DR. MICHAEL H BASS MD
NPI 1841451580
Internal Medicine - Gastroenterology in Wilmington, DE
About Dr. Michael H Bass Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL H BASS MD (NPI 1841451580) is an individual gastroenterology provider in Wilmington, Delaware, licensed in Delaware (C10012022) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses
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. Michael H Bass 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 Michael Bass reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newark, DE 19713
- Reassigned Medicare billing, Delaware enrollment
- 104 clinicians in this Medicare group
Elkton, MD 21921
- Reassigned Medicare billing, Maryland enrollment
- 512 clinicians in this Medicare group
Milford, DE 19963
- Reassigned Medicare billing, Delaware enrollment
- 299 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 14
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19808 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Michael Bass's NPI number?
The NPI number for Michael Bass is 1841451580. It was assigned to this individual provider in the NPPES registry on June 24, 2008.
Where is Michael Bass located?
Michael Bass practices at 1941 Limestone Rd Ste 120, Wilmington, DE 19808. The listed phone number is (302) 832-1545.
What is Michael Bass's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Michael Bass enrolled in Medicare?
Yes. Michael Bass 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 Michael Bass's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Bass reassigns Medicare benefits to 3 organizations: Delaware Center For Digestive Care LLC (Newark, DE), Union Hospital Of Cecil County, Inc. (Elkton, MD) and Bayhealth Medical Center, Inc. (Milford, DE). 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 Michael Bass's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Bass accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Blue Care Network of Michigan and 1 other insurer list Michael Bass 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.
When was this NPI record last updated?
The NPPES record for Michael Bass was last updated on July 29, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. Michael H Bass, MD · NPI 1841451580
Gastroenterology physician in Wilmington, Delaware. Individual provider, active in the CMS NPPES registry since June 24, 2008.
## Identity
- **NPI:** 1841451580 (Entity type: Individual)
- **Enumerated:** June 24, 2008
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** C10012022 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 1941 LIMESTONE RD STE 120, Wilmington, DE 19808-5424
- **Phone:** (302) 832-1545 · **Fax:** (302) 834-4863
## 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): Delaware Center For Digestive Care LLC (NPI 1558722561, Newark, DE); Union Hospital Of Cecil County, Inc. (NPI 1407607450, Elkton, MD); Bayhealth Medical Center, Inc. (NPI 1356808208, Milford, DE) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** July 29, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1841451580) · Data from the CMS NPPES public registry.