Dr. Michael J. Santiago, MD
- Medicare services, 2024
- 664
- Medicare patients, 2024
- 247
- Part D claims, 2024
- 128
- MIPS score, 2024
- 86
- Hospital affiliations
- 1
- Practice address
- 5777 East Mayo Boulevard, Phoenix, AZ 85054
- Practice phone
- Call (480) 342-4201
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Santiago'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. Michael J. Santiago is a hospitalist in Phoenix, Arizona
Dr. Santiago practices at Mayo Clinic Hospital - Phoenix in Phoenix, Arizona, part of Mayo Clinic.
Dr. Santiago's NPI, 1649254111, was assigned on November 30, 2005. Dr. Santiago graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1985. Dr. Santiago holds Arizona license 28913.
- NPI
- 1649254111NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274664461
- NPI enumeration date
- November 30, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (480) 342-4201
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael J. Santiago practices at Mayo Clinic Hospital - Phoenix in Phoenix, Arizona
Dr. Santiago's primary practice is Mayo Clinic Hospital - Phoenix, at 5777 East Mayo Boulevard, Phoenix, AZ 85054 in Maricopa County. The practice phone is (480) 342-4201.
- Mayo Clinic Hospital - Phoenix5777 East Mayo Boulevard, Phoenix, AZ 85054 · Maricopa CountyPhone(480) 342-4201
Source: Dmand AI Affiliation Data
Dr. Michael J. Santiago is affiliated with 1 site of care and 1 medical group
Dr. Santiago's primary practice is Mayo Clinic Hospital - Phoenix in Phoenix, Arizona, part of Mayo Clinic. The medical group on file is Mayo Clinic Arizona.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael J. Santiago's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Santiago practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Hospital - Phoenix | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael J. Santiago is one of 720 hospitalists in Arizona
Hospitalist is Dr. Santiago's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dmand AI has Dr. Santiago's licenses on file in 2 states: Arizona and California.
Specialties and state licenses
- Hospitalist, ArizonaPrimary
- California license
Hospitalists near Dr. Santiago
Counts of hospitalists 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. Michael J. Santiago billed Medicare for 664 services in 2024
CMS data shows 664 Medicare services from Dr. Santiago across 4 procedure codes in 2024, for 247 Medicare patients. Medicare paid $57,738 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Santiago's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7132024: 6647%
Dr. Santiago compared with the Arizona median for hospitalists, 2024
- Dr. Santiago
- Arizona median
- Medicare services
- 664vs 51230% above
- Medicare patients
- 247vs 245Close to median
- Part D claims
- 11vs 9488% below
Medians across 617 hospitalists in Arizona with Dmand AI profiles that report each measure.
Dr. Santiago'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. Santiago and other hospitalists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael J. Santiago treated 247 Medicare patients in 2024, average age 78
CMS counts 247 Medicare patients who saw Dr. Santiago in 2024. The largest group is 75 to 84, with 98 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 2.94, 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. Santiago's median patient age at 75, with 54% women.
Dr. Santiago's Medicare patients by age, 2024
Dr. Santiago's Medicare patients by sex, 2024
- Women11747%
- Men13053%
Chronic conditions among Dr. Santiago's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis68%
- Chronic kidney disease51%
- Ischemic heart disease45%
- Mood disorders45%
- Heart failure44%
- Atrial fibrillation41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Santiago's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael J. Santiago wrote 128 Medicare Part D claims in 2024
In 2024, Dr. Santiago wrote 128 Medicare Part D claims for 66 patients. 91% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $75 in total drug cost. In 2017, CMS named 12 claims across 1 drug.
Dr. Santiago's Part D claims by kind of drug, 2024
- Generic117 claims91%
- Brand-name11 claims9%
Dr. Santiago's most prescribed drugs by claims, 2018
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. Santiago's Part D claims, 2024
- Antibiotics37%47 of 128 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, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 122018: 118%
Drugs named by CMS: 1 in 2018, 1 in 2017.
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. Michael J. Santiago scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Santiago for performance year 2024, reported as part of a group. Dr. Santiago accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Santiago's MIPS scores, performance year 2024
- 86of 100Final score
- 78.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Upper gastrointestinal (GI) endoscopy for acid reflux: 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. Michael J. Santiago received $27 in industry payments in 2022
CMS Open Payments shows 1 general payment to Dr. Santiago from 1 drug or device company in 2022. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $27.
Companies that paid Dr. Santiago the most, 2022 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael J. Santiago graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Santiago graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael J. Santiago'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. Michael J. Santiago
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. Michael J. Santiago's NPI number?
Dr. Michael J. Santiago's NPI number is 1649254111. It was assigned on November 30, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael J. Santiago?
Dr. Michael J. Santiago is a hospitalist in Phoenix, Arizona. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Michael J. Santiago practice?
Dr. Santiago practices at 5777 East Mayo Boulevard, Phoenix, AZ 85054. Dr. Santiago's primary practice is Mayo Clinic Hospital - Phoenix in Phoenix, Arizona, part of Mayo Clinic.
What is Dr. Michael J. Santiago's office phone number?
The practice phone on file for Dr. Santiago is (480) 342-4201.
What is Dr. Michael J. Santiago's medical license number?
Dr. Santiago holds Arizona license 28913, one of the licenses on file in 2 states.
Which states has Dr. Michael J. Santiago been licensed in?
Dmand AI has state licenses on file for Dr. Santiago in Arizona and California.
Which hospitals is Dr. Michael J. Santiago affiliated with?
Dr. Santiago practices at Mayo Clinic Hospital - Phoenix in Phoenix, Arizona.
What medical group is Dr. Michael J. Santiago part of?
Dr. Santiago is linked to Mayo Clinic Arizona.
Does Dr. Michael J. Santiago accept Medicare?
Yes. CMS data shows Dr. Santiago billed Medicare for 664 services in 2024, and Dr. Santiago accepts Medicare assignment.
What is Dr. Michael J. Santiago's MIPS score?
Dr. Santiago's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Michael J. Santiago see?
CMS counts 247 Medicare patients who saw Dr. Santiago in 2024, with an average age of 78.
What services does Dr. Michael J. Santiago bill to Medicare?
In 2024, Dr. Santiago's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99232).
Where did Dr. Michael J. Santiago go to medical school?
Dr. Santiago graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1985.
What drugs does Dr. Michael J. Santiago prescribe most?
In 2018 Medicare Part D data, Dr. Santiago's most prescribed drugs by claims were Quetiapine Fumarate.
Has Dr. Michael J. Santiago received payments from drug or device companies?
CMS Open Payments shows $27 in general payments to Dr. Santiago from 1 company from 2022 to 2022. The largest total came from Abbvie Inc.
How long has Dr. Michael J. Santiago been practicing?
Dr. Santiago graduated from medical school in 1985, 41 years ago.
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