Dr. Dionisia Atienza Sy, MD
- Part D claims, 2024
- 30
- Hospital affiliations
- 1
- Industry payments
- $308
- Medical group
- 1
- State license
- 1
- Practice address
- 18101 Oakwood Blvd, Dearborn, MI 48124
- Practice phone
- Call (313) 593-7125
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Sy'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. Dionisia Atienza Sy is a pediatrician in Dearborn, Michigan
Dr. Sy practices at Corewell Health Dearborn Hospital in Dearborn, Michigan, part of Corewell Health.
Dr. Sy's NPI, 1790787562, was assigned on August 11, 2005. Dr. Sy holds Michigan license DS045585.
- NPI
- 1790787562NPI Registry (opens in a new tab)
- NPI enumeration date
- August 11, 2005
- NPI status
- Active
- Practice phone
- (313) 593-7125
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Dionisia Atienza Sy practices at Corewell Health Dearborn Hospital in Dearborn, Michigan
Dr. Sy's primary practice is Corewell Health Dearborn Hospital, at 18101 Oakwood Blvd, Dearborn, MI 48124 in Wayne County. The practice phone is (313) 593-7125.
- Corewell Health Dearborn Hospital18101 Oakwood Blvd, Dearborn, MI 48124 · Wayne CountyPhone(313) 593-7125
Source: Dmand AI Affiliation Data
Dr. Dionisia Atienza Sy is affiliated with 2 sites of care and 1 medical group
Dr. Sy's primary practice is Corewell Health Dearborn Hospital in Dearborn, Michigan, part of Corewell Health. Dmand AI also links Dr. Sy to 1 group practice or clinic and 1 medical group, 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. Dionisia Atienza Sy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Dearborn Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dionisia Atienza Sy is one of 1,807 pediatricians in Michigan
Pediatrics is Dr. Sy's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Sy is licensed in Michigan.
Specialties and state licenses
- Pediatrics, MichiganPrimary
Pediatricians near Dr. Sy
Counts of pediatricians 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. Dionisia Atienza Sy's patients have a median age of 13
Across all payers, Dmand AI patient panel data puts Dr. Sy's median patient age at 13, with 44% women.
Dr. Sy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 13
Patient panel by sex, all payers
- Women44%
- Men56%
Source: Dmand AI Patient Panel Data
Dr. Dionisia Atienza Sy wrote 30 Medicare Part D claims in 2024
In 2024, Dr. Sy wrote 30 Medicare Part D claims. 83% of them were for generic drugs.
Dr. Sy's Part D claims by kind of drug, 2024
- Generic25 claims83%
- Brand-name and other5 claims17%
Drug classes CMS tracks in Dr. Sy's Part D claims, 2024
- Antibiotics37%11 of 30 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Dionisia Atienza Sy received $308 in industry payments from 2016 to 2023
CMS Open Payments shows 10 general payments to Dr. Sy from 5 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $120.
General payments to Dr. Sy by program year, 2016 to 2023
Companies that paid Dr. Sy the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Dionisia Atienza Sy'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 Dr. Dionisia Atienza Sy
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. Dionisia Atienza Sy's NPI number?
Dr. Dionisia Atienza Sy's NPI number is 1790787562. It was assigned on August 11, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Dionisia Atienza Sy?
Dr. Dionisia Atienza Sy is a pediatrician in Dearborn, Michigan. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Dionisia Atienza Sy practice?
Dr. Sy practices at 18101 Oakwood Blvd, Dearborn, MI 48124. Dr. Sy's primary practice is Corewell Health Dearborn Hospital in Dearborn, Michigan, part of Corewell Health. Dmand AI also links Dr. Sy to 1 group practice or clinic and 1 medical group.
What is Dr. Dionisia Atienza Sy's office phone number?
The practice phone on file for Dr. Sy is (313) 593-7125.
What is Dr. Dionisia Atienza Sy's medical license number?
Dr. Sy holds Michigan license DS045585.
Which hospitals is Dr. Dionisia Atienza Sy affiliated with?
Dr. Sy practices at Corewell Health Dearborn Hospital in Dearborn, Michigan.
Has Dr. Dionisia Atienza Sy received payments from drug or device companies?
CMS Open Payments shows $308 in general payments to Dr. Sy from 5 companies from 2016 to 2023. The largest total came from Novo Nordisk Inc.
How long has Dr. Dionisia Atienza Sy been practicing?
Dr. Sy's NPI was assigned in 2005.
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