MAX D RUBINSTEIN MD
NPI 1699037036
Pediatrics - Pediatric Emergency Medicine in Boston, MA
About Max D Rubinstein Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAX D RUBINSTEIN MD (NPI 1699037036) is an individual pediatric emergency medicine provider in Boston, Massachusetts, licensed in Massachusetts (274643) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Max D Rubinstein Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Max Rubinstein reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Manchester, NH 03109
- Reassigned Medicare billing, New Hampshire enrollment
- 446 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.
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 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Max Rubinstein's NPI number?
The NPI number for Max Rubinstein is 1699037036. It was assigned to this individual provider in the NPPES registry on June 12, 2012.
Where is Max Rubinstein located?
Max Rubinstein practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.
What is Max Rubinstein's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.
Is Max Rubinstein enrolled in Medicare?
Yes. Max Rubinstein is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Max Rubinstein's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Max Rubinstein reassigns Medicare benefits to Elliot Professional Services (Manchester, NH). 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 Max Rubinstein's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Max Rubinstein accept?
Health plans from Taro Health and WellSense Health Plan list Max Rubinstein 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 Max Rubinstein was last updated on October 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days 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.
# Max D Rubinstein, MD · NPI 1699037036
Pediatric Emergency Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 12, 2012.
## Identity
- **NPI:** 1699037036 (Entity type: Individual)
- **Enumerated:** June 12, 2012
- **Primary specialty:** Pediatrics - Pediatric Emergency Medicine · taxonomy 2080P0204X
- **State license:** 274643 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, Boston, MA 02115
- **Phone:** (617) 355-6000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Elliot Professional Services (NPI 1285627935, Manchester, NH), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 21, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1699037036) · Data from the CMS NPPES public registry.