VIVIAN WANGMEI LAM MD
NPI 1952926073
Family Medicine in Fairfax, VA
About Vivian Wangmei Lam Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
VIVIAN WANGMEI LAM MD (NPI 1952926073) is an individual family medicine provider in Fairfax, Virginia, licensed in Pennsylvania (MD482818) and active in the NPI registry since June 2020. She is enrolled in Medicare PECOS, is affiliated with Wellspan York Hospital, and maintains 8 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 8
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
Vivian Wangmei 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 Vivian Lam reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Thurmont, MD 21788
- Reassigned Medicare billing, Pennsylvania enrollment
- 3,080 clinicians in this Medicare group
York, PA 17403
- Reassigned Medicare billing, Pennsylvania enrollment
- 272 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 2
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.
Wellspan York Hospital
Acute Care Hospitals · York, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 22033 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.
FAIRFAX, VA 22033
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 Vivian Lam's NPI number?
The NPI number for Vivian Lam is 1952926073. It was assigned to this individual provider in the NPPES registry on June 15, 2020.
Where is Vivian Lam located?
Vivian Lam practices at 3650 Joseph Siewick Dr Ste 400, Fairfax, VA 22033. The listed phone number is (703) 391-2020.
What is Vivian Lam's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Vivian Lam enrolled in Medicare?
Yes. Vivian 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 Vivian Lam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Vivian Lam reassigns Medicare benefits to 2 organizations: Wellspan Medical Group (Thurmont, MD) and York Hospital (York, PA). 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 Vivian Lam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Vivian Lam affiliated with any hospitals?
According to CMS data, Vivian Lam is affiliated with Wellspan York Hospital.
When was this NPI record last updated?
The NPPES record for Vivian Lam was last updated on June 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.
# Vivian Wangmei Lam, MD · NPI 1952926073
Family Medicine physician in Fairfax, Virginia. Individual provider, active in the CMS NPPES registry since June 15, 2020.
## Identity
- **NPI:** 1952926073 (Entity type: Individual)
- **Enumerated:** June 15, 2020
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** MD482818 (Pennsylvania)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3650 JOSEPH SIEWICK DR STE 400, Fairfax, VA 22033-1715
- **Phone:** (703) 391-2020
## 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): Wellspan Medical Group (NPI 1881762995, Thurmont, MD); York Hospital (NPI 1114885480, York, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Virginia Commonwealth University, School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** June 22, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1952926073) · Data from the CMS NPPES public registry.