Dr. Jose A. Diaz Jr., MD
- Medicare services, 2024
- 1,340
- Medicare patients, 2024
- 171
- Part D claims, 2024
- 228
- MIPS score, 2024
- 95
- Hospital affiliations
- 4
- Practice address
- 12866 Troxler Avenue, Highland, IL 62249
- Practice phone
- Call (618) 651-2600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Diaz's professional email, personal email and mobile number
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Dr. Jose A. Diaz Jr. is a general surgeon in Highland, Illinois
Dr. Diaz practices at HSHS St. Joseph's Hospital Highland in Highland, Illinois, part of Hospital Sisters of St. Francis.
Dr. Diaz's NPI, 1982693271, was assigned on October 19, 2005. Dr. Diaz graduated from University of Missouri, Columbia School of Medicine in 1982. Dr. Diaz holds Illinois license 036.077861.
- NPI
- 1982693271NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395710941
- NPI enumeration date
- October 19, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (618) 651-2600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jose A. Diaz Jr. practices at HSHS St. Joseph's Hospital Highland in Highland, Illinois
Dr. Diaz's primary practice is HSHS St. Joseph's Hospital Highland, at 12866 Troxler Avenue, Highland, IL 62249 in Madison County. The practice phone is (618) 651-2600.
- HSHS St. Joseph's Hospital Highland12866 Troxler Avenue, Highland, IL 62249 · Madison CountyPhone(618) 651-2600
Source: Dmand AI Affiliation Data
Dr. Jose A. Diaz Jr. is affiliated with 7 sites of care and 3 medical groups
Dr. Diaz's primary practice is HSHS St. Joseph's Hospital Highland in Highland, Illinois, part of Hospital Sisters of St. Francis. Dr. Diaz is also affiliated with SSM Health Saint Louis University Hospital. The medical group on file is HSHS Medical Group. Dmand AI also links Dr. Diaz to 2 more hospitals, 2 home health agencies, 2 medical groups and 1 rural health 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 Dr. Jose A. Diaz Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diaz practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HSHS St. Joseph's Hospital Highland | Available with a free account |
| +6 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Hospital Sisters of St. Francis and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jose A. Diaz Jr. is one of 1,217 general surgeons in Illinois
Surgery is Dr. Diaz's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Diaz is licensed in Illinois.
Specialties and state licenses
- Surgery, IllinoisPrimary
General surgeons near Dr. Diaz
Counts of general surgeons 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. Jose A. Diaz Jr. billed Medicare for 1,340 services in 2024
CMS data shows 1,340 Medicare services from Dr. Diaz across 10 procedure codes in 2024, for 171 Medicare patients. Medicare paid $67,102 for them.
Dr. Diaz's Medicare services by type, 2024
- Surgery730
- Tests and treatments318
- Office and hospital visits292
Where Dr. Diaz's Medicare services took place, 2024
- In an office645%
- In a facility1,27695%
Dr. Diaz compared with the Illinois median for general surgeons, 2024
- Dr. Diaz
- Illinois median
- Medicare services
- 1,340vs 1946.9 times
- Medicare patients
- 171vs 14419% above
- Part D claims
- 188vs 286.7 times
Medians across 1,031 general surgeons in Illinois with Dmand AI profiles that report each measure.
Dr. Diaz'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
Dr. Jose A. Diaz Jr. treated 171 Medicare patients in 2024, average age 74
CMS counts 171 Medicare patients who saw Dr. Diaz in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 2.24, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Diaz's median patient age at 73, with 52% women.
Dr. Diaz's Medicare patients by age, 2024
Dr. Diaz's Medicare patients by sex, 2024
- Women8147%
- Men9053%
Chronic conditions among Dr. Diaz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Diabetes51%
- Chronic kidney disease50%
- Heart failure43%
- Ischemic heart disease42%
- Mood disorders35%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 73
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jose A. Diaz Jr. wrote 228 Medicare Part D claims in 2024
In 2024, Dr. Diaz wrote 228 Medicare Part D claims for 106 patients. 87% of them were for generic drugs. CMS names the drug for 188 of them, across 8 drugs with 11 or more claims each, at $8,900 in total drug cost.
Dr. Diaz's Part D claims by kind of drug, 2024
- Generic199 claims87%
- Brand-name29 claims13%
Dr. Diaz'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 Dr. Diaz's Part D claims, 2024
- Opioids15%35 of 228 claims
- Antibiotics59%135 of 228 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
Dr. Jose A. Diaz Jr. scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Diaz for performance year 2024, reported through an alternative payment model (APM). Dr. Diaz accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 651 procedures of removal of tissue by Dr. Diaz, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Diaz's MIPS scores, performance year 2024
- 95of 100Final score
- 86of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Diaz ranks in Medicare procedure volume
- Removal of tissue
- 98th percentile651 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Jose A. Diaz Jr. received $2,106 in industry payments from 2024 to 2025
CMS Open Payments shows 52 general payments to Dr. Diaz from 12 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 63% of the total. Intuitive Surgical, Inc. paid the most, $777.
General payments to Dr. Diaz by program year, 2024 to 2025
General payments to Dr. Diaz by kind, 2024 to 2025
- Food and beverage$1,32963%
- Travel and lodging$77737%
Companies that paid Dr. Diaz the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jose A. Diaz Jr. graduated from University of Missouri, Columbia School of Medicine
Dr. Diaz graduated from University of Missouri, Columbia School of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jose A. Diaz Jr.'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Jose A. Diaz Jr.
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. Jose A. Diaz Jr.'s NPI number?
Dr. Jose A. Diaz Jr.'s NPI number is 1982693271. It was assigned on October 19, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Jose A. Diaz Jr.?
Dr. Jose A. Diaz Jr. is a general surgeon in Highland, Illinois. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Jose A. Diaz Jr. practice?
Dr. Diaz practices at 12866 Troxler Avenue, Highland, IL 62249. Dr. Diaz's primary practice is HSHS St. Joseph's Hospital Highland in Highland, Illinois, part of Hospital Sisters of St. Francis. Dmand AI also links Dr. Diaz to 2 hospitals, 2 home health agencies, 2 medical groups and 1 rural health clinic.
What is Dr. Jose A. Diaz Jr.'s office phone number?
The practice phone on file for Dr. Diaz is (618) 651-2600.
What is Dr. Jose A. Diaz Jr.'s medical license number?
Dr. Diaz holds Illinois license 036.077861.
Which hospitals is Dr. Jose A. Diaz Jr. affiliated with?
Dr. Diaz practices at HSHS St. Joseph's Hospital Highland in Highland, Illinois. Dr. Diaz is also affiliated with SSM Health Saint Louis University Hospital. Dmand AI links Dr. Diaz to 2 more hospitals.
What medical group is Dr. Jose A. Diaz Jr. part of?
Dr. Diaz is linked to HSHS Medical Group. Dmand AI links Dr. Diaz to 2 more medical groups.
Does Dr. Jose A. Diaz Jr. accept Medicare?
Yes. CMS data shows Dr. Diaz billed Medicare for 1,340 services in 2024, and Dr. Diaz accepts Medicare assignment.
What is Dr. Jose A. Diaz Jr.'s MIPS score?
Dr. Diaz's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Jose A. Diaz Jr. see?
CMS counts 171 Medicare patients who saw Dr. Diaz in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Jose A. Diaz Jr. bill to Medicare?
In 2024, Dr. Diaz's most billed Medicare services were surgery: skin and soft tissue (11042), physical therapy and rehabilitation (97597) and surgery: skin and soft tissue (15271).
Where did Dr. Jose A. Diaz Jr. go to medical school?
Dr. Diaz graduated from University of Missouri, Columbia School of Medicine in 1982.
What drugs does Dr. Jose A. Diaz Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Diaz's most prescribed drugs by claims were Sulfamethoxazole-Trimethoprim, Doxycycline Hyclate and Santyl.
Has Dr. Jose A. Diaz Jr. received payments from drug or device companies?
CMS Open Payments shows $2,106 in general payments to Dr. Diaz from 12 companies from 2024 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Jose A. Diaz Jr. been practicing?
Dr. Diaz graduated from medical school in 1982, 44 years ago.
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