DR. SYED MOJIZ UL HASAN MD
NPI 1285086868
Internal Medicine - Medical Oncology in Festus, MO
About Dr. Syed Mojiz Ul Hasan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SYED MOJIZ UL HASAN MD (NPI 1285086868) is an individual medical oncology provider in Festus, Missouri, licensed in Missouri (2019024553) and active in the NPI registry since July 2016. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 2
Accepted Insurance
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
Dr. Syed Mojiz Ul Hasan 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.
Medicare Billing Reassignments
3Medicare enrollment records show Syed Hasan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 1,133 clinicians in this Medicare group
Washington, MO 63090
- Reassigned Medicare billing, Missouri enrollment
- 34 clinicians in this Medicare group
Hannibal, MO 63401
- Reassigned Medicare billing, Missouri enrollment
- 149 clinicians in this Medicare group
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 3
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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital St Louis
Acute Care Hospitals · Saint Louis, MOMercy Hospital Jefferson
Acute Care Hospitals · Festus, MOMercy Hospital South
Acute Care Hospitals · Saint Louis, MOParkland Health Center
Acute Care Hospitals · Farmington, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63028 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FESTUS, MO 63028
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 Syed Hasan's NPI number?
The NPI number for Syed Hasan is 1285086868. It was assigned to this individual provider in the NPPES registry on July 7, 2016.
Where is Syed Hasan located?
Syed Hasan practices at 1350 Us Highway 61, Festus, MO 63028. The listed phone number is (636) 931-3655.
What is Syed Hasan's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Syed Hasan enrolled in Medicare?
Yes. Syed Hasan 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 Syed Hasan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Syed Hasan reassigns Medicare benefits to 3 organizations: Washington University (Saint Louis, MO), Mercy Clinic Oncology, LLC (Washington, MO) and Hannibal Regional Healthcare System, Inc (Hannibal, MO). 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 Syed Hasan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Syed Hasan accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Syed Hasan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Syed Hasan affiliated with any hospitals?
According to CMS data, Syed Hasan is affiliated with Mercy Hospital St Louis, Mercy Hospital Jefferson, Mercy Hospital South and Parkland Health Center.
When was this NPI record last updated?
The NPPES record for Syed Hasan was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Dr. Syed Mojiz Ul Hasan, MD · NPI 1285086868
Medical Oncology physician in Festus, Missouri. Individual provider, active in the CMS NPPES registry since July 7, 2016.
## Identity
- **NPI:** 1285086868 (Entity type: Individual)
- **Enumerated:** July 7, 2016
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** 2019024553 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1350 US HIGHWAY 61, Festus, MO 63028-4124
- **Phone:** (636) 931-3655
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Washington University (NPI 1992746903, Saint Louis, MO); Mercy Clinic Oncology, LLC (NPI 1407169915, Washington, MO); Hannibal Regional Healthcare System, Inc (NPI 1134311392, Hannibal, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** August 5, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1285086868) · Data from the CMS NPPES public registry.