LONNIE THACH MD
NPI 1376002345
Internal Medicine - Nephrology in Washington, DC
About Lonnie Thach Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LONNIE THACH MD (NPI 1376002345) is an individual nephrology provider in Washington, District Of Columbia, licensed in District Of Columbia (MD500002616) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and is a graduate of Southern Illinois University School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses
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
Lonnie Thach 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 Lonnie Thach 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 enrollment
- 3,530 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- Medicare enrollment name: Whc Physician Group LLC
- 613 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 5
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.
Physician 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.
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 Lonnie Thach's NPI number?
The NPI number for Lonnie Thach is 1376002345. It was assigned to this individual provider in the NPPES registry on March 18, 2019.
Where is Lonnie Thach located?
Lonnie Thach practices at 110 Irving St NW, Washington, DC 20010. The listed phone number is (202) 877-7000.
What is Lonnie Thach's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Lonnie Thach enrolled in Medicare?
Yes. Lonnie Thach 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 Lonnie Thach's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lonnie Thach reassigns Medicare benefits to 2 organizations: Medstar Medical Group II LLC (Washington, DC) and Whc Emerg Phys (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 Lonnie Thach's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Lonnie Thach was last updated on August 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Lonnie Thach, MD · NPI 1376002345
Nephrology physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since March 18, 2019.
## Identity
- **NPI:** 1376002345 (Entity type: Individual)
- **Enumerated:** March 18, 2019
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** MD500002616 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 110 IRVING ST NW, Washington, DC 20010-3017
- **Phone:** (202) 877-7000 · **Fax:** (202) 877-7000
## 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); Whc Emerg Phys (NPI 1306260625, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Southern Illinois University School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** August 20, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1376002345) · Data from the CMS NPPES public registry.