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Dr. Santiago Hernandez, MD
NPI1801834007PAC ID2365574613
- Medicare services, 2024
- 794
- Medicare patients, 2024
- 225
- Part D claims, 2024
- 370
- Publications
- 1
- Hospital affiliations
- 3
- Practice address
- 700 South Park St, Madison, WI 53715
- Practice phone
- Call (608) 251-6100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hernandez'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. Santiago Hernandez is a hospitalist in Madison, Wisconsin
Dr. Hernandez practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care.
Dr. Hernandez's NPI, 1801834007, was assigned on June 2, 2006. Dr. Hernandez graduated from Un of California, Irvine, College of Medicine in 1998. Dr. Hernandez holds Wisconsin license 43740-020.
NPI and contact details
- NPI
- 1801834007NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2365574613
- NPI enumeration date
- June 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (608) 251-6100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Santiago Hernandez practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin
Dr. Hernandez's primary practice is SSM Health St. Mary's Hospital - Madison, at 700 South Park St, Madison, WI 53715 in Dane County. The practice phone is (608) 251-6100.
- SSM Health St. Mary's Hospital - Madison700 South Park St, Madison, WI 53715 · Dane CountyPhone(608) 251-6100
Source: Dmand AI Affiliation Data
Dr. Santiago Hernandez is affiliated with 4 sites of care and 1 medical group
Dr. Hernandez's primary practice is SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care. Dr. Hernandez is also affiliated with Stoughton Hospital. The medical group on file is SSM Health Dean Medical Group. Dmand AI also links Dr. Hernandez to 1 more hospital and 1 hospice, each named with a free account.
Stoughton HospitalSSM Health Dean Medical Group1 hospitalName with a free account1 hospiceName with a free account
See all 5 affiliations for Dr. HernandezSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Santiago Hernandez's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hernandez practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health St. Mary's Hospital - Madison | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Santiago Hernandez is one of 773 hospitalists in Wisconsin
Hospitalist is Dr. Hernandez's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Hernandez is licensed in Wisconsin.
Specialties and state licenses
- Hospitalist, WisconsinPrimary
Hospitalists near Dr. Hernandez
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
773hospitalists in Wisconsin155hospitalists in Madison37hospitalists at SSM Health St. Mary's Hospital - Madison
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Santiago Hernandez billed Medicare for 794 services in 2024
CMS data shows 794 Medicare services from Dr. Hernandez across 5 procedure codes in 2024, for 225 Medicare patients. Medicare paid $55,323 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024794
Medicare patients225
Paid by Medicare$55,323
Procedure codes5
Dr. Hernandez's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9952024: 79420%
Dr. Hernandez compared with the Wisconsin median for hospitalists, 2024
- Dr. Hernandez
- Wisconsin median
- Medicare services
- 794vs 3572.2 times
- Medicare patients
- 225vs 16536% above
- Part D claims
- 129vs 7865% above
Medians across 743 hospitalists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Hernandez'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hernandez and other hospitalists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Santiago Hernandez treated 225 Medicare patients in 2024, average age 75
CMS counts 225 Medicare patients who saw Dr. Hernandez in 2024. The largest group is 75 to 84, with 89 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 2.16, 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. Hernandez's median patient age at 74, with 49% women.
Medicare patients, 2024225
Average age75
Average risk score2.16
Also on Medicaid18%
Dr. Hernandez's Medicare patients by age, 2024
Dr. Hernandez's Medicare patients by sex, 2024
- Women11451%
- Men11149%
Chronic conditions among Dr. Hernandez's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes48%
- Heart failure47%
- Chronic kidney disease46%
- Ischemic heart disease44%
- Anxiety37%
- Arthritis37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hernandez's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Santiago Hernandez wrote 370 Medicare Part D claims in 2024
In 2024, Dr. Hernandez wrote 370 Medicare Part D claims for 137 patients. 81% of them were for generic drugs. CMS names the drug for 129 of them, across 8 drugs with 11 or more claims each, at $18,179 in total drug cost. In 2023, CMS named 132 claims across 9 drugs.
Part D claims, 2024370
Drugs named by CMS8
Total drug cost$18,179
Part D patients137
Dr. Hernandez's Part D claims by kind of drug, 2024
- Generic300 claims81%
- Brand-name and other70 claims19%
Dr. Hernandez'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. Hernandez's Part D claims, 2024
- Opioids3%11 of 370 claims
- Antibiotics12%43 of 370 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1322024: 1292%
Drugs named by CMS: 8 in 2024, 9 in 2023.
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
How Dr. Santiago Hernandez takes part in Medicare
Dr. Hernandez 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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Dr. Santiago Hernandez has 1 publication on record
Dmand AI links 1 paper to Dr. Hernandez in 2022.
Papers1
Recent publications by Dr. Hernandez
See who Dr. Hernandez researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hernandez works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Santiago Hernandez graduated from Un of California, Irvine, College of Medicine
Dr. Hernandez graduated from Un of California, Irvine, College of Medicine in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Santiago Hernandez'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Santiago Hernandez
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. Santiago Hernandez's NPI number?
Dr. Santiago Hernandez's NPI number is 1801834007. It was assigned on June 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Santiago Hernandez?
Dr. Santiago Hernandez is a hospitalist in Madison, Wisconsin. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Santiago Hernandez practice?
Dr. Hernandez practices at 700 South Park St, Madison, WI 53715. Dr. Hernandez's primary practice is SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin, part of SSM Health Care. Dmand AI also links Dr. Hernandez to 1 hospital and 1 hospice.
What is Dr. Santiago Hernandez's office phone number?
The practice phone on file for Dr. Hernandez is (608) 251-6100.
What is Dr. Santiago Hernandez's medical license number?
Dr. Hernandez holds Wisconsin license 43740-020.
Which hospitals is Dr. Santiago Hernandez affiliated with?
Dr. Hernandez practices at SSM Health St. Mary's Hospital - Madison in Madison, Wisconsin. Dr. Hernandez is also affiliated with Stoughton Hospital. Dmand AI links Dr. Hernandez to 1 more hospital.
What medical group is Dr. Santiago Hernandez part of?
Dr. Hernandez is linked to SSM Health Dean Medical Group.
Does Dr. Santiago Hernandez accept Medicare?
Yes. CMS data shows Dr. Hernandez billed Medicare for 794 services in 2024, and Dr. Hernandez accepts Medicare assignment.
How many Medicare patients does Dr. Santiago Hernandez see?
CMS counts 225 Medicare patients who saw Dr. Hernandez in 2024, with an average age of 75.
What services does Dr. Santiago Hernandez bill to Medicare?
In 2024, Dr. Hernandez's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
Show 4 more questionsShow fewer questions
Where did Dr. Santiago Hernandez go to medical school?
Dr. Hernandez graduated from Un of California, Irvine, College of Medicine in 1998.
What drugs does Dr. Santiago Hernandez prescribe most?
In 2024 Medicare Part D data, Dr. Hernandez's most prescribed drugs by claims were Metoprolol Tartrate, Potassium Chloride and Clopidogrel.
How long has Dr. Santiago Hernandez been practicing?
Dr. Hernandez graduated from medical school in 1998, 28 years ago.
Does Dr. Santiago Hernandez do research?
Dmand AI links 1 publication to Dr. Hernandez.
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