1,481 claims
- Antipsychotics, patients 65 and over8%112 of 1,481 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
John David Mason scored 74 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 74 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. CMS lists John Mason as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
John Mason's MIPS scores, performance year 2024
- 74of 100Final score
- 0of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 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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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 Data |
| 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 (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) |
| 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
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John David Mason's NPI number?
John David Mason's NPI number is 1811949118. It was assigned on May 16, 2006, and it is active in the NPI Registry.
What does John David Mason specialize in?
John David Mason is a physician assistant in Chicago, Illinois. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does John David Mason practice?
John Mason practices at 5906 N Milwaukee Ave, Chicago, IL 60646. John Mason's primary practice is Fitsjoy Therapy in Chicago, Illinois. Dmand AI also links John Mason to 2 home health agencies, 1 group practice or clinic, 1 skilled nursing facility and 1 medical group.
What is John David Mason's office phone number?
The practice phone on file for John Mason is (773) 774-7300.
What is John David Mason's medical license number?
John Mason holds Illinois license 085-000630.
Which hospitals is John David Mason affiliated with?
John Mason is affiliated with Northwestern Medicine Central DuPage Hospital.
What medical group is John David Mason part of?
John Mason is linked to Jefferson Park Medical Group. Dmand AI links John Mason to 1 more medical group.
Does John David Mason accept Medicare?
Yes. CMS lists John Mason as accepting Medicare assignment.
Does John David Mason offer telehealth?
Yes. The CMS Doctors and Clinicians file lists John Mason as offering telehealth services.
What is John David Mason's MIPS score?
John Mason's MIPS final score for performance year 2024 is 74 out of 100, reported as part of a group.
How many Medicare patients does John David Mason see?
CMS counts 172 Medicare patients who saw John Mason in 2024, with an average age of 79.
How long has John David Mason been practicing?
John Mason graduated from medical school in 1991, 35 years ago.
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