Active NPI 1134427602 Individual Practitioner Male Practitioner

Mark Dwayne Asmussen , PA

Physician Assistant • Brenham, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Mark Asmussen, PA is a certified Physician Assistant practicing in Brenham, TX. With approximately 16 years of clinical experience since completing medical education in 2010, Mark Asmussen delivers high-quality medical care to the local community at 600 N PARK ST.

Mark Asmussen maintains professional affiliations with Tmh Physician Associates Pllc, Scott And White Clinic, Houston Methodist Specialty Physicians and accepts Medicare assignment.

Frequently performed procedures and clinical services include injection, methylprednisolone acetate, 1 mg, established patient outpatient office visit, automated urinalysis test. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

600 N Park St

Brenham, TX 778332610

Telephone 9798366153

Fax 9792779074

Associated Practice Facility / Clinic

🏢 Brenham Clinic Assn Facility NPI 1861500522

Medicare Profile & Education

Medical School

Other

Graduation Year

2010

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Brenham, TX

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

16 Yrs -1.4 yrs vs City Avg

City Avg: 17.4 Yrs

State Avg: 13.9 Yrs

Regional Practice Density

11 Specialists

Practicing in Brenham, TX (11140 Statewide)

Telehealth Adoption Rate

9.1% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

52.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Asmussen (16 Years) 16 Yrs

Brenham Specialty Average (17.4 Years) 17.4 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J1010 Injection, methylprednisolone acetate, 1 mg	1,320	18	$1.30	$0.13
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	223	172	$209.00	$100.83
99213 Established patient office or other outpatient visit, typically 15 minutes	90	88	$142.00	$71.72
81003 Automated urinalysis test	42	38	$20.00	$2.16
G2211 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's	41	38	$32.29	$13.10
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	35	35	$219.00	$104.80
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	31	30	$49.00	$11.57
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	12	11	$280.00	$146.91

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	509	335	$209.00	$102.82
99213 Established patient office or other outpatient visit, typically 15 minutes	86	79	$142.00	$72.84
81003 Automated urinalysis test	73	64	$20.00	$2.18
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	58	58	$219.00	$104.73
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	37	36	$49.00	$11.50
J1040 Injection, methylprednisolone acetate, 80 mg	29	29	$99.33	$11.75
G0008 Administration of influenza virus vaccine	13	13	$25.00	$24.50
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	13	13	$280.00	$145.86
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	12	12	$120.00	$75.81

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	291	200	$209.00	$103.92
99213 Established patient office or other outpatient visit, typically 15 minutes	160	139	$142.00	$74.17
81003 Automated urinalysis test	38	36	$20.00	$2.22
87804 Detection test by immunoassay with direct visual observation for influenza virus	35	18	$126.00	$16.31
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	24	24	$219.00	$107.12
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	23	22	$49.00	$11.80
J1040 Injection, methylprednisolone acetate, 80 mg	21	20	$98.50	$11.10
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	15	14	$280.00	$147.70
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$210.00	$92.25
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	13	13	$45.98	$19.07
G0008 Administration of influenza virus vaccine	12	12	$25.00	$24.50
90662 Influenza vaccine split virus, preservative free	12	12	$120.00	$68.54

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	196	154	$209.00	$106.60
99213 Established patient office or other outpatient visit, typically 15 minutes	169	144	$142.00	$74.13
81003 Automated urinalysis test	62	57	$20.00	$2.25
36415 Insertion of needle into vein for collection of blood sample	32	31	$24.00	$3.00
J1040 Injection, methylprednisolone acetate, 80 mg	25	25	$110.04	$10.58
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	24	24	$49.00	$11.73
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	11	11	$219.00	$109.62

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	41	37	$142.00	$60.01
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	27	26	$209.00	$87.85
J1040 Injection, methylprednisolone acetate, 80 mg	20	19	$110.04	$11.59
G0008 Administration of influenza virus vaccine	11	11	$25.00	$16.19

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	25	21	$142.00	$50.84

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
33533 Coronary artery bypass using artery graft, 1 graft	13	13	$3467.21	$225.56
35301 Removal of blood clot and portion of artery of neck	13	13	$2490.92	$146.28
33508 Harvest of veins for coronary artery bypass procedure using an endoscope	12	12	$33.23	$2.27

Medical Specialties & State Licenses

CMS Verified: 2025-09-08

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License TX PA07059

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Physician Assistant - Surgical

NUCC Taxonomy Code: 363AS0400X

State License TX PA07059

Definition to come...

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

309349401 (TX)

Commercial Insurance / Payer ID Texas State License

PA07059 (TX)

Hospital & Practice Group Affiliations

Scott And White Clinic

1280 Arrington Rd, College Station, TX 778458696

Phone: 9792076550

Tmh Physician Associates Pllc

None, Houston, TX 77070

Phone: 2817370899

Scott And White Clinic

600 N Park St, Brenham, TX 778332610

Phone: 9798366153

Houston Methodist Specialty Physicians

6445 Main St, Houston, TX 770301502

Phone: 7134413150

Scott And White Clinic

600 N Park St, Brenham, TX 778332610

Phone: 9798366153

Tmh Physician Associates Pllc

7575 San Felipe St, Houston, TX 770631777

Phone: 7132669955

Tmh Physician Associates Pllc

18220 State Hwy 249, Houston, TX 770704347

Phone: 2817378300

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

24 Associated Practitioners

Aurbrey Eikenhorst , FNP

Nurse Practitioner - Family

NPI 1003179813

Family Nurse Practitioner

Cherie Adams , NP

Nurse Practitioner

NPI 1013906155

Nurse Practitioner

Dr. Leonidas Pena , MD

Surgery

NPI 1043213119

Doctor of Medicine (M.D.)

Dr. Bobby Marek , MD

Internal Medicine

NPI 1063415149

Doctor of Medicine (M.D.)

Dr. Caitlin Conner , MD

Family Medicine

NPI 1144725771

Doctor of Medicine (M.D.)

Dr. Cassandra Bryant , MD

Pediatrics

NPI 1174526263

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

10 Historical Events

📍

Updated Business Mailing Address July 11, 2019

Registered at PO BOX 844658, DALLAS, TX 752844658

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 11, 2019

Physician Assistant (License #PA07059 in TX)

📍

Updated Practice Location September 19, 2018

Registered at 600 N PARK ST, BRENHAM, TX 778332610 (Tel: 9798366153)

📍

Updated Business Mailing Address September 19, 2018

Registered at PO BOX 844658 SUITE A, DALLAS, TX 752844658

✅

NPI Profile Active July 01, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location July 01, 2016

Registered at 118 SHENANDOAH DR, SUITE A, SHENANDOAH, TX 773811204 (Tel: 2815834000)

📍

Updated Business Mailing Address July 01, 2016

Registered at 118 SHENANDOAH DR, SUITE A, SHENANDOAH, TX 773811204 (Tel: 2815834000)

👤

Provider Name / Credentials Updated July 01, 2016

Recorded as MARK ASMUSSEN, P.A.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 01, 2016

Physician Assistant (License #PA07059 in TX)

🟢

Initial NPI Registration & Enumeration March 08, 2011

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1134427602

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: March 08, 2011

Last Update: September 08, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 844658

Dallas, TX 752844658

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.