MARY JOY L SIA SU MD
NPI 1356374136
Hospitalist in St Cloud, MN

Q: What is Mary Joy Sia Su's NPI number?

The NPI number for Mary Joy Sia Su is 1356374136. It was assigned to this individual provider in the NPPES registry on July 7, 2006.

Q: What is Mary Joy Sia Su's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Mary Joy Sia Su was last updated on March 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 07, 2006PECOS EnrolledAccepts Medicare Assignment

1200 SIXTH AVE N, ST CLOUD, MN 56303(320) 251-2700 Get Directions Write a Review

NPPES record last updated: March 11, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Mary Joy L Sia Su Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY JOY L SIA SU MD (NPI 1356374136) is an individual hospitalist provider in St Cloud, Minnesota, licensed in Minnesota (44485) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Alomere Health, and is a graduate of Other (1995).

NPPES Registry Identity

NPI1356374136

Entity TypeIndividualFemale

Primary Taxonomy208M00000X

Provider Legal NameMARY JOY L SIA SUCredential: MD

Location Address1200 SIXTH AVE NSt Cloud, MN 56303-2735

Mailing Address1200 Sixth Ave NSt Cloud, MN 56303-2735 · (320) 251-2700

Phone(320) 251-2700

Sole ProprietorNo

Medical School CMSOtherGraduated 1995

Enumeration DateJuly 7, 2006

Last NPPES UpdateMarch 11, 2021

NPPES CertifiedMarch 11, 2021

✔ NPI 1356374136 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in MN · 44485

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedInternal MedicineTaxonomy 207R00000X · License 44485 (MN)

1200 SIXTH AVE N, St Cloud, MN 56303

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Other Identifiers 1

Medicaid690922100MN

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mary Joy L Sia Su Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1759411572

PECOS Enrollment IDI20100604000718

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Mary Joy Sia Su reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Centracare Clinic

Same address

Primary Care

1200 6TH AVE N
Saint Cloud, MN 56303

Reassigned Medicare billing, Minnesota enrollment
1,051 clinicians in this Medicare group

NPI 1538696323 (320) 252-5131

Centracare Health-Paynesville LLC

19 mi

Rural Health

130 1ST ST NE
Richmond, MN 56368

Reassigned Medicare billing, Minnesota enrollment
Also billed through NPI 1205269941 (Minnesota)
124 clinicians in this Medicare group

NPI 1144653734 (320) 597-2122

Allina Health System

22 mi

Family Medicine

440 ELM ST E
Annandale, MN 55302

Reassigned Medicare billing, Minnesota enrollment
2,609 clinicians in this Medicare group

NPI 1457657249 (320) 274-3744

Centracare Health System-Nr LLC

27 mi

Critical Access

1013 HART BLVD
Monticello, MN 55362

Reassigned Medicare billing, Minnesota enrollment
285 clinicians in this Medicare group

NPI 1275872772 (763) 295-2945

Centracare Health System - Melrose

29 mi

Critical Access

525 W. MAIN STREET
Melrose, MN 56352

Reassigned Medicare billing, Minnesota enrollment
180 clinicians in this Medicare group

NPI 1720045073 (320) 256-4231

Centracare Health System - Sauk Centre

40 mi

Rural Health

425 ELM ST N
Sauk Centre, MN 56378

Reassigned Medicare billing, Minnesota enrollment
Also billed through NPI 1740553932 (Minnesota)
173 clinicians in this Medicare group

NPI 1578813762 (320) 352-2221

Centracare Health System - Long Prairie

43 mi

Critical Access

50 CENTRACARE DR
Long Prairie, MN 56347

Reassigned Medicare billing, Minnesota enrollment
156 clinicians in this Medicare group

NPI 1164471678 (320) 732-2141

Carris Health LLC

53 mi

Emergency Medicine

301 BECKER AVE SW
Willmar, MN 56201

Reassigned Medicare billing, Minnesota enrollment
179 clinicians in this Medicare group

NPI 1134632680 (320) 235-4543

Centracare Health - Benson LLC

72 mi

Critical Access

1815 WISCONSIN AVE
Benson, MN 56215

Reassigned Medicare billing, Minnesota enrollment
Also billed through NPI 1023728516 (Minnesota)
95 clinicians in this Medicare group

NPI 1326757154 (320) 843-4232

Carris Health - Redwood LLC

85 mi

Emergency Medicine

101 CARING WAY
Redwood Falls, MN 56283

Reassigned Medicare billing, Minnesota enrollment
Also billed through NPI 1194206748 (Minnesota)
183 clinicians in this Medicare group

NPI 1265914048 (507) 637-4500

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

293 services289 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

227 services101 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

88 services50 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

58 services57 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

57 services57 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

20 services18 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Alomere Health

Acute Care Hospitals · Alexandria, MN

4/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number240030

Location111 17th Avenue EastAlexandria, MN 56308 · Douglas County

Emergency services Birthing friendly

St Cloud Hospital

Acute Care Hospitals · Saint Cloud, MN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240036

Location1406 6th Ave NorthSaint Cloud, MN 56303 · Stearns County

Emergency services Birthing friendly

Allina United Hospital

Acute Care Hospitals · Saint Paul, MN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number240038

Location333 North Smith AvenueSaint Paul, MN 55102 · Ramsey County

Emergency services Birthing friendly

Centracare- Rice Memorial Hospital

Acute Care Hospitals · Willmar, MN

4/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number240088

Location301 Becker Ave SWWillmar, MN 56201 · Kandiyohi County

Emergency services Birthing friendly

Centracare Health - Monticello

Critical Access Hospitals · Monticello, MN

OwnershipVoluntary non-profit - Private

CMS Certification Number241362

Location1013 Hart BoulevardMonticello, MN 55362 · Wright County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 56303 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$127.61 typical visit price

range $56.00 – $168.28

Typical copayment $31.90 (range $14.00 – $42.07)

Most-billed visit code 99204

Established Patient

$98.61 typical visit price

range $18.32 – $138.04

Typical copayment $24.65 (range $4.58 – $34.51)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

2 suppliers13 claims13 services$18.18 avg. paid by Medicare

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

1 supplier12 claims12 services$922.57 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

3 suppliers25 claims25 services$92.56 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DAVID G BENDITT MD

Internal Medicine (Cardiovascular Disease)

1200 SIXTH AVE N, CENTRACARE CLINIC
ST CLOUD, MN 56303

Stearns County (320) 252-5131

TROY A PAYNE MD

Internal Medicine (Sleep Medicine)

1200 SIXTH AVE N, CENTRA CARE CLINIC
ST CLOUD, MN 56303

Stearns County (320) 251-0726

DR. CHRISTOPHER WILLIAM WIELAND MD

Hospitalist

1200 SIXTH AVE N, CENTRACARE CLINIC
ST CLOUD, MN 56303

Stearns County (320) 251-2700

COURTNEY LYNN BREVER PA-C

Physician Assistant

1200 SIXTH AVE N
ST CLOUD, MN 56303

Stearns County (320) 656-7020

ALYSSA MARIE MONSON RD LD

Dietitian, Registered

1200 SIXTH AVE N, CENTRACARE CLINIC
ST CLOUD, MN 56303

Stearns County (320) 252-3342

DR. JESSIE LEE KERNS ROSKE MD

Hospitalist

1200 SIXTH AVE N, CENTRACARE CLINIC
ST CLOUD, MN 56303

Stearns County (320) 251-2700

PAUL L MAREK MD, FHM

Hospitalist

1200 SIXTH AVE N
ST CLOUD, MN 56303

Stearns County (320) 251-2700

DR. JEFFREY S GERDES MD

Neurological Surgery

1200 SIXTH AVE N, CENTRACARE CLINIC RIVER CAMPUS/NEROSURGERY
ST CLOUD, MN 56303

Stearns County (320) 259-1405

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Joy Sia Su's NPI number?

The NPI number for Mary Joy Sia Su is 1356374136. It was assigned to this individual provider in the NPPES registry on July 7, 2006.

Where is Mary Joy Sia Su located?

Mary Joy Sia Su practices at 1200 Sixth Ave N, St Cloud, MN 56303. The listed phone number is (320) 251-2700.

What is Mary Joy Sia Su's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Mary Joy Sia Su enrolled in Medicare?

Yes. Mary Joy Sia Su is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Mary Joy Sia Su's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Joy Sia Su reassigns Medicare benefits to 10 organizations: Centracare Clinic (Saint Cloud, MN), Centracare Health-Paynesville LLC (Richmond, MN), Allina Health System (Annandale, MN), Centracare Health System-Nr LLC (Monticello, MN), Centracare Health System - Melrose (Melrose, MN) and 5 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Joy Sia Su's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Mary Joy Sia Su affiliated with any hospitals?

According to CMS data, Mary Joy Sia Su is affiliated with Alomere Health, St Cloud Hospital, Allina United Hospital, Centracare- Rice Memorial Hospital and Centracare Health - Monticello.

When was this NPI record last updated?

The NPPES record for Mary Joy Sia Su was last updated on March 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.