DR. MATTHEW SIEGER M.D.
NPI 1083807549
Anesthesiology in Brooklyn, NY
About Dr. Matthew Sieger M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MATTHEW SIEGER M.D. (NPI 1083807549) is an individual anesthesiology provider in Brooklyn, New York and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS and is a graduate of Icahn School Of Medicine At Mount Sinai (2006).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Matthew Sieger 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
5Medicare enrollment records show Matthew Sieger reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fall River, MA 02721
- Reassigned Medicare billing, Massachusetts enrollment
- 347 clinicians in this Medicare group
Fall River, MA 02720
- Reassigned Medicare billing, Massachusetts enrollment
- 192 clinicians in this Medicare group
Dartmouth, MA 02747
- Reassigned Medicare billing, Massachusetts enrollment
- 79 clinicians in this Medicare group
Acton, MA 01720
- Reassigned Medicare billing, Massachusetts enrollment
- 125 clinicians in this Medicare group
Waltham, MA 02451
- Reassigned Medicare billing, Massachusetts enrollment
- 90 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 4
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.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BROOKLYN, NY 11219
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 Matthew Sieger's NPI number?
The NPI number for Matthew Sieger is 1083807549. It was assigned to this individual provider in the NPPES registry on August 19, 2007.
Where is Matthew Sieger located?
Matthew Sieger practices at 950 49th St Apt 3G, Brooklyn, NY 11219. The listed phone number is (718) 283-6000.
What is Matthew Sieger's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Matthew Sieger enrolled in Medicare?
Yes. Matthew Sieger 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 Matthew Sieger's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Sieger reassigns Medicare benefits to 5 organizations: Steward Medical Group, Inc (Fall River, MA), North American Partners In Anesthesia Massachusetts LLC (Fall River, MA), Anesthesia Professionals, Inc. (Dartmouth, MA), Gbaa Holdings, PLLC (Acton, MA) and Jjm Medical Services, PC (Waltham, MA). 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 Matthew Sieger's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Matthew Sieger accept?
Health plans from Taro Health list Matthew Sieger 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.
When was this NPI record last updated?
The NPPES record for Matthew Sieger was last updated on August 19, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Matthew Sieger, M.D. · NPI 1083807549
Anesthesiology physician in Brooklyn, New York. Individual provider, active in the CMS NPPES registry since August 19, 2007.
## Identity
- **NPI:** 1083807549 (Entity type: Individual)
- **Enumerated:** August 19, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **Sole proprietor:** Yes
## Practice location
- **Address:** 950 49TH ST, APT 3G, Brooklyn, NY 11219-2938
- **Phone:** (718) 283-6000
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Steward Medical Group, Inc (NPI 1043711914, Fall River, MA); North American Partners In Anesthesia Massachusetts LLC (NPI 1457867020, Fall River, MA); Anesthesia Professionals, Inc. (NPI 1659346443, Dartmouth, MA); Gbaa Holdings, PLLC (NPI 1790299592, Acton, MA); Jjm Medical Services, PC (NPI 1952548265, Waltham, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Icahn School Of Medicine At Mount Sinai, class of 2006
## Record status
- **NPPES last updated:** August 19, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1083807549) · Data from the CMS NPPES public registry.