RUTH LAURA LAMM MD
NPI 1972624302
Emergency Medicine in Boston, MA
About Ruth Laura Lamm Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUTH LAURA LAMM MD (NPI 1972624302) is an individual emergency medicine provider in Boston, Massachusetts, licensed in Massachusetts (L-224819) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS, is affiliated with St Joseph's University Medical Center Inc, and is a graduate of Other (2005).
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
Ruth Laura Lamm 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
9Medicare enrollment records show Ruth Lamm reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Paterson, NJ 07503
- Reassigned Medicare billing, New Jersey enrollment
- Medicare enrollment name: St Josephs Healthcare Inc
- 372 clinicians in this Medicare group
Paterson, NJ 07503
- Reassigned Medicare billing, New Jersey enrollment
- 317 clinicians in this Medicare group
Paterson, NJ 07503
- Reassigned Medicare billing, New Jersey enrollment
- 88 clinicians in this Medicare group
Brooklyn, NY 11212
- Reassigned Medicare billing, New York enrollment
- 782 clinicians in this Medicare group
Elmira, NY 14901
- Reassigned Medicare billing, New York enrollment
- 72 clinicians in this Medicare group
Penn Yan, NY 14527
- Reassigned Medicare billing, New York enrollment
- 113 clinicians in this Medicare group
Atlanta, GA 30322
- Reassigned Medicare billing, Georgia enrollment
- 4,840 clinicians in this Medicare group
Atlanta, GA 30303
- Reassigned Medicare billing, Georgia enrollment
- 2,681 clinicians in this Medicare group
Lagrange, GA 30240
- Reassigned Medicare billing, Georgia enrollment
- 1,506 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Joseph's University Medical Center Inc
Acute Care Hospitals · Paterson, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 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.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Ruth Lamm's NPI number?
The NPI number for Ruth Lamm is 1972624302. It was assigned to this individual provider in the NPPES registry on April 3, 2007.
Where is Ruth Lamm located?
Ruth Lamm practices at Massachusetts General Hospital 55 Fruit Street, Boston, MA 02114. The listed phone number is (617) 724-4184.
What is Ruth Lamm's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Ruth Lamm enrolled in Medicare?
Yes. Ruth Lamm 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 Ruth Lamm's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruth Lamm reassigns Medicare benefits to 9 organizations: St. Joseph's Healthcare, Inc. (Paterson, NJ), St Josephs Medical Group PC (Paterson, NJ), St. Joseph's Emergency Physicians Inc (Paterson, NJ), Brookdale Hospital Medical Center (Brooklyn, NY), Nes Medical Services Of New York PC (Elmira, NY) and 4 more organizations, listed in the Medicare section above. 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 Ruth Lamm's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ruth Lamm accept?
Health plans from Oscar Health list Ruth Lamm 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.
Is Ruth Lamm affiliated with any hospitals?
According to CMS data, Ruth Lamm is affiliated with St Joseph's University Medical Center Inc.
When was this NPI record last updated?
The NPPES record for Ruth Lamm was last updated on July 8, 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.
# Ruth Laura Lamm, MD · NPI 1972624302
Emergency Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 3, 2007.
## Identity
- **NPI:** 1972624302 (Entity type: Individual)
- **Enumerated:** April 3, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** L-224819 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET, Boston, MA 02114
- **Phone:** (617) 724-4184
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): St. Joseph's Healthcare, Inc. (NPI 1497791297, Paterson, NJ); St Josephs Medical Group PC (NPI 1205425519, Paterson, NJ); St. Joseph's Emergency Physicians Inc (NPI 1568791192, Paterson, NJ); Brookdale Hospital Medical Center (NPI 1720028772, Brooklyn, NY); Nes Medical Services Of New York PC (NPI 1831742816, Elmira, NY); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1972624302) · Data from the CMS NPPES public registry.