Mary Joy L. Sia Su, MD
Hospitalist Physician · St Cloud, MN
Mary Joy L. Sia Su, MD is a hospitalist physician with a practice address in St Cloud, Minnesota, and NPI 1356374136, issued on Jul 7, 2006. Check the license (Minnesota 44485, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Mary Joy L. Sia Su
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 44485 MN
Self-reported in NPPES; status is on the state search - Practice location
- 1200 Sixth Ave N, St Cloud, MN 56303
- Phone
- (320) 251-2700
- Enumerated
- Jul 7, 2006
- Record last updated
- Mar 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 690922100 MN
- Medicare enrollment
- Enrolled (PECOS I20100604000718); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 401 in Minnesota → Look up another NPI →
Also registered at 1200 Sixth Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- David Benditt, MDCardiovascular Disease Physician1073559134
- Courtney Brever, PA-CPhysician Assistant1093120131
Verify Mary Joy L. Sia Su in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 44485Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average hospitalist physician in 2024
206 Medicare Part D claims for 66 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Isosorbide Mononitrate Er19 claims
- Pantoprazole Sodium13 claims
- Metoprolol Succinate12 claims
- Metoprolol Tartrate11 claims
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.
Bills Medicare through 4 group practices
- Allina Health SystemSt Paul, MN
- Centracare ClinicSaint Cloud, MN
- Centracare Health System-NR LLCMonticello, MN
- Centracare Health-Paynesville LLCPaynesville, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Joy L. Sia Su among 401 hospitalist physician records in Minnesota
Mary Joy L. Sia Su, MD is one of 401 hospitalist physician records with a practice address in Minnesota. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 78% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 88% of these records are
- Graduated1995 · median 2011 among the 354 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 hospitalist physician records list a practice address in St Cloud
They are 29 of the 474 NPPES records with a practice address in St Cloud, and 401 hospitalist physician records in Minnesota.
All 401 in Minnesota → Every provider in St Cloud → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Olayiwola Adetunji, MBBSSt Cloud, MN 563031578552477
- Christopher Aronson, MDSaint Cloud, MN 563031649269291
- Melissa Barry, MDSaint Cloud, MN 563031700846425
- Gregory Cooper, MDSaint Cloud, MN 563031730179870
- Sherrie Erickson-Birkedahl, MDSt Cloud, MN 563031407830482
- Gemma Lim, MD, FACPSt Cloud, MN 563031497726749
- Paul Marek, MD, FHMSt Cloud, MN 563031134118920
- Eric McFarling, MDSt Cloud, MN 563031467437251
Common questions
What is Mary Joy L. Sia Su, MD's NPI number?
Mary Joy L. Sia Su, MD's National Provider Identifier (NPI) is 1356374136, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Joy L. Sia Su, MD located?
The NPPES record lists a practice address at 1200 Sixth Ave N, St Cloud, MN, 56303. Phone: (320) 251-2700. Providers update this record themselves, so call before visiting.
How can I verify Mary Joy L. Sia Su, MD's license?
NPPES lists Minnesota license number 44485, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Joy L. Sia Su, MD prescribe under Medicare Part D?
In 2024, Mary Joy L. Sia Su, MD had 206 Medicare Part D claims for 66 beneficiaries; the average among hospitalist physician prescribers was 521. 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.