Mark Asmussen, P.A.
NPI 1134427602 · Physician Assistant · Brenham, TX
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Asmussen, P.A. is a Physician Assistant provider in Brenham, TX (NPI 1134427602).
Provider details
- NPI number
- 1134427602
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Male
- Sole proprietor
- No
- License
- PA07059 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
474 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 | 223 | $101 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 90 | $72 |
| Automated Urinalysis Test81003 | 42 | $2 |
| 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 | 41 | $13 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 35 | $105 |
| Injection of Drug Or Substance Under Skin Or Into Muscle |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methylprednisolone | 104 | 101 |
| Azithromycin | 53 | 51 |
| Doxycycline Monohydrate | 53 | 49 |
| Levothyroxine Sodium | 52 | 18 |
| Rosuvastatin Calcium | 51 | 23 |
| Atorvastatin Calcium | 49 | 22 |
| Gabapentin | 43 | 20 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-03-08
- Last updated
- 2025-09-08
- Certified
- 2025-09-08
Frequently asked questions
- What is Mark Asmussen's NPI number?
- Mark Asmussen's National Provider Identifier (NPI) is 1134427602, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Asmussen's specialty?
- Mark Asmussen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mark Asmussen located?
- Mark Asmussen's practice location on file with NPPES is 600 N Park St, Brenham, TX 77833-2610.
- What is Mark Asmussen's phone number?
- The practice phone number listed in the NPPES registry for Mark Asmussen is (979) 836-6153.
- Does Mark Asmussen accept Medicare?
- Mark Asmussen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Asmussen's NPI active?
- Yes — Mark Asmussen's NPI (1134427602) is active in the NPPES registry as of the last update on 2025-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.