Trent Mazer, MD
NPI 1588158109 · Internal Medicine Physician · Harrisonburg, VA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Trent Mazer, MD is a Internal Medicine Physician provider in Harrisonburg, VA (NPI 1588158109).
Provider details
- NPI number
- 1588158109
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301114569 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,106 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 875 | $124 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 523 | $16 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 261 | $126 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 188 | $87 |
| Administration of Influenza Virus VaccineG0008 | 47 | $31 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 125 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 540 | 158 |
| Levothyroxine Sodium | 359 | 91 |
| Amlodipine Besylate | 341 | 105 |
| Omeprazole | 285 | 77 |
| Lisinopril | 279 | 80 |
| Losartan Potassium | 268 | 86 |
| Tamsulosin Hcl |
Practice location
Mailing address
Additional practice locations (1)
- 300 Lafayette Ave Se Ste 4000Grand Rapids, MI 49503-4692Phone: (616) 685-5922
Registry dates
- Enumerated
- 2018-06-18
- Last updated
- 2021-08-18
- Certified
- 2021-08-18
Frequently asked questions
- What is Trent Mazer's NPI number?
- Trent Mazer's National Provider Identifier (NPI) is 1588158109, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Trent Mazer's specialty?
- Trent Mazer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Trent Mazer located?
- Trent Mazer's practice location on file with NPPES is 1790 E Market St Ste 64b, Harrisonburg, VA 22801-5197.
- What is Trent Mazer's phone number?
- The practice phone number listed in the NPPES registry for Trent Mazer is (540) 564-5666.
- Does Trent Mazer accept Medicare?
- Trent Mazer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Trent Mazer's NPI active?
- Yes — Trent Mazer's NPI (1588158109) is active in the NPPES registry as of the last update on 2021-08-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.