SEAN ANTHONY ISAAC JR. MD
NPI 1386835767
Anesthesiology in Baltimore, MD
About Sean Anthony Isaac Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SEAN ANTHONY ISAAC JR. MD (NPI 1386835767) is an individual anesthesiology provider in Baltimore, Maryland, licensed in Pennsylvania (MD479390) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS, is affiliated with Wellspan York Hospital, and maintains 14 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 14
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
Sean Anthony Isaac Jr. 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
7Medicare enrollment records show Sean Isaac reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Towson, MD 21204
- Reassigned Medicare billing, Maryland enrollment
- 501 clinicians in this Medicare group
Columbia, MD 21046
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 717 clinicians in this Medicare group
Shrewsbury, PA 17361
- Reassigned Medicare billing, Pennsylvania enrollment
- 3,080 clinicians in this Medicare group
Gettysburg, PA 17325
- Reassigned Medicare billing, Pennsylvania enrollment
- 156 clinicians in this Medicare group
Harrisburg, PA 17101
- Reassigned Medicare billing, Pennsylvania enrollment
- 394 clinicians in this Medicare group
Pottsville, PA 17901
- Reassigned Medicare billing, Pennsylvania enrollment
- 4,429 clinicians in this Medicare group
Muncy, PA 17756
- Reassigned Medicare billing, Pennsylvania enrollment
- 1,405 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 5
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.
Wellspan York Hospital
Acute Care Hospitals · York, PAGettysburg Hospital
Acute Care Hospitals · Gettysburg, PAUpmc Pinnacle Hospitals
Acute Care Hospitals · Harrisburg, PAWellspan Chambersburg Hospital
Acute Care Hospitals · Chambersburg, PAOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21224
BALTIMORE, MD 21224
BALTIMORE, MD 21224
BALTIMORE, MD 21224
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 Sean Isaac's NPI number?
The NPI number for Sean Isaac is 1386835767. It was assigned to this individual provider in the NPPES registry on August 9, 2007.
Where is Sean Isaac located?
Sean Isaac practices at 4940 Eastern Ave, Baltimore, MD 21224. The listed phone number is (410) 550-0100.
What is Sean Isaac's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Sean Isaac enrolled in Medicare?
Yes. Sean Isaac 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 Sean Isaac's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sean Isaac reassigns Medicare benefits to 7 organizations: University Of Maryland St. Joseph Medical Group, LLC (Towson, MD), First Colonies Anesthesia Associates, LLC (Columbia, MD), Wellspan Medical Group (Shrewsbury, PA), The Gettysburg Hospital (Gettysburg, PA), Upmc Pinnacle Anesthesia Services, LLC (Harrisburg, PA) and 2 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 Sean Isaac's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Sean Isaac affiliated with any hospitals?
According to CMS data, Sean Isaac is affiliated with Wellspan York Hospital, Gettysburg Hospital, Upmc Pinnacle Hospitals and Wellspan Chambersburg Hospital.
When was this NPI record last updated?
The NPPES record for Sean Isaac was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Sean Anthony Isaac Jr., MD · NPI 1386835767
Anesthesiology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since August 9, 2007.
## Identity
- **NPI:** 1386835767 (Entity type: Individual)
- **Enumerated:** August 9, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MD479390 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 4940 EASTERN AVE, Baltimore, MD 21224-2735
- **Phone:** (410) 550-0100
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): University Of Maryland St. Joseph Medical Group, LLC (NPI 1053816074, Towson, MD); First Colonies Anesthesia Associates, LLC (NPI 1740218767, Columbia, MD); Wellspan Medical Group (NPI 1003229626, Shrewsbury, PA); The Gettysburg Hospital (NPI 1366472706, Gettysburg, PA); Upmc Pinnacle Anesthesia Services, LLC (NPI 1730693979, Harrisburg, PA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York Medical College, class of 2003
## Record status
- **NPPES last updated:** January 14, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1386835767) · Data from the CMS NPPES public registry.