Dr. Carlos A. Key Oyola Sr., MD
- Medicare services, 2022
- 29
- Part D claims, 2024
- 179
- Hospital affiliations
- 1
- Industry payments
- $2,905
- State license
- 1
- Practice address
- 1451 Ashford Avenue, El Condado, San Juan, PR 00907
- Practice phone
- Call (787) 721-2160
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Key Oyola's professional email, personal email and mobile number
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Dr. Carlos A. Key Oyola Sr. is an anesthesiologist in San Juan, Puerto Rico
Dr. Key Oyola practices at Ashford Hospital in San Juan, Puerto Rico, part of Ashford Presbyterian Community Hospital.
Dr. Key Oyola's NPI, 1821073065, was assigned on December 9, 2005. Dr. Key Oyola graduated from University of Puerto Rico School of Medicine in 1986. Dr. Key Oyola holds Puerto Rico license 7965.
- NPI
- 1821073065NPI Registry (opens in a new tab)
- NPI enumeration date
- December 9, 2005
- NPI status
- Active
- Practice phone
- (787) 721-2160
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Carlos A. Key Oyola Sr. practices at Ashford Hospital in San Juan, Puerto Rico
Dr. Key Oyola's primary practice is Ashford Hospital, at 1451 Ashford Avenue, El Condado, San Juan, PR 00907 in San Juan County. The practice phone is (787) 721-2160.
- Ashford Hospital1451 Ashford Avenue, El Condado, San Juan, PR 00907 · San Juan CountyPhone(787) 721-2160
Source: Dmand AI Affiliation Data
Dr. Carlos A. Key Oyola Sr. is affiliated with 2 sites of care
Dr. Key Oyola's primary practice is Ashford Hospital in San Juan, Puerto Rico, part of Ashford Presbyterian Community Hospital. Dmand AI also links Dr. Key Oyola to 1 therapy and rehab clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Carlos A. Key Oyola Sr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Key Oyola practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ashford Hospital | Available with a free account |
| +1 more affiliated site | 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 Ashford Presbyterian Community Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Carlos A. Key Oyola Sr. is one of 150 anesthesiologists in Puerto Rico
Anesthesiology is Dr. Key Oyola's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Key Oyola is licensed in Puerto Rico.
Specialties and state licenses
- Anesthesiology, Puerto RicoPrimary
Anesthesiologists near Dr. Key Oyola
Counts of anesthesiologists 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. Carlos A. Key Oyola Sr. billed Medicare for 29 services in 2022
CMS data shows 29 Medicare services from Dr. Key Oyola across 2 procedure codes in 2022. Medicare paid $11,559 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Key Oyola's Medicare services by type, 2020 to 2022
- 2020
- 2022
- Anesthesia
- 2020: 142022: 29107%
- Surgery
- 2020: 232022: 0100%
- Office and hospital visits
- 2020: 192022: 0100%
Dr. Key Oyola compared with the Puerto Rico median for anesthesiologists, 2022
- Dr. Key Oyola
- Puerto Rico median
- Medicare services
- 29vs 316% below
- Part D claims
- 50vs 222.3 times
Medians across 118 anesthesiologists in Puerto Rico with Dmand AI profiles that report each measure.
Dr. Key Oyola's most billed Medicare procedure codes, 2022
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. Key Oyola and other anesthesiologists in Puerto Rico.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Carlos A. Key Oyola Sr.'s patients have a median age of 48
Across all payers, Dmand AI patient panel data puts Dr. Key Oyola's median patient age at 48, with 86% women.
Dr. Key Oyola's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women86%
- Men14%
Source: Dmand AI Patient Panel Data
Dr. Carlos A. Key Oyola Sr. wrote 179 Medicare Part D claims in 2024
In 2024, Dr. Key Oyola wrote 179 Medicare Part D claims. 84% of them were for generic drugs. CMS names the drug for 50 of them, across 4 drugs with 11 or more claims each, at $4,040 in total drug cost. In 2023, CMS named 45 claims across 3 drugs.
Dr. Key Oyola's Part D claims by kind of drug, 2024
- Generic151 claims84%
- Brand-name28 claims16%
Dr. Key Oyola'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 452024: 5011%
Drugs named by CMS: 4 in 2024, 3 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
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Dr. Carlos A. Key Oyola Sr. received $2,905 in industry payments from 2016 to 2023
CMS Open Payments shows 23 general payments to Dr. Key Oyola from 7 drug and device companies from 2016 to 2023. Consulting fees make up the largest share, 52% of the total. Merck Sharp & Dohme Corporation paid the most, $2,222.
General payments to Dr. Key Oyola by program year, 2016 to 2023
General payments to Dr. Key Oyola by kind, 2016 to 2023
- Consulting fees$1,50052%
- Food and beverage$1,40548%
Companies that paid Dr. Key Oyola the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Carlos A. Key Oyola Sr. graduated from University of Puerto Rico School of Medicine
Dr. Key Oyola graduated from University of Puerto Rico School of Medicine in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Carlos A. Key Oyola Sr.'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 Data |
| 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) |
| 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. Carlos A. Key Oyola Sr.
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. Carlos A. Key Oyola Sr.'s NPI number?
Dr. Carlos A. Key Oyola Sr.'s NPI number is 1821073065. It was assigned on December 9, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Carlos A. Key Oyola Sr.?
Dr. Carlos A. Key Oyola Sr. is an anesthesiologist in San Juan, Puerto Rico. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Carlos A. Key Oyola Sr. practice?
Dr. Key Oyola practices at 1451 Ashford Avenue, El Condado, San Juan, PR 00907. Dr. Key Oyola's primary practice is Ashford Hospital in San Juan, Puerto Rico, part of Ashford Presbyterian Community Hospital. Dmand AI also links Dr. Key Oyola to 1 therapy and rehab clinic.
What is Dr. Carlos A. Key Oyola Sr.'s office phone number?
The practice phone on file for Dr. Key Oyola is (787) 721-2160.
What is Dr. Carlos A. Key Oyola Sr.'s medical license number?
Dr. Key Oyola holds Puerto Rico license 7965.
Which hospitals is Dr. Carlos A. Key Oyola Sr. affiliated with?
Dr. Key Oyola practices at Ashford Hospital in San Juan, Puerto Rico.
Does Dr. Carlos A. Key Oyola Sr. accept Medicare?
Yes. CMS data shows Dr. Key Oyola billed Medicare for 29 services in 2022.
What services does Dr. Carlos A. Key Oyola Sr. bill to Medicare?
In 2022, Dr. Key Oyola's most billed Medicare services were anesthesia (00790) and anesthesia (01402).
Where did Dr. Carlos A. Key Oyola Sr. go to medical school?
Dr. Key Oyola graduated from University of Puerto Rico School of Medicine in 1986.
What drugs does Dr. Carlos A. Key Oyola Sr. prescribe most?
In 2024 Medicare Part D data, Dr. Key Oyola's most prescribed drugs by claims were Dulera, Metoclopramide HCl and Prednisone.
Has Dr. Carlos A. Key Oyola Sr. received payments from drug or device companies?
CMS Open Payments shows $2,905 in general payments to Dr. Key Oyola from 7 companies from 2016 to 2023. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Carlos A. Key Oyola Sr. been practicing?
Dr. Key Oyola graduated from medical school in 1986, 40 years ago.
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