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DR. ELIZABETH HALLORAN M.D.
NPI 1275501900
Internal Medicine in Baltimore, MD

Active since March 09, 2006PECOS Enrolled
1501 MOUNT ROYAL AVE, BALTIMORE, MD 21217(410) 225-8855(410) 225-8858 Get Directions Write a Review

NPPES record last updated: June 30, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Elizabeth Halloran M.d. NPPES

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

DR. ELIZABETH HALLORAN M.D. (NPI 1275501900) is an individual internal medicine provider in Baltimore, Maryland, licensed in Maryland (D0051135) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275501900
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. ELIZABETH HALLORANCredential: M.D.
Location Address1501 MOUNT ROYAL AVEBaltimore, MD 21217
Mailing Address1501 Mount Royal BlvdBaltimore, MD 21217 · (410) 225-8855 · Fax (410) 225-8858
Phone(410) 225-8855
Fax(410) 225-8858
Sole ProprietorNo
Enumeration DateMarch 9, 2006
Last NPPES UpdateJune 30, 2021
NPPES CertifiedJune 30, 2021
✔ NPI 1275501900 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MD · D0051135
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1501 MOUNT ROYAL AVE, Baltimore, MD 21217
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Elizabeth Halloran M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Elizabeth Halloran reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc
4.5 mi
Health Maintenance Organization
1701 TWIN SPRINGS RD
Halethorpe, MD 21227
  • Reassigned Medicare billing, Maryland and District of Columbia enrollments
  • Also billed through NPI 1952461816 (District of Columbia)
  • 1,253 clinicians in this Medicare group
NPI 1417294984 (410) 737-5000

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21217 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
$139.05 typical visit price
range $60.73 – $183.44
Typical copayment $34.76 (range $15.18 – $45.86)
Most-billed visit code 99204
Established Patient
$106.59 typical visit price
range $19.60 – $149.17
Typical copayment $26.64 (range $4.90 – $37.29)
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.

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 Elizabeth Halloran's NPI number?

The NPI number for Elizabeth Halloran is 1275501900. It was assigned to this individual provider in the NPPES registry on March 9, 2006.

Where is Elizabeth Halloran located?

Elizabeth Halloran practices at 1501 Mount Royal Ave, Baltimore, MD 21217. The listed phone number is (410) 225-8855.

What is Elizabeth Halloran's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Elizabeth Halloran enrolled in Medicare?

Yes. Elizabeth Halloran is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Elizabeth Halloran's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Halloran reassigns Medicare benefits to Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Halethorpe, MD). The 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 Elizabeth Halloran's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Elizabeth Halloran was last updated on June 30, 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.