Medicare Enrolled
Dr. Teresa Irwin, MD
Obstetrics & Gynecology · San Marcos, TX
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Irwin from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Irwin
Dr. Teresa Irwin is an obstetrics & gynecology specialist in San Marcos, TX, with 21 years of NPI registration. Based on federal Medicare data, Dr. Irwin performed 4,168 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Irwin received a total of $19,550 from 27 pharmaceutical and/or device companies across 202 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Irwin is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 21 years of NPI registration
▲ Top 1% volume in TX
$19,550 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗4,168
Medicare services
Top 1% in TX for obstetrics & gynecology
Not available
Unique patients (not deduplicated)
$39
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Botox injection, per unit An injection of onabotulinumtoxinA, a medication used to temporarily relax muscles or reduce gland activity. The dose is measured in units, with this code representing a single unit administered. |
2,700 | $5 | $17 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
227 | $62 | $219 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
195 | $92 | $325 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
194 | $3 | $10 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
80 | $42 | $132 |
| Insertion of temporary bladder tube | 66 | $34 | $165 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
58 | $78 | $327 |
| Ceftriaxone antibiotic injection This code represents the administration of ceftriaxone sodium, an antibiotic medication. The charge is calculated for every 250 mg of the drug administered. |
57 | $0 | $5 |
| Transvaginal pelvic ultrasound An ultrasound exam using a probe inserted into the vagina to image the uterus, ovaries, fallopian tubes, cervix, and surrounding pelvic structures. |
48 | $87 | $371 |
| Bladder ultrasound after voiding An ultrasound scan performed after urination to measure the amount of urine remaining in the bladder. |
34 | $8 | $57 |
| Fitting and insertion of vaginal support device A procedure to measure, fit, and insert a device designed to support vaginal structures. |
34 | $53 | $233 |
| Complex urodynamic pressure measurement A test that measures the pressure of urine flow in the bladder along with urethral and voiding pressures. |
32 | $281 | $1,031 |
| Electronic assessment of bladder emptying A test that uses electronic monitoring to evaluate how well the bladder empties urine. |
32 | $5 | $190 |
| Non-needle muscle activity measurement of bladder and bowel openings This procedure measures and records the electrical activity of muscles at the bladder and bowel openings without using needles. |
32 | $25 | $584 |
| Abdominal device insertion with pressure and urine flow study A procedure involving the placement of a device into the abdomen, accompanied by a study to measure pressure and urine flow rate. |
32 | $145 | $500 |
| Non-rubber pessary A non-rubber device inserted into the vagina to support pelvic organs. |
28 | $50 | $110 |
| Cystoscopy with chemical ablation of bladder A procedure where a camera is used to examine the bladder and a chemical agent is applied to destroy abnormal tissue. |
27 | $288 | $990 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
25 | $122 | $439 |
| Repair of rectocele Surgical repair of a bulge where the rectum protrudes into the back wall of the vagina. |
24 | $315 | $2,131 |
| Sacral nerve stimulator electrode insertion A procedure to place an electrode array in the sacral area to deliver electrical stimulation to the nerves. |
23 | $737 | $2,489 |
| Office visit for established patient An office visit for an existing patient that may not require the healthcare professional to be present. |
23 | $17 | $110 |
| Removal of surface implant from bone A surgical procedure to remove an implant that is attached to the surface of a bone. |
21 | $270 | $1,161 |
| Cystourethroscopy A diagnostic exam of the bladder and urethra using an endoscope to visually inspect the urinary tract. |
20 | $167 | $622 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
18 | $11 | $80 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
18 | $116 | $498 |
| Injection of implant material into bladder or urethra A procedure where implant material is injected beneath the lining of the bladder and/or urethra using an endoscope. |
17 | $113 | $887 |
| Insertion of peripheral or gastric neurostimulator generator A surgical procedure to implant the pulse generator device for a neurostimulator system. The generator is placed under the skin to deliver electrical impulses to nerves or the stomach. |
16 | $74 | $809 |
| Urethral sling procedure for female incontinence A surgical procedure that creates a supportive sling around the urethra to help control urinary leakage in women. |
14 | $337 | $2,800 |
| Vaginal defect repair using endoscope A surgical procedure to repair a defect in the vagina using an endoscope, which is a thin, lighted tube inserted into the body to visualize the area. |
14 | $756 | $2,958 |
| Insertion of artificial material for pelvic floor defect A surgical procedure to repair a pelvic floor defect by inserting artificial material to support the pelvic structures. |
12 | $195 | $784 |
| Sacral nerve stimulator electrode insertion A procedure to place an electrode in the sacral area for nerve stimulation therapy. |
12 | $437 | $2,046 |
| Imaging guidance for procedure, 60 minutes or less Use of imaging technology to guide a medical procedure. This service lasts 60 minutes or less. |
12 | $12 | $27 |
| Electronic analysis of implanted neurostimulator with complex programming This procedure involves the electronic evaluation of an implanted neurostimulator generator. It includes complex programming of spinal cord or peripheral nerve stimulators. |
12 | $32 | $240 |
| Endometrial biopsy or polyp removal A procedure to collect a tissue sample from the uterine lining or remove a polyp using a thin, lighted tube inserted through the cervix. |
11 | $1,016 | $4,500 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
0.6% high complexity
69.5% medium
29.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$19,550
Total received (2018-2024)
Avg $2,793/year across 7 years
Top 3% in TX for obstetrics & gynecology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
27
Companies
202
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,040
2023
$9,390
2022
$744
2021
$2,478
2020
$4,476
2019
$865
2018
$556
Payments by company (2024)
Astellas Pharma US Inc
$775
ABBVIE INC.
$183
MILLICENT US INC
$18
MIMEDX Group, Inc.
$16
Biogen, Inc.
$15
SHIELD THERAPEUTICS INC
$14
Aspira Women's Health Inc
$13
Organon Llc
$6
Top 3 companies account for 93.9% of 2024 payments
All-time payments by company (2018-2024) ›
Astellas Pharma US Inc
$9,539
Intuitive Surgical, Inc.
$4,769
Axonics, Inc.
$2,577
ABBVIE INC.
$638
COLOPLAST CORP
$390
Coloplast Corp
$386
Medtronic USA, Inc.
$332
Allergan, Inc.
$325
Allergan Inc.
$142
Davol Inc.
$88
AbbVie Inc.
$46
CooperSurgical, Inc.
$43
Sumitomo Pharma America, Inc.
$43
UROVANT SCIENCES INC
$34
PFIZER INC.
$20
Caldera Medical, Inc
$18
MILLICENT US INC
$18
Shield Therapeutics Inc
$18
Organon LLC
$17
MIMEDX Group, Inc.
$16
Biogen, Inc.
$15
Mylan Pharmaceuticals Inc.
$15
Lupin Inc.
$15
SHIELD THERAPEUTICS INC
$14
BOSTON SCIENTIFIC CORPORATION
$13
Aspira Women's Health Inc
$13
Organon Llc
$6
Top 3 companies account for 86.4% of all-time payments
Associated products mentioned in payments ›
ABRYSVO · ACCRUFER · ALTIS · Altis · Axonics · Axonics r-SNM System · BOTOX · BOTOX THERAPEUTIC · Bulkamid · Da Vinci Surgical System · Desara · ENTERRA · FEMRING · GEMTESA · GENERAL PELVIC ORGAN PROLAPSE · INTERSTIM · LILETTA · LO LOESTRIN FE · MYRBETRIQ · Myrbetriq · NEXPLANON · ORILISSA · OVA1 · Paragard · Phasix · Restorelle · SOLOSEC · Summit Doppler · Veozah · Xulane · ZURZUVAE
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Obstetricians & gynecologists in nearby ZIP areas
51
County median income
$85,827
Nearest hospital to ZIP centroid (approximate)
CHRISTUS SANTA ROSA HOSPITAL-SAN MARCOS
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Irwin is a clinical cardiology specialist, with above-average Medicare volume (top 1% in TX), with 21 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Irwin experienced with botox injection, per unit?
Based on Medicare claims data, Dr. Irwin performed 2,700 botox injection, per unit services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Irwin receive payments from pharmaceutical companies?
Yes. Dr. Irwin received a total of $19,550 from 27 companies across 202 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Irwin's costs compare to other obstetricians & gynecologists in San Marcos?
Dr. Irwin's average Medicare payment per service is $39. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Irwin) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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