DR. MARK HOWARD TERRIS MD
NPI 1073673505
Otolaryngology in Largo, MD
About Dr. Mark Howard Terris Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK HOWARD TERRIS MD (NPI 1073673505) is an individual otolaryngology provider in Largo, Maryland, licensed in Maryland (D0047366) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Holy Cross Hospital, and is a graduate of University Of California, San Francisco School Of Medicine (1989).
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
Dr. Mark Howard Terris 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 Reassignment
Medicare enrollment records show Mark Terris reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Largo, MD 20774
- Reassigned Medicare billing, District of Columbia enrollment
- Also billed through NPI 1730200965 (District of Columbia), NPI 1578638425 (District of Columbia), NPI 1073678637 (District of Columbia), NPI 1497023188 (District of Columbia)
- 752 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Holy Cross Hospital
Acute Care Hospitals · Silver Spring, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20774 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.
LARGO, MD 20774
UPPER MARLBORO, MD 20774
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 Mark Terris's NPI number?
The NPI number for Mark Terris is 1073673505. It was assigned to this individual provider in the NPPES registry on December 12, 2006.
Where is Mark Terris located?
Mark Terris practices at 1221 Mercantile Lane, Largo, MD 20774. The listed phone number is (301) 618-5500.
What is Mark Terris's specialty?
The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.
Is Mark Terris enrolled in Medicare?
Yes. Mark Terris 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 organization bills Medicare for Mark Terris's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Terris reassigns Medicare benefits to Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Largo, MD). The 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 Mark Terris's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Mark Terris affiliated with any hospitals?
According to CMS data, Mark Terris is affiliated with Holy Cross Hospital.
When was this NPI record last updated?
The NPPES record for Mark Terris was last updated on January 19, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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. Mark Howard Terris, MD · NPI 1073673505
Otolaryngology physician in Largo, Maryland. Individual provider, active in the CMS NPPES registry since December 12, 2006.
## Identity
- **NPI:** 1073673505 (Entity type: Individual)
- **Enumerated:** December 12, 2006
- **Primary specialty:** Otolaryngology · taxonomy 207Y00000X
- **State license:** D0047366 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 1221 MERCANTILE LANE, Largo, MD 20774-5374
- **Phone:** (301) 618-5500
## 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:** Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1366781700, Largo, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 1989
## Record status
- **NPPES last updated:** January 19, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1073673505) · Data from the CMS NPPES public registry.