TOM DENG MD
NPI 1427048966
Pathology - Anatomic Pathology & Clinical Pathology in Washington, DC
About Tom Deng Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TOM DENG MD (NPI 1427048966) is an individual anatomic pathology & clinical pathology provider in Washington, District Of Columbia, licensed in District Of Columbia (MD035004) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Medstar Montgomery Medical Center, and is a graduate of Other (1984).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Tom Deng 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 Tom Deng reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1376887844 (Maryland)
- 3,530 clinicians in this Medicare group
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia enrollment
- 861 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 18
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Medstar Montgomery Medical Center
Acute Care Hospitals · Olney, MDMedstar Saint Mary's Hospital
Acute Care Hospitals · Leonardtown, MDMedstar Southern Maryland Hospital Center
Acute Care Hospitals · Clinton, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20010 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.
WASHINGTON, DC 20010
WASHINGTON, DC 20010
WASHINGTON, DC 20010
WASHINGTON, DC 20010
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 Tom Deng's NPI number?
The NPI number for Tom Deng is 1427048966. It was assigned to this individual provider in the NPPES registry on October 26, 2005.
Where is Tom Deng located?
Tom Deng practices at 110 Irving St NW, Washington, DC 20010. The listed phone number is (202) 877-6190.
What is Tom Deng's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Tom Deng enrolled in Medicare?
Yes. Tom Deng 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 Tom Deng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tom Deng reassigns Medicare benefits to 2 organizations: Medstar Medical Group II LLC (Washington, DC) and Mgmc LLC (Washington, DC). 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 Tom Deng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Tom Deng affiliated with any hospitals?
According to CMS data, Tom Deng is affiliated with Medstar Montgomery Medical Center, Medstar Saint Mary's Hospital and Medstar Southern Maryland Hospital Center.
When was this NPI record last updated?
The NPPES record for Tom Deng was last updated on January 6, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Tom Deng, MD · NPI 1427048966
Anatomic Pathology & Clinical Pathology physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since October 26, 2005.
## Identity
- **NPI:** 1427048966 (Entity type: Individual)
- **Enumerated:** October 26, 2005
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** MD035004 (District of Columbia)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 110 IRVING ST NW, Washington, DC 20010-2976
- **Phone:** (202) 877-6190 · **Fax:** (202) 877-3820
## 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): Medstar Medical Group II LLC (NPI 1023836137, Washington, DC); Mgmc LLC (NPI 1316949654, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1984
## Record status
- **NPPES last updated:** January 6, 2015
- **Other identifiers:** Medicare UPIN I15303; Medicare ID-Type Unspecified 014747P93
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Source: [NPI Profile](https://npiprofile.com/npi/1427048966) · Data from the CMS NPPES public registry.