DR. PRUDENCE LAM MD
NPI 1942202320
Internal Medicine - Hematology & Oncology in Cambridge, MA
About Dr. Prudence Lam Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PRUDENCE LAM MD (NPI 1942202320) is an individual hematology & oncology provider in Cambridge, Massachusetts, licensed in Massachusetts (217283) and active in the NPI registry since August 2005. She is enrolled in Medicare PECOS, is affiliated with Mount Auburn Hospital, and is a graduate of University Of Vermont College Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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. Prudence Lam 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 Prudence Lam reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cambridge, MA 02138
- Reassigned Medicare billing, Massachusetts enrollment
- 423 clinicians in this Medicare group
Cambridge, MA 02139
- Reassigned Medicare billing, Massachusetts enrollment
- 719 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 7
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Auburn Hospital
Acute Care Hospitals · Cambridge, MABeth Israel Deaconess Medical Center
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02138 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.
CAMBRIDGE, MA 02138
CAMBRIDGE, MA 02138
CAMBRIDGE, MA 02138
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 Prudence Lam's NPI number?
The NPI number for Prudence Lam is 1942202320. It was assigned to this individual provider in the NPPES registry on August 15, 2005.
Where is Prudence Lam located?
Prudence Lam practices at 330 Mount Auburn St Wyman 3, Cambridge, MA 02138. The listed phone number is (617) 497-9646.
What is Prudence Lam's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Prudence Lam enrolled in Medicare?
Yes. Prudence Lam 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 Prudence Lam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Prudence Lam reassigns Medicare benefits to 2 organizations: Mount Auburn Professional Services Inc (Cambridge, MA) and Cambridge Public Health Commission (Cambridge, 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 Prudence Lam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Prudence Lam accept?
Health plans from Anthem Blue Cross and Blue Shield list Prudence Lam 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 Prudence Lam affiliated with any hospitals?
According to CMS data, Prudence Lam is affiliated with Mount Auburn Hospital and Beth Israel Deaconess Medical Center.
When was this NPI record last updated?
The NPPES record for Prudence Lam was last updated on November 7, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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. Prudence Lam, MD · NPI 1942202320
Hematology & Oncology physician in Cambridge, Massachusetts. Individual provider, active in the CMS NPPES registry since August 15, 2005.
## Identity
- **NPI:** 1942202320 (Entity type: Individual)
- **Enumerated:** August 15, 2005
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** 217283 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 330 MOUNT AUBURN ST, WYMAN 3, Cambridge, MA 02138-5502
- **Phone:** (617) 497-9646 · **Fax:** (617) 499-5464
## 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): Mount Auburn Professional Services Inc (NPI 1992750996, Cambridge, MA); Cambridge Public Health Commission (NPI 1487603585, Cambridge, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Vermont College Of Medicine, class of 2000
## Record status
- **NPPES last updated:** November 7, 2013
- **Other identifiers:** Medicare PIN MX7461 (MA); Medicaid 2029987 (MA); Medicare UPIN H84741 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1942202320) · Data from the CMS NPPES public registry.