DR. THOMAS L DIGGS DNP, AAS
NPI 1275086852
Nurse Anesthetist, Certified Registered in Hagerstown, MD
About Dr. Thomas L Diggs Dnp, Aas NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. THOMAS L DIGGS DNP, AAS (NPI 1275086852) is an individual nurse anesthetist, certified registered in Hagerstown, Maryland, licensed in Virginia (0024178326) and active in the NPI registry since July 2016. He is affiliated with Meritus Medical Center and is a graduate of Other (2016).
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
Dr. Thomas L Diggs Dnp, Aas 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
8Medicare enrollment records show Thomas Diggs reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hagerstown, MD 21742
- Reassigned Medicare billing, Maryland enrollment
- 311 clinicians in this Medicare group
Winchester, VA 22603
- Reassigned Medicare billing, Virginia enrollment
- 104 clinicians in this Medicare group
Winchester, VA 22601
- Reassigned Medicare billing, Virginia enrollment
- 154 clinicians in this Medicare group
Alexandria, VA 22310
- Reassigned Medicare billing, Virginia enrollment
- 101 clinicians in this Medicare group
Alexandria, VA 22306
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 634 clinicians in this Medicare group
Prince Frederick, MD 20678
- Reassigned Medicare billing, Maryland enrollment
- 468 clinicians in this Medicare group
Williamsburg, VA 23188
- Reassigned Medicare billing, Virginia enrollment
- 68 clinicians in this Medicare group
Pensacola, FL 32502
- Reassigned Medicare billing, Maryland enrollment
- 80 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.
Meritus Medical Center
Acute Care Hospitals · Hagerstown, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21742 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.
HAGERSTOWN, MD 21742
HAGERSTOWN, MD 21742
HAGERSTOWN, MD 21742
HAGERSTOWN, MD 21742
HAGERSTOWN, MD 21742
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 Thomas Diggs's NPI number?
The NPI number for Thomas Diggs is 1275086852. It was assigned to this individual provider in the NPPES registry on July 29, 2016.
Where is Thomas Diggs located?
Thomas Diggs practices at 11110 Medical Campus Rd, Hagerstown, MD 21742. The listed phone number is (240) 313-9800.
What is Thomas Diggs's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Thomas Diggs enrolled in Medicare?
Yes. Thomas Diggs 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 Thomas Diggs's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Diggs reassigns Medicare benefits to 8 organizations: Meritus Medical Center Inc (Hagerstown, MD), Winchester Anesthesiologists Inc (Winchester, VA), Valley Health Anesthesia Services, LLC (Winchester, VA), Ambulatory Anesthesia Associates LLC (Alexandria, VA), Northstar Anesthesia Of Virginia, LLC (Alexandria, VA) and 3 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 Thomas Diggs's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Diggs accept?
Health plans from Peak Health Insurance list Thomas Diggs 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 Thomas Diggs affiliated with any hospitals?
According to CMS data, Thomas Diggs is affiliated with Meritus Medical Center.
When was this NPI record last updated?
The NPPES record for Thomas Diggs was last updated on January 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.
# Dr. Thomas L Diggs, DNP, AAS · NPI 1275086852
Nurse Anesthetist, Certified Registered physician in Hagerstown, Maryland. Individual provider, active in the CMS NPPES registry since July 29, 2016.
## Identity
- **NPI:** 1275086852 (Entity type: Individual)
- **Enumerated:** July 29, 2016
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 0024178326 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 11110 MEDICAL CAMPUS RD, Hagerstown, MD 21742-6700
- **Phone:** (240) 313-9800
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Meritus Medical Center Inc (NPI 1245256213, Hagerstown, MD); Winchester Anesthesiologists Inc (NPI 1700841137, Winchester, VA); Valley Health Anesthesia Services, LLC (NPI 1174343610, Winchester, VA); Ambulatory Anesthesia Associates LLC (NPI 1720192230, Alexandria, VA); Northstar Anesthesia Of Virginia, LLC (NPI 1194488791, Alexandria, VA); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** January 29, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1275086852) · Data from the CMS NPPES public registry.