Trent Mazer, MD
Internal Medicine Physician · Harrisonburg, VA
Trent Mazer, MD is an internal medicine physician with a practice address in Harrisonburg, Virginia, and NPI 1588158109, issued on Jun 18, 2018. Check the license (Virginia 0101272901, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Trent Mazer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 0101272901 VA
4301114569 MI
4351034175 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1790 E Market St Ste 64B, Harrisonburg, VA 22801
- Phone
- (540) 564-5666
- Enumerated
- Jun 18, 2018
- Record last updated
- Aug 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210817001433); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,599 in Virginia → Look up another NPI →
Also registered at 1790 E Market St Ste 64B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brooke Ashley, NPAcute Care Nurse Practitioner1750831731
- Pamela Bailey, PA-CMedical Physician Assistant1043222086
- Erica Formato, MDFamily Medicine Physician1699161679
- Ashley Hudson, NPFamily Medicine Physician1770316150
- Melissa Kollman, P.A.Physician Assistant1366841322
- Gilbert Rice, DOFamily Medicine Physician1033347620
Verify Trent Mazer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101272901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average internal medicine physician in 2024
8,821 Medicare Part D claims for 716 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 15 claims were for opioids.
Most prescribed
- Atorvastatin Calcium540 claims
- Levothyroxine Sodium359 claims
- Amlodipine Besylate341 claims
- Omeprazole285 claims
- Lisinopril279 claims
- Losartan Potassium268 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.
The MIPS final score for 2023 (Medicare payment program): 95.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Rmh Medical Group LLCBroadway, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Trent Mazer among 3,599 internal medicine physician records in Virginia
Trent Mazer, MD is one of 3,599 internal medicine physician records with a practice address in Virginia. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 81% of them.
- NPI issued2018 · 81% of these records are older, 17% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2018 · median 2003 among the 2,234 with a school on file
- Record last updated2021 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 internal medicine physician records list a practice address in Harrisonburg
They are 17 of the 1,385 NPPES records with a practice address in Harrisonburg, and 3,599 internal medicine physician records in Virginia.
All 3,599 in Virginia → Every provider in Harrisonburg → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Bahleda, MDHarrisonburg, VA 228011144235953
- Harry Crawford, M.D.Harrisonburg, VA 228011982783973
- Jena Crisler, DOHarrisonburg, VA 228011720093511
- Everett Ford, MDRockingham, VA 228011639164783
- Maria Hernandez, M.D.Harrisonburg, VA 228011750465951
- Perviz Heyat, MDHarrisonburg, VA 228011972518785
- Kathleen Kelley, MDHarrisonburg, VA 228011992760797
- Fletcher Matthews, M.D.Rockingham, VA 228011437157633
Common questions
What is Trent Mazer, MD's NPI number?
Trent Mazer, MD's National Provider Identifier (NPI) is 1588158109, issued on Jun 18, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Trent Mazer, MD located?
The NPPES record lists a practice address at 1790 E Market St Ste 64B, Harrisonburg, VA, 22801. Phone: (540) 564-5666. Providers update this record themselves, so call before visiting.
How can I verify Trent Mazer, MD's license?
NPPES lists Virginia license number 0101272901, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Trent Mazer, MD prescribe under Medicare Part D?
In 2024, Trent Mazer, MD had 8,821 Medicare Part D claims for 716 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Trent Mazer, MD's MIPS final score?
The 2023 MIPS final score is 95.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.