Mark Jason Diaz, MPH, MS, PA-C
- Medicare patients, 2024
- 112
- Part D claims, 2024
- 258
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 1 Quality Drive, Vacaville, CA 95688
- Practice phone
- Call (707) 624-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Mark Diaz'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.
Mark Jason Diaz is a physician assistant in Vacaville, California
Mark Diaz practices at Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente.
Mark Diaz's NPI, 1164942116, was assigned on June 21, 2017. Mark Diaz holds California license 54564.
- NPI
- 1164942116NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8426320698
- NPI enumeration date
- June 21, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 624-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark Jason Diaz practices at Vacaville Medical Center in Vacaville, California
Mark Diaz's primary practice is Vacaville Medical Center, at 1 Quality Drive, Vacaville, CA 95688 in Solano County. The practice phone is (707) 624-4000.
- Vacaville Medical Center1 Quality Drive, Vacaville, CA 95688 · Solano CountyPhone(707) 624-4000
Source: Dmand AI Affiliation Data
Mark Jason Diaz is affiliated with 3 sites of care and 1 medical group
Mark Diaz's primary practice is Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Mark Diaz to 1 more clinical lab and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mark Jason Diaz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Diaz practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vacaville Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Jason Diaz is one of 11,482 physician assistants in California
Physician assistant is Mark Diaz's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Mark Diaz is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Mark Diaz
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
Mark Jason Diaz treated 112 Medicare patients in 2024, average age 75
CMS counts 112 Medicare patients who saw Mark Diaz in 2024. The largest group is 65 to 74, with 48 patients. 75% of them have arthritis, and 63% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Diaz's median patient age at 52, with 50% women.
Mark Diaz's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Mark Diaz's Medicare patients by sex, 2024
- Women7264%
- Men4036%
Chronic conditions among Mark Diaz's Medicare patients, 2024
- Arthritis75%
- High cholesterol63%
- High blood pressure56%
- Mood disorders28%
- Chronic kidney disease27%
- Ischemic heart disease24%
- Depression23%
- Osteoporosis23%
Share of Medicare patients with each condition. A patient can have several.
Mark Diaz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark Jason Diaz wrote 258 Medicare Part D claims in 2024
In 2024, Mark Diaz wrote 258 Medicare Part D claims for 93 patients. 99% of them were for generic drugs.
Mark Diaz's Part D claims by kind of drug, 2024
- Generic255 claims99%
- Brand-name and other3 claims1%
Drug classes CMS tracks in Mark Diaz's Part D claims, 2024
- Opioids46%119 of 258 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
How Mark Jason Diaz takes part in Medicare
Mark Diaz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Mark Jason Diaz'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 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) |
| 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 Mark Jason Diaz
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark Jason Diaz's NPI number?
Mark Jason Diaz's NPI number is 1164942116. It was assigned on June 21, 2017, and it is active in the NPI Registry.
What does Mark Jason Diaz specialize in?
Mark Jason Diaz is a physician assistant in Vacaville, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Mark Jason Diaz practice?
Mark Diaz practices at 1 Quality Drive, Vacaville, CA 95688. Mark Diaz's primary practice is Vacaville Medical Center in Vacaville, California, part of Kaiser Permanente. Dmand AI also links Mark Diaz to 1 clinical lab and 1 group practice or clinic.
What is Mark Jason Diaz's office phone number?
The practice phone on file for Mark Diaz is (707) 624-4000.
What is Mark Jason Diaz's medical license number?
Mark Diaz holds California license 54564.
Which hospitals is Mark Jason Diaz affiliated with?
Mark Diaz practices at Vacaville Medical Center in Vacaville, California.
What medical group is Mark Jason Diaz part of?
Mark Diaz is linked to The Permanente Medical Group, Inc.
Does Mark Jason Diaz accept Medicare?
Yes. CMS lists Mark Diaz as accepting Medicare assignment.
How many Medicare patients does Mark Jason Diaz see?
CMS counts 112 Medicare patients who saw Mark Diaz in 2024, with an average age of 75.
How long has Mark Jason Diaz been practicing?
Mark Diaz graduated from medical school in 2017, 9 years ago.
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