THERESA ELIZABETH TASSEY M.D.
NPI 1629416672
Emergency Medicine in Baltimore, MD
About Theresa Elizabeth Tassey M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THERESA ELIZABETH TASSEY M.D. (NPI 1629416672) is an individual emergency medicine provider in Baltimore, Maryland, licensed in Maryland (D0081082) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS, is affiliated with Saint Francis Hospital Muskogee, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
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
Theresa Elizabeth Tassey M.d. 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
13Medicare enrollment records show Theresa Tassey reassigns Medicare billing to 13 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- 234 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, Maryland enrollment
- 300 clinicians in this Medicare group
Elkton, MD 21921
- Reassigned Medicare billing, Maryland and Delaware enrollments
- Also billed through NPI 1639956451 (Delaware)
- 135 clinicians in this Medicare group
Newark, DE 19713
- Reassigned Medicare billing, Delaware enrollment
- 1,531 clinicians in this Medicare group
Dover, DE 19901
- Reassigned Medicare billing, Delaware enrollment
- 142 clinicians in this Medicare group
Dover, DE 19901
- Reassigned Medicare billing, Delaware enrollment
- 84 clinicians in this Medicare group
Binghamton, NY 13905
- Reassigned Medicare billing, New York enrollment
- 110 clinicians in this Medicare group
Salem, VA 24153
- Reassigned Medicare billing, Virginia enrollment
- 130 clinicians in this Medicare group
Newport, TN 37821
- Reassigned Medicare billing, North Carolina and Virginia enrollments
- 557 clinicians in this Medicare group
Fort Wayne, IN 46804
- Reassigned Medicare billing, Indiana enrollment
- Medicare enrollment name: Emergency Professionals Of Indiana PC
- 404 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.
Saint Francis Hospital Muskogee
Acute Care Hospitals · Muskogee, OKComanche County Memorial Hospital
Acute Care Hospitals · Lawton, OKSaint Francis Hospital, Inc
Acute Care Hospitals · Tulsa, OKSaint Francis Hospital South, LLC
Acute Care Hospitals · Tulsa, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21202 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
BALTIMORE, MD 21202
BALTIMORE, MD 21202
BALTIMORE, MD 21202
BALTIMORE, MD 21202
BALTIMORE, MD 21202
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 Theresa Tassey's NPI number?
The NPI number for Theresa Tassey is 1629416672. It was assigned to this individual provider in the NPPES registry on June 12, 2013.
Where is Theresa Tassey located?
Theresa Tassey practices at 301 Saint Paul St, Baltimore, MD 21202. The listed phone number is (410) 332-9477.
What is Theresa Tassey's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Theresa Tassey enrolled in Medicare?
Yes. Theresa Tassey 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 Theresa Tassey's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Theresa Tassey reassigns Medicare benefits to 13 organizations: University Of Maryland Emergency Medicine Associates, PA (Baltimore, MD), Whc Physician Group LLC (Washington, DC), Christiana Care Emergency Physicians LLC (Elkton, MD), Christiana Care Health Services Inc (Newark, DE), Bayhealth Emergency Physicians LLC (Dover, DE) and 8 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 Theresa Tassey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Theresa Tassey accept?
Health plans from Blue Cross and Blue Shield of Nebraska, Oscar Health and Oscar Insurance Company list Theresa Tassey 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 Theresa Tassey affiliated with any hospitals?
According to CMS data, Theresa Tassey is affiliated with Saint Francis Hospital Muskogee, Comanche County Memorial Hospital, Saint Francis Hospital, Inc and Saint Francis Hospital South, LLC.
When was this NPI record last updated?
The NPPES record for Theresa Tassey was last updated on July 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Theresa Elizabeth Tassey, M.D. · NPI 1629416672
Emergency Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since June 12, 2013.
## Identity
- **NPI:** 1629416672 (Entity type: Individual)
- **Enumerated:** June 12, 2013
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** D0081082 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 301 SAINT PAUL ST, Baltimore, MD 21202
- **Phone:** (410) 332-9477
## 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:** 13 organizations under Medicare reassignment (form CMS-855R): University Of Maryland Emergency Medicine Associates, PA (NPI 1003760315, Baltimore, MD); Whc Physician Group LLC (NPI 1700154226, Washington, DC); Christiana Care Emergency Physicians LLC (NPI 1871375899, Elkton, MD); Christiana Care Health Services Inc (NPI 1174508410, Newark, DE); Bayhealth Emergency Physicians LLC (NPI 1073012696, Dover, DE); and 8 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** July 6, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1629416672) · Data from the CMS NPPES public registry.