Kristy M. Marsillo, DO
Emergency Medicine Physician · Austin, TX
Kristy M. Marsillo, DO is an emergency medicine physician with a practice address in Austin, Texas, and NPI 1508083346, issued on Apr 20, 2007. Check the license (Texas N3868, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Kristy M. Marsillo
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- N3868 TX
58002101 OH
Self-reported in NPPES; status is on the state search - Practice location
- LA Costa Centre 6300 LA Calma Drive, Austin, TX 78752
- Phone
- (512) 452-8533
- Enumerated
- Apr 20, 2007
- Record last updated
- Sep 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Verify Kristy M. Marsillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N3868Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average emergency medicine physician in 2024
45 Medicare Part D claims for 24 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Emergency Medicine Physician providers in Texas
There are 4,885 emergency medicine physician records in Texas.
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Common questions
What is Kristy M. Marsillo, DO's NPI number?
Kristy M. Marsillo, DO's National Provider Identifier (NPI) is 1508083346, issued on Apr 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Kristy M. Marsillo, DO located?
The NPPES record lists a practice address at LA Costa Centre 6300 LA Calma Drive, Austin, TX, 78752. Phone: (512) 452-8533. Providers update this record themselves, so call before visiting.
How can I verify Kristy M. Marsillo, DO's license?
NPPES lists Texas license number N3868, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kristy M. Marsillo, DO prescribe under Medicare Part D?
In 2024, Kristy M. Marsillo, DO had 45 Medicare Part D claims for 24 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.