Sierra Armbrust, DO
Family Medicine Physician · Chattanooga, TN
Sierra Armbrust, DO is a family medicine physician with a practice address in Chattanooga, Tennessee, and NPI 1235879461, issued on Mar 29, 2022. Check the license (Tennessee 6087, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Sierra Armbrust
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 6087 TN
Self-reported in NPPES; status is on the state search - Practice location
- 7380 Volkswagen Dr Ste 110, Chattanooga, TN 37416
- Phone
- (423) 778-8950
- Enumerated
- Mar 29, 2022
- Record last updated
- Sep 3, 2025
- Fax
- (423) 778-8951
- Medicare enrollment
- Enrolled (PECOS I20250811002210); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,674 in Tennessee → Look up another NPI →
Also registered at 7380 Volkswagen Dr Ste 110
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rebecca Carter, FNPFamily Nurse Practitioner1184962169
- Kayley MarvelFamily Medicine Physician1265991517
Verify Sierra Armbrust in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 6087Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average family medicine physician in 2024
811 Medicare Part D claims for 92 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Gabapentin77 claims
- Atorvastatin Calcium46 claims
- Levothyroxine Sodium32 claims
- Lisinopril29 claims
- Famotidine25 claims
- Omeprazole25 claims
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.
Sierra Armbrust among 2,674 family medicine physician records in Tennessee
Sierra Armbrust, 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 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 3% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2022 · median 2004 among the 1,685 with a school on file
- Record last updated2025 · 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).
130 family medicine physician records list a practice address in Chattanooga
They are 130 of the 7,377 NPPES records with a practice address in Chattanooga, and 2,674 family medicine physician records in Tennessee.
All 2,674 in Tennessee → Every provider in Chattanooga → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- David Johnson, MDChattanooga, TN 374161811974926
- Andrew Keyes, MDChattanooga, TN 374161255864229
- Kayley MarvelChattanooga, TN 374161265991517
- Matthew Rose, DOChattanooga, TN 374161992334130
- Allan Akin, MDChattanooga, TN 374151629698626
- Mary Bean, MDChattanooga, TN 374151316975303
- Derek Crouthers, MDChattanooga, TN 374151962908343
- Julia GroceChattanooga, TN 374151841752086
Common questions
What is Sierra Armbrust, DO's NPI number?
Sierra Armbrust, DO's National Provider Identifier (NPI) is 1235879461, issued on Mar 29, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Sierra Armbrust, DO located?
The NPPES record lists a practice address at 7380 Volkswagen Dr Ste 110, Chattanooga, TN, 37416. Phone: (423) 778-8950. Providers update this record themselves, so call before visiting.
How can I verify Sierra Armbrust, DO's license?
NPPES lists Tennessee license number 6087, 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 Sierra Armbrust, DO prescribe under Medicare Part D?
In 2024, Sierra Armbrust, DO had 811 Medicare Part D claims for 92 beneficiaries; 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.