Dr. Mark W Grier , MD
Pediatrics • Austin, TX
1301 S, Capital Of Texas Hwy, Building A Ste.230
Austin, TX 78746
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
1301 S, Capital Of Texas Hwy
Building A Ste.230
Austin, TX 78746
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
Pediatrics: NPPES taxonomy is a reported classification, not proof of board certification.
Open Payments general payments, program year 2023
All general payments: $120.09 across 6 records.
By nature of payment
- Food and Beverage: $120.09 across 6 records.
Reporting-company totals
- GlaxoSmithKline, LLC.: $75.84 across 4 records.
- Tris Pharma Inc: $44.25 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2023 (published June 30, 2026).
NPI first issued
2006
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.
Compared with the same specialty in Austin and Texas
469 active clinicians are listed under Pediatrics with a practice address in Austin, TX (5,642 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Austin
0% of these 469 clinicians have the CMS telehealth indicator.
8.5% of these 469 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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Industry payments (Open Payments)
Industry payments (Open Payments) went from $14.39 in 2020 to $120.09 in 2023.
- 2020: $14.39
- 2021: $55.94
- 2022: $43.14
- 2023: $120.09
Sources: CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $120.09.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
PEDIARIX | General | $22.70 |
| Tris Pharma Inc |
Food and Beverage
In-kind items and services
|
Dyanavel XR | General | $22.31 |
| Tris Pharma Inc |
Food and Beverage
In-kind items and services
|
Dyanavel XR | General | $21.94 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
BEXSERO | General | $20.66 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
BEXSERO | General | $16.94 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
BEXSERO | General | $15.54 |
Source: CMS Open Payments, program year 2023, released June 30, 2026.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-03-24NUCC Taxonomy Code: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Additional State Medicaid & Healthcare Payer Identifiers
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1301 S, CAPITAL OF TEXAS HWY, BUILDING A STE.230, AUSTIN, TX 78746 (Tel: 5123287666)
Registered at 1301 S, CAPITAL OF TEXAS HWY, BUILDING A STE.230, AUSTIN, TX 78746 (Tel: 5123287666)
NPI status registered as active in NPPES database
Registered at 4515 SETON CENTER PKWY #220, AUSTIN, TX 787595784 (Tel: 5123388388)
Registered at PO BOX 26726, AUSTIN, TX 787550726 (Tel: 5124078686)
Recorded as MARK GRIER, MD
Pediatrics (license number reported to NPPES: TX M2962)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Pediatrics Specialists in Austin
- Dr. Suzanne Vanbenthuysen, MD
- Dr. Anne Mahan, MD
- Waleed Abdelhafez
- Dr. Maria Leszczynska, MD
- Dr. William Garner, MD
- Dr. Kirsten Nieto, MD
Mailing Address
1301 S, Capital Of Texas Hwy, Building A Ste.230
Austin, TX 78746
Phone: 5123287666