Santiago A. Ulloa Ramirez
- Medicare services, 2024
- 14
- Medicare patients, 2024
- 22
- Part D claims, 2024
- 303
- Hospital affiliations
- 1
- Industry payments
- $320
- Practice address
- Pda. 20 C/ San Rafael # 1395, Santurce, PR 00909
- Practice phone
- Call (787) 723-2950
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Santiago A. Ulloa Ramirez is a general surgeon in San Juan, Puerto Rico
Santiago Ulloa Ramirez practices at Doctors' Center Hospital Orlando Health - San Juan in Santurce, Puerto Rico, part of Orlando Health.
Santiago Ulloa Ramirez's NPI, 1619074960, was assigned on September 20, 2006. Santiago Ulloa Ramirez holds Puerto Rico license 10722.
- NPI
- 1619074960NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981613650
- NPI enumeration date
- September 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (787) 723-2950
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Santiago A. Ulloa Ramirez practices in Santurce and San Juan
Santiago Ulloa Ramirez's primary practice is Doctors' Center Hospital Orlando Health - San Juan, at Pda. 20 C/ San Rafael # 1395, Santurce, PR 00909 in San Juan County. The practice phone is (787) 723-2950. Santiago Ulloa Ramirez also practices at Doctors Center Hospital San Juan, 1395 Calle San Rafael, San Juan, PR 00909.
- Doctors' Center Hospital Orlando Health - San JuanPrimaryPda. 20 C/ San Rafael # 1395, Santurce, PR 00909 · San Juan CountyPhone(787) 723-2950
- Doctors Center Hospital San Juan1395 Calle San Rafael, San Juan, PR 00909 · San Juan CountyPhone(787) 723-2950
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Santiago A. Ulloa Ramirez is affiliated with 1 site of care
Santiago Ulloa Ramirez's primary practice is Doctors' Center Hospital Orlando Health - San Juan in Santurce, Puerto Rico, part of Orlando Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Santiago A. Ulloa Ramirez's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Santiago Ulloa Ramirez practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Doctors' Center Hospital Orlando Health - San Juan | Available with a free account |
Source: Dmand AI Technology Install Data
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Santiago A. Ulloa Ramirez is one of 168 general surgeons in Puerto Rico
Surgery is Santiago Ulloa Ramirez's primary specialty in the NPI Registry, under taxonomy code 208600000X. Santiago Ulloa Ramirez is licensed in Puerto Rico.
Specialties and state licenses
- Surgery, Puerto RicoPrimary
General surgeons near Santiago Ulloa Ramirez
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
Santiago A. Ulloa Ramirez billed Medicare for 14 services in 2024
CMS data shows 14 Medicare services from Santiago Ulloa Ramirez across 1 procedure code in 2024, all of them office visits, for 22 Medicare patients. Medicare paid $1,052 for them. Every service was in an office.
Santiago Ulloa Ramirez's Medicare services by type, 2022 to 2024
- 2022
- 2024
- Office and hospital visits
- 2022: 332024: 1458%
- Surgery
- 2022: 122024: 0100%
Santiago Ulloa Ramirez compared with the Puerto Rico median for general surgeons, 2024
- Santiago Ulloa Ramirez
- Puerto Rico median
- Medicare services
- 14vs 1926% below
- Medicare patients
- 22vs 1822% above
- Part D claims
- 274vs 515.4 times
Medians across 167 general surgeons in Puerto Rico with Dmand AI profiles that report each measure.
Santiago Ulloa Ramirez'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
Santiago A. Ulloa Ramirez treated 22 Medicare patients in 2024, average age 77
CMS counts 22 Medicare patients who saw Santiago Ulloa Ramirez in 2024. The largest group is 75 to 84, with 11 patients. 75% of them have high blood pressure, and 73% have high cholesterol. Their average risk score is 1.34, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Santiago Ulloa Ramirez's median patient age at 69, with 50% women.
Santiago Ulloa Ramirez's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Santiago Ulloa Ramirez's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Diabetes59%
Share of Medicare patients with each condition. A patient can have several.
Santiago Ulloa Ramirez's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Santiago A. Ulloa Ramirez wrote 303 Medicare Part D claims in 2024
In 2024, Santiago Ulloa Ramirez wrote 303 Medicare Part D claims for 157 patients. 100% of them were for generic drugs. CMS names the drug for 274 of them, across 7 drugs with 11 or more claims each, at $3,643 in total drug cost. In 2023, CMS named 274 claims across 7 drugs.
Santiago Ulloa Ramirez's Part D claims by kind of drug, 2024
- Generic302 claims100%
- Brand-name and other1 claims0%
Santiago Ulloa Ramirez'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 Santiago Ulloa Ramirez's Part D claims, 2024
- Antibiotics27%83 of 303 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: 2742024: 274No change
Drugs named by CMS: 7 in 2024, 7 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
Santiago A. Ulloa Ramirez ranks in the 99th percentile for colonoscopy in Medicare
Santiago Ulloa Ramirez accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 445 procedures of colonoscopy by Santiago Ulloa Ramirez, more than 99% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Santiago Ulloa Ramirez ranks in Medicare procedure volume
- Colonoscopy
- 99th percentile445 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Santiago A. Ulloa Ramirez received $320 in industry payments from 2018 to 2025
CMS Open Payments shows 6 general payments to Santiago Ulloa Ramirez from 2 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Johnson and Johnson International paid the most, $173.
General payments to Santiago Ulloa Ramirez by program year, 2018 to 2025
Companies that paid Santiago Ulloa Ramirez the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Santiago A. Ulloa Ramirez'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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 Santiago A. Ulloa Ramirez
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Santiago A. Ulloa Ramirez's NPI number?
Santiago A. Ulloa Ramirez's NPI number is 1619074960. It was assigned on September 20, 2006, and it is active in the NPI Registry.
What does Santiago A. Ulloa Ramirez specialize in?
Santiago A. Ulloa Ramirez is a general surgeon in San Juan, Puerto Rico. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Santiago A. Ulloa Ramirez practice?
Santiago Ulloa Ramirez practices at Pda. 20 C/ San Rafael # 1395, Santurce, PR 00909. Santiago Ulloa Ramirez also practices at 1395 Calle San Rafael, San Juan, PR 00909. Santiago Ulloa Ramirez's primary practice is Doctors' Center Hospital Orlando Health - San Juan in Santurce, Puerto Rico, part of Orlando Health.
What is Santiago A. Ulloa Ramirez's office phone number?
The practice phone on file for Santiago Ulloa Ramirez is (787) 723-2950.
What is Santiago A. Ulloa Ramirez's medical license number?
Santiago Ulloa Ramirez holds Puerto Rico license 10722.
Which hospitals is Santiago A. Ulloa Ramirez affiliated with?
Santiago Ulloa Ramirez practices at Doctors' Center Hospital Orlando Health - San Juan in Santurce, Puerto Rico.
Does Santiago A. Ulloa Ramirez accept Medicare?
Yes. CMS data shows Santiago Ulloa Ramirez billed Medicare for 14 services in 2024, and Santiago Ulloa Ramirez accepts Medicare assignment.
How many Medicare patients does Santiago A. Ulloa Ramirez see?
CMS counts 22 Medicare patients who saw Santiago Ulloa Ramirez in 2024, with an average age of 77.
What services does Santiago A. Ulloa Ramirez bill to Medicare?
In 2024, Santiago Ulloa Ramirez's most billed Medicare services were office visit, new patient (99203).
What drugs does Santiago A. Ulloa Ramirez prescribe most?
In 2024 Medicare Part D data, Santiago Ulloa Ramirez's most prescribed drugs by claims were Midazolam HCl, Metronidazole and Ciprofloxacin HCl.
Has Santiago A. Ulloa Ramirez received payments from drug or device companies?
CMS Open Payments shows $320 in general payments to Santiago Ulloa Ramirez from 2 companies from 2018 to 2025. The largest total came from Johnson and Johnson International.
How long has Santiago A. Ulloa Ramirez been practicing?
Santiago Ulloa Ramirez graduated from medical school in 1990, 36 years ago.
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