Margaret Claire Deroos, DO
Family Medicine Physician · Johnson City, TN
Margaret Claire Deroos, DO is a family medicine physician with a practice address in Johnson City, Tennessee, and NPI 1295298875, issued on Apr 10, 2019. Check the license (Tennessee 4950, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Margaret Claire Deroos
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 4950 TN
Self-reported in NPPES; status is on the state search - Practice location
- 205 Summer Rose LN, Johnson City, TN 37601
- Phone
- (256) 226-0236
- Enumerated
- Apr 10, 2019
- Record last updated
- Jul 3, 2024
- Medicare enrollment
- Enrolled (PECOS I20250117001402); accepts Medicare assignment
- Medical or professional school
- Edward Via Col Of Osteo Medicine-Carolinas Campus, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,674 in Tennessee → Look up another NPI →
Also registered at 205 Summer Rose LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Deroos, DOFamily Medicine Physician1043773658
Verify Margaret Claire Deroos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 4950Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
19 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Duke University Affiliated Physicians, Inc.Apex, NC
- Legacy Healthcare Services IncDurham, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Claire Deroos among 2,674 family medicine physician records in Tennessee
Margaret Claire Deroos, DO is one of 2,674 family medicine physician records with a practice address in Tennessee. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2019 · median 2004 among the 1,685 with a school on file
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
119 family medicine physician records list a practice address in Johnson City
They are 119 of the 3,807 NPPES records with a practice address in Johnson City, and 2,674 family medicine physician records in Tennessee.
All 2,674 in Tennessee → Every provider in Johnson City → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Lori Church, MDJohnson City, TN 376011164466827
- Bendik Clark, M.D.Johnson City, TN 376011578566824
- Zvjezdana Dekic-Djordjevic, M.D.Johnson City, TN 376011275533259
- Paul Derden, MDJohnson City, TN 376011780655613
- Marianne Filka, MDJohnson City, TN 376011174525307
- Bryan Flint, MDJohnson City, TN 376011932160371
- Jeffrey Hopland, M.D.Johnson City, TN 376011497755490
- Clay Renfro, MDJohnson City, TN 376011477520732
Common questions
What is Margaret Claire Deroos, DO's NPI number?
Margaret Claire Deroos, DO's National Provider Identifier (NPI) is 1295298875, issued on Apr 10, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Claire Deroos, DO located?
The NPPES record lists a practice address at 205 Summer Rose LN, Johnson City, TN, 37601. Phone: (256) 226-0236. Providers update this record themselves, so call before visiting.
How can I verify Margaret Claire Deroos, DO's license?
NPPES lists Tennessee license number 4950, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Margaret Claire Deroos, DO prescribe under Medicare Part D?
In 2024, Margaret Claire Deroos, DO had 19 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.