DR. THIRI S DEMARS M.D., M.P.H. (C)
NPI 1235525510
Family Medicine in Solomons, MD
About Dr. Thiri S Demars M.d., M.p.h. (c) NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. THIRI S DEMARS M.D., M.P.H. (C) (NPI 1235525510) is an individual family medicine provider in Solomons, Maryland, licensed in Maryland (D0093116) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS, is affiliated with University Of Md Charles Regional Medical Center, and maintains a secondary practice location in Prince Frederick.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
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. Thiri S Demars M.d., M.p.h. (c) 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
6Medicare enrollment records show Thiri Demars reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Solomons, MD 20688
- Reassigned Medicare billing, Maryland enrollment
- 57 clinicians in this Medicare group
La Plata, MD 20646
- Reassigned Medicare billing, Maryland enrollment
- 51 clinicians in this Medicare group
Silver Spring, MD 20910
- Reassigned Medicare billing, District of Columbia, Maryland and Virginia enrollments
- 62 clinicians in this Medicare group
Silver Spring, MD 20910
- Reassigned Medicare billing, District of Columbia, Maryland and Virginia enrollments
- 62 clinicians in this Medicare group
Wheaton, MD 20902
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 309 clinicians in this Medicare group
Fulton, MD 20759
- Reassigned Medicare billing, District of Columbia, Maryland and Virginia enrollments
- 82 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 7
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.
University Of MD Charles Regional Medical Center
Acute Care Hospitals · La Plata, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20688 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SOLOMONS, MD 20688
SOLOMONS, MD 20688
SOLOMONS, MD 20688
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 Thiri Demars's NPI number?
The NPI number for Thiri Demars is 1235525510. It was assigned to this individual provider in the NPPES registry on April 13, 2015. The provider is also known as Dr. Thiri Sandar Bickel M.D., Mph.
Where is Thiri Demars located?
Thiri Demars practices at 14090 Hg Trueman Rd Ste 2100, Solomons, MD 20688. The listed phone number is (410) 394-3712.
What is Thiri Demars's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Thiri Demars enrolled in Medicare?
Yes. Thiri Demars 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 Thiri Demars's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thiri Demars reassigns Medicare benefits to 6 organizations: Calverthealth Medical Group, LLC (Solomons, MD), Mdics At Civista LLC (La Plata, MD), Ennoble Hc Dmv II LLC (Silver Spring, MD), Ennoble Hc Dmv III LLC (Silver Spring, MD), Medstar Urgent Care, LLC (Wheaton, MD) and 1 more organization, 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 Thiri Demars's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Thiri Demars affiliated with any hospitals?
According to CMS data, Thiri Demars is affiliated with University Of MD Charles Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Thiri Demars was last updated on May 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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. Thiri S Demars, M.D., M.P.H. (C) · NPI 1235525510
Family Medicine physician in Solomons, Maryland. Individual provider, active in the CMS NPPES registry since April 13, 2015.
## Identity
- **NPI:** 1235525510 (Entity type: Individual)
- **Enumerated:** April 13, 2015
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** D0093116 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 14090 HG TRUEMAN RD STE 2100, Solomons, MD 20688-3151
- **Phone:** (410) 394-3712 · **Fax:** (410) 394-3714
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Calverthealth Medical Group, LLC (NPI 1396534418, Solomons, MD); Mdics At Civista LLC (NPI 1225323496, La Plata, MD); Ennoble Hc Dmv II LLC (NPI 1134002900, Silver Spring, MD); Ennoble Hc Dmv III LLC (NPI 1922981695, Silver Spring, MD); Medstar Urgent Care, LLC (NPI 1871843409, Wheaton, MD); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Maryland School Of Medicine, class of 2014
## Record status
- **NPPES last updated:** May 9, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1235525510) · Data from the CMS NPPES public registry.