MARGARET ANN LAMMERT MD
NPI 1083175020
Emergency Medicine in Brooklyn, NY
About Margaret Ann Lammert Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET ANN LAMMERT MD (NPI 1083175020) is an individual emergency medicine provider in Brooklyn, New York, licensed in New York (320997) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Suny/downstate University Hospital Of Brooklyn, and is a graduate of Emory University School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses
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
Margaret Ann Lammert 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 Reassignment
Medicare enrollment records show Margaret Lammert reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Brooklyn, NY 11203
- Reassigned Medicare billing, New York enrollment
- 63 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Suny/Downstate University Hospital Of Brooklyn
Acute Care Hospitals · Brooklyn, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11203 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
BROOKLYN, NY 11203
BROOKLYN, NY 11203
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 Margaret Lammert's NPI number?
The NPI number for Margaret Lammert is 1083175020. It was assigned to this individual provider in the NPPES registry on March 30, 2019.
Where is Margaret Lammert located?
Margaret Lammert practices at 450 Clarkson Ave, Brooklyn, NY 11203. The listed phone number is (718) 270-4580.
What is Margaret Lammert's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Margaret Lammert enrolled in Medicare?
Yes. Margaret Lammert 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 organization bills Medicare for Margaret Lammert's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Lammert reassigns Medicare benefits to University Hospital Of Brooklyn Suny Downstate Health Sciences Univers (Brooklyn, NY). 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 Margaret Lammert's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Margaret Lammert affiliated with any hospitals?
According to CMS data, Margaret Lammert is affiliated with Suny/Downstate University Hospital Of Brooklyn.
When was this NPI record last updated?
The NPPES record for Margaret Lammert was last updated on August 29, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Margaret Ann Lammert, MD · NPI 1083175020
Emergency Medicine physician in Brooklyn, New York. Individual provider, active in the CMS NPPES registry since March 30, 2019.
## Identity
- **NPI:** 1083175020 (Entity type: Individual)
- **Enumerated:** March 30, 2019
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 320997 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 450 CLARKSON AVE, Brooklyn, NY 11203-2012
- **Phone:** (718) 270-4580
## 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:** University Hospital Of Brooklyn Suny Downstate Health Sciences Univers (NPI 1740853340, Brooklyn, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Emory University School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** August 29, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1083175020) · Data from the CMS NPPES public registry.