Dr. Margee Louisias, MD
- Medicare services, 2023
- 34
- Medicare patients, 2024
- 21
- Part D claims, 2024
- 174
- Hospital affiliations
- 2
- Industry payments
- $2,897
- Practice address
- 75 Francis Street, Boston, MA 02115
- Practice phone
- Call (617) 732-5500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Louisias' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Margee Louisias is an allergist and immunologist in Boston, Massachusetts
Dr. Louisias practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Louisias' NPI, 1255590345, was assigned on June 4, 2008. Dr. Louisias holds Massachusetts license 254302.
- NPI
- 1255590345NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911155932
- NPI enumeration date
- June 4, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 732-5500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Margee Louisias practices at Brigham and Women's Hospital in Boston, Massachusetts
Dr. Louisias' primary practice is Brigham and Women's Hospital, at 75 Francis Street, Boston, MA 02115 in Suffolk County. The practice phone is (617) 732-5500.
- Brigham and Women's Hospital75 Francis Street, Boston, MA 02115 · Suffolk CountyPhone(617) 732-5500
Source: Dmand AI Affiliation Data
Dr. Margee Louisias is affiliated with 3 sites of care and 2 medical groups
Dr. Louisias' primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Louisias is also affiliated with Brigham and Women's Faulkner Hospital. The medical group on file is Brigham and Women's Hospital. Dmand AI also links Dr. Louisias to 1 more hospital outpatient department and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Margee Louisias' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Louisias practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Brigham and Women's Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mass General Brigham and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Margee Louisias is one of 106 allergists and immunologists in Massachusetts
Allergy and immunology is Dr. Louisias' primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Louisias is licensed in Massachusetts.
Specialties and state licenses
- Allergy and immunology, MassachusettsPrimary
Allergists and immunologists near Dr. Louisias
Counts of allergists and immunologists 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. Margee Louisias billed Medicare for 34 services in 2023
CMS data shows 34 Medicare services from Dr. Louisias across 1 procedure code in 2023, all of them office visits, for 21 Medicare patients. Medicare paid $2,531 for them. Every service was in an office.
Dr. Louisias' Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 442023: 3423%
Dr. Louisias compared with the Massachusetts median for allergists and immunologists, 2023
- Dr. Louisias
- Massachusetts median
- Medicare services
- 34vs 1,07197% below
- Medicare patients
- 21vs 12483% below
- Part D claims
- 75vs 18960% below
Medians across 100 allergists and immunologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Louisias' most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Louisias?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Louisias and other allergists and immunologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Margee Louisias treated 21 Medicare patients in 2024, average age 71
CMS counts 21 Medicare patients who saw Dr. Louisias in 2024. 75% of them have high cholesterol, and 71% have arthritis. Their average risk score is 1.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Louisias' median patient age at 40, with 60% women.
Chronic conditions among Dr. Louisias' Medicare patients, 2024
- High cholesterol75%
- Arthritis71%
- High blood pressure71%
- Asthma57%
Share of Medicare patients with each condition. A patient can have several.
Dr. Louisias' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women60%
- Men30%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Margee Louisias wrote 174 Medicare Part D claims in 2024
In 2024, Dr. Louisias wrote 174 Medicare Part D claims for 23 patients. 29% of them were for generic drugs. CMS names the drug for 75 of them, across 5 drugs with 11 or more claims each, at $249,122 in total drug cost. In 2023, CMS named 391 claims across 15 drugs.
Dr. Louisias' Part D claims by kind of drug, 2024
- Generic50 claims29%
- Brand-name124 claims71%
Dr. Louisias' 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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3912024: 7581%
Drugs named by CMS: 5 in 2024, 15 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
How Dr. Margee Louisias takes part in Medicare
Dr. Louisias accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Margee Louisias received $2,897 in industry payments from 2016 to 2022
CMS Open Payments shows 3 general payments to Dr. Louisias from 3 drug and device companies from 2016 to 2022. Consulting fees make up the largest share, 98% of the total. Sanofi and Genzyme US Companies paid the most, $2,826.
General payments to Dr. Louisias by program year, 2016 to 2022
General payments to Dr. Louisias by kind, 2016 to 2022
- Consulting fees$2,82698%
- Food and beverage$712%
Companies that paid Dr. Louisias the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Margee Louisias'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Margee Louisias
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. Margee Louisias' NPI number?
Dr. Margee Louisias' NPI number is 1255590345. It was assigned on June 4, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Margee Louisias?
Dr. Margee Louisias is an allergist and immunologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Margee Louisias practice?
Dr. Louisias practices at 75 Francis Street, Boston, MA 02115. Dr. Louisias' primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Louisias to 1 hospital outpatient department and 1 medical group.
What is Dr. Margee Louisias' office phone number?
The practice phone on file for Dr. Louisias is (617) 732-5500.
What is Dr. Margee Louisias' medical license number?
Dr. Louisias holds Massachusetts license 254302.
Which hospitals is Dr. Margee Louisias affiliated with?
Dr. Louisias practices at Brigham and Women's Hospital in Boston, Massachusetts. Dr. Louisias is also affiliated with Brigham and Women's Faulkner Hospital.
What medical group is Dr. Margee Louisias part of?
Dr. Louisias is linked to Brigham and Women's Hospital. Dmand AI links Dr. Louisias to 1 more medical group.
Does Dr. Margee Louisias accept Medicare?
Yes. CMS data shows Dr. Louisias billed Medicare for 34 services in 2023, and Dr. Louisias accepts Medicare assignment.
How many Medicare patients does Dr. Margee Louisias see?
CMS counts 21 Medicare patients who saw Dr. Louisias in 2024, with an average age of 71.
What services does Dr. Margee Louisias bill to Medicare?
In 2023, Dr. Louisias' most billed Medicare services were office visit, established patient (99213).
Show 3 more questionsShow fewer questions
What drugs does Dr. Margee Louisias prescribe most?
In 2024 Medicare Part D data, Dr. Louisias' most prescribed drugs by claims were Nucala, Symbicort and Dupixent Pen.
Has Dr. Margee Louisias received payments from drug or device companies?
CMS Open Payments shows $2,897 in general payments to Dr. Louisias from 3 companies from 2016 to 2022. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Margee Louisias been practicing?
Dr. Louisias graduated from medical school in 2007, 19 years ago.
Selling to allergy and immunology practices?
See allergists and immunologists in Massachusetts by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card