Dr. Marissa Beiling , DO
Surgery • Fort Sam Houston, TX
3551 Roger Brooke Dr
Fort Sam Houston, TX 782344504
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on March 9, 2017; this date does not establish years in practice.
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Published CMS data list 32 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Oxycodone Hcl — 32 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 70% of clinicians listed under Surgery in Texas (2024, 936 clinicians with data). Median for this group: 70. Middle half: 31 to 145.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 20 in 2019 to 32 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2019–2024.
Practice Location & Contact Primary Location
3551 Roger Brooke Dr
Fort Sam Houston, TX 782344504
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
32 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$113 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
NPI first issued
2017
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Beiling has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Beiling as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Fort Sam Houston and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 70% of clinicians listed under Surgery in Texas (2024, 936 clinicians with data). Median for this group: 70. Middle half: 31 to 145.
Too few clinicians listed under Surgery in Fort Sam Houston have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 80% of clinicians listed under Surgery in Texas (2024, 936 clinicians with data). Median for this group: $502. Middle half: $180 to $1,728.
Too few clinicians listed under Surgery in Fort Sam Houston have Medicare Part D data for 2024 to compare.
34 active clinicians are listed under Surgery with a practice address in Fort Sam Houston, TX (2,193 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Fort Sam Houston
2.9% of these 34 clinicians have the CMS telehealth indicator.
47.1% of these 34 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 60% from 20 in 2019 to 32 in 2024.
- 2019: 20
- 2023: 19
- 2024: 32
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30-day fills
30-day fills increased 60% from 20 in 2019 to 32 in 2024.
- 2019: 20
- 2023: 19
- 2024: 32
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Part D drug cost
Part D drug cost went from $88 in 2019 to $113 in 2024.
- 2019: $88
- 2023: $74
- 2024: $113
Sources: CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Oxycodone Hcl | Oxycodone Hcl | 32 | 81 | $112.94 | 32 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-07-25NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL SURGERY
I20260626002259
OH
9436486354
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.), Master of Public Health, Master of Business Administration, MACC
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Psychiatric/Mental Health
Nurse Practitioner
Physician Assistant
Physician Assistant (Certified)
Urology
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant - Surgical
Physician Assistant
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 3551 ROGER BROOKE DR, FORT SAM HOUSTON, TX 782344504 (Tel: 2109166500)
Registered at 3551 ROGER BROOKE DR, FORT SAM HOUSTON, TX 782344504
Recorded as MARISSA BEILING, DO
NPI status registered as active in NPPES database
Registered at 200 MULLINS DR, LEBANON, OR 973553983 (Tel: 9413218643)
Registered at 200 MULLINS DR, LEBANON, OR 973553983 (Tel: 9413218643)
Recorded as MARISSA BEILING
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Fort Sam Houston
- Dr. Michael Albrecht, MD
- Dr. Jordan Silverman, MD
- Dr. Timothy Schaffner, MD
- Matthew Wynn
- Dr. Thomas Mitchell, MD
- Dr. Brian Sonka, MD
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Mailing Address
3551 Roger Brooke Dr
Fort Sam Houston, TX 782344504