Dionisia Atienza Sy, MD
Pediatrics Physician · Brownstown Twp, MI
Dionisia Atienza Sy, MD is a pediatrics physician with a practice address in Brownstown Twp, Michigan, and NPI 1790787562, issued on Aug 11, 2005. Check the license (Michigan DS045585, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Dionisia Atienza Sy
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- DS045585 MI
Self-reported in NPPES; status is on the state search - Practice location
- 23050 West RD, Brownstown Twp, MI 48183
- Phone
- (734) 671-9800
- Enumerated
- Aug 11, 2005
- Record last updated
- Feb 28, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (734) 671-7690
- Medicaid ID
- 2968364 MI
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,180 in Michigan → Look up another NPI →
Also registered at 23050 West RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Louis Andary, MDObstetrics & Gynecology Physician1528048477
- Steven CrossleyFamily Medicine Physician1770922734
- Andrew Dettore, D.O.Pediatrics Physician1649489808
- William Ellington, PTAPhysical Medicine & Rehabilitation Physician1578369047
- Courtney Gearhart, PA-CPhysician Assistant1982911871
- Edward O'Connell, PA-CPhysician Assistant1326062282
Verify Dionisia Atienza Sy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license DS045585Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average pediatrics physician in 2024
30 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Dionisia Atienza Sy among 2,180 pediatrics physician records in Michigan
Dionisia Atienza Sy, MD is one of 2,180 pediatrics physician records with a practice address in Michigan. 38% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 38% of these records are
- In the CMS Doctors and Clinicians fileNo · 11% of these records are
- Record last updated2014 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 pediatrics physician records list a practice address in Brownstown Twp
They are 4 of the 134 NPPES records with a practice address in Brownstown Twp, and 2,180 pediatrics physician records in Michigan.
All 2,180 in Michigan → Every provider in Brownstown Twp → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Rabia Akbar, MDTrenton, MI 481831114149283
- Heather Cadena, MDTrenton, MI 481831558342881
- Susan Chamberlain, MDTrenton, MI 481831336121680
- Andrew Dettore, D.O.Brownstown Twp, MI 481831649489808
- Susan Kowalski, CPNPBrownstown Twp, MI 481831750722252
- Michelle Pavlik, M.D.Woodhaven, MI 481831861481392
- Rick Poston, D.O.Woodhaven, MI 481831043209562
- Meenakshi Soi, MDTrenton, MI 481831144357427
Common questions
What is Dionisia Atienza Sy, MD's NPI number?
Dionisia Atienza Sy, MD's National Provider Identifier (NPI) is 1790787562, issued on Aug 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Dionisia Atienza Sy, MD located?
The NPPES record lists a practice address at 23050 West RD, Brownstown Twp, MI, 48183. Phone: (734) 671-9800. Providers update this record themselves, so call before visiting.
How can I verify Dionisia Atienza Sy, MD's license?
NPPES lists Michigan license number DS045585, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Dionisia Atienza Sy, MD prescribe under Medicare Part D?
In 2024, Dionisia Atienza Sy, MD had 30 Medicare Part D claims; the average among pediatrics physician prescribers was 375. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.