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Dr. Elizabeth Halloran, MD
NPI1275501900
- Medicare services, 2021
- 328
- Part D claims, 2024
- 7,202
- Publications
- 1
- Industry payments
- $16
- Affiliated sites
- 1
- Practice address
- 815 E Pratt St, Baltimore, MD 21202
- Practice phone
- Call (410) 637-5700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente Baltimore Harbor Medical Center
Baltimore, Maryland
Find Dr. Halloran's professional email, personal email and mobile number
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Dr. Elizabeth Halloran is an internist in Baltimore, Maryland
Dr. Halloran practices at Kaiser Permanente Baltimore Harbor Medical Center in Baltimore, Maryland.
Dr. Halloran's NPI, 1275501900, was assigned on March 9, 2006. Dr. Halloran graduated from University of Maryland School of Medicine in 1992. Dr. Halloran holds Maryland license D0051135.
NPI and contact details
- NPI
- 1275501900NPI Registry (opens in a new tab)
- NPI enumeration date
- March 9, 2006
- NPI status
- Active
- Practice phone
- (410) 637-5700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Elizabeth Halloran practices at Kaiser Permanente Baltimore Harbor Medical Center in Baltimore, Maryland
Dr. Halloran's primary practice is Kaiser Permanente Baltimore Harbor Medical Center, at 815 E Pratt St, Baltimore, MD 21202 in Baltimore City. The practice phone is (410) 637-5700.
- Kaiser Permanente Baltimore Harbor Medical Center815 E Pratt St, Baltimore, MD 21202 · Baltimore CityPhone(410) 637-5700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Elizabeth Halloran is affiliated with 2 sites of care and 1 medical group
Dr. Halloran's primary practice is Kaiser Permanente Baltimore Harbor Medical Center in Baltimore, Maryland. The medical group on file is Mid-Atlantic Permanente Medical Group. Dmand AI also links Dr. Halloran to 1 more group practice or clinic, named with a free account.
Kaiser Permanente Baltimore Harbor Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Elizabeth Halloran's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Halloran practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente Baltimore Harbor Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Elizabeth Halloran is one of 3,320 internists in Maryland
Internal medicine is Dr. Halloran's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Halloran is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
Internists near Dr. Halloran
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Elizabeth Halloran billed Medicare for 328 services in 2021
CMS data shows 328 Medicare services from Dr. Halloran across 6 procedure codes in 2021. Medicare paid $12,521 for them. Every service was in an office.
Medicare services, 2021328
Paid by Medicare$12,521
Procedure codes6
Dr. Halloran's Medicare services by type, 2017 to 2021
- 2017
- 2021
- Other services
- 2017: 02021: 328
- Office and hospital visits
- 2017: 1822021: 0100%
Dr. Halloran compared with the Maryland median for internists, 2021
- Dr. Halloran
- Maryland median
- Medicare services
- 328vs 65650% below
- Part D claims
- 6,605vs 30921.4 times
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Halloran's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Halloran and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Elizabeth Halloran's patients have a median age of 62
Across all payers, Dmand AI patient panel data puts Dr. Halloran's median patient age at 62, with 57% women.
Dr. Halloran's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women57%
- Men43%
Source: Dmand AI Patient Panel Data
Dr. Elizabeth Halloran wrote 7,202 Medicare Part D claims in 2024
In 2024, Dr. Halloran wrote 7,202 Medicare Part D claims for 641 patients. 84% of them were for generic drugs. CMS names the drug for 6,605 of them, across 105 drugs with 11 or more claims each, at $221,849 in total drug cost. In 2023, CMS named 6,090 claims across 108 drugs.
Part D claims, 20247,202
Drugs named by CMS105
Total drug cost$221,849
Part D patients641
Dr. Halloran's Part D claims by kind of drug, 2024
- Generic6,073 claims84%
- Brand-name984 claims14%
- Other145 claims2%
Dr. Halloran's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Halloran's Part D claims, 2024
- Opioids3%191 of 7,202 claims
- Antibiotics1%39 of 7,202 claims
- Antipsychotics, patients 65 and over0%18 of 7,202 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6,0902024: 6,6058%
Drugs named by CMS: 105 in 2024, 108 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Elizabeth Halloran has 1 publication on record
Dmand AI links 1 paper to Dr. Halloran in 2020.
Papers1
Recent publications by Dr. Halloran
See who Dr. Halloran researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Halloran works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Elizabeth Halloran received $16 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Halloran from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Sunovion Pharmaceuticals Inc. paid the most, $16.
Companies that paid Dr. Halloran the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Elizabeth Halloran graduated from University of Maryland School of Medicine
Dr. Halloran graduated from University of Maryland School of Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Elizabeth Halloran's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Elizabeth Halloran
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Elizabeth Halloran's NPI number?
Dr. Elizabeth Halloran's NPI number is 1275501900. It was assigned on March 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Elizabeth Halloran?
Dr. Elizabeth Halloran is an internist in Baltimore, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Elizabeth Halloran practice?
Dr. Halloran practices at 815 E Pratt St, Baltimore, MD 21202. Dr. Halloran's primary practice is Kaiser Permanente Baltimore Harbor Medical Center in Baltimore, Maryland. Dmand AI also links Dr. Halloran to 1 group practice or clinic.
What is Dr. Elizabeth Halloran's office phone number?
The practice phone on file for Dr. Halloran is (410) 637-5700.
What is Dr. Elizabeth Halloran's medical license number?
Dr. Halloran holds Maryland license D0051135.
What medical group is Dr. Elizabeth Halloran part of?
Dr. Halloran is linked to Mid-Atlantic Permanente Medical Group.
Does Dr. Elizabeth Halloran accept Medicare?
Yes. CMS data shows Dr. Halloran billed Medicare for 328 services in 2021.
What services does Dr. Elizabeth Halloran bill to Medicare?
In 2021, Dr. Halloran's most billed Medicare services were medical service (0001A), medical service (0002A) and medical service (0011A).
Where did Dr. Elizabeth Halloran go to medical school?
Dr. Halloran graduated from University of Maryland School of Medicine in 1992.
What drugs does Dr. Elizabeth Halloran prescribe most?
In 2024 Medicare Part D data, Dr. Halloran's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
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Has Dr. Elizabeth Halloran received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Dr. Halloran from 1 company from 2017 to 2017. The largest total came from Sunovion Pharmaceuticals Inc.
How long has Dr. Elizabeth Halloran been practicing?
Dr. Halloran graduated from medical school in 1992, 34 years ago.
Does Dr. Elizabeth Halloran do research?
Dmand AI links 1 publication to Dr. Halloran.
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