BENJAMIN S GRIMMNITZ MD
NPI 1962745539
Emergency Medicine in Boston, MA
About Benjamin S Grimmnitz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BENJAMIN S GRIMMNITZ MD (NPI 1962745539) is an individual emergency medicine provider in Boston, Massachusetts, licensed in Massachusetts (256208) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with Lowell General Hospital, and is a graduate of Icahn School Of Medicine At Mount Sinai (2013).
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
Benjamin S Grimmnitz 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 Reassignments
2Medicare enrollment records show Benjamin Grimmnitz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lowell, MA 01854
- Reassigned Medicare billing, Massachusetts enrollment
- 49 clinicians in this Medicare group
Springfield, VT 05156
- Reassigned Medicare billing, Vermont enrollment
- 153 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 6
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.
Lowell General Hospital
Acute Care Hospitals · Lowell, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02118 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
BOSTON, MA 02118
BOSTON, MA 02118
BOSTON, MA 02118
BOSTON, MA 02118
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 Benjamin Grimmnitz's NPI number?
The NPI number for Benjamin Grimmnitz is 1962745539. It was assigned to this individual provider in the NPPES registry on April 2, 2013.
Where is Benjamin Grimmnitz located?
Benjamin Grimmnitz practices at 1 Boston Medical Ctr Pl Dowling 1 South Room 1322, Boston, MA 02118. The listed phone number is (617) 414-4929.
What is Benjamin Grimmnitz's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Benjamin Grimmnitz enrolled in Medicare?
Yes. Benjamin Grimmnitz 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 Benjamin Grimmnitz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Benjamin Grimmnitz reassigns Medicare benefits to 2 organizations: Merrimack Valley Emergency Associates, Inc. (Lowell, MA) and Springfield Hospital (Springfield, VT). 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 Benjamin Grimmnitz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Benjamin Grimmnitz affiliated with any hospitals?
According to CMS data, Benjamin Grimmnitz is affiliated with Lowell General Hospital.
When was this NPI record last updated?
The NPPES record for Benjamin Grimmnitz was last updated on July 18, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Benjamin S Grimmnitz, MD · NPI 1962745539
Emergency Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 2, 2013.
## Identity
- **NPI:** 1962745539 (Entity type: Individual)
- **Enumerated:** April 2, 2013
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 256208 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 BOSTON MEDICAL CTR PL, DOWLING 1 SOUTH ROOM 1322, Boston, MA 02118-2908
- **Phone:** (617) 414-4929
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Merrimack Valley Emergency Associates, Inc. (NPI 1821280959, Lowell, MA); Springfield Hospital (NPI 1033225875, Springfield, VT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Icahn School Of Medicine At Mount Sinai, class of 2013
## Record status
- **NPPES last updated:** July 18, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1962745539) · Data from the CMS NPPES public registry.