Sigrid Birgitta Tristan, M.D.
Obstetrics & Gynecology Physician · Austin, TX
Sigrid Birgitta Tristan, M.D. is an obstetrics & gynecology physician with a practice address in Austin, Texas, and NPI 1912199563, issued on Aug 16, 2007. Check the license (Texas Q4866, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Sigrid Birgitta Tristan
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- Q4866 TX
036.12075 IL
244783 NY
Self-reported in NPPES; status is on the state search - Practice location
- 601 E 15TH St, Austin, TX 78701
- Phone
- (512) 324-7000
- Enumerated
- Aug 16, 2007
- Record last updated
- Mar 16, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 356696001 TX
- Medicare enrollment
- Enrolled (PECOS I20160229002990); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 3,524 in Texas → Look up another NPI →
Also registered at 601 E 15TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Stephen Bekanich, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1578587770
Verify Sigrid Birgitta Tristan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license Q4866Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 71.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- The University OF Texas AT AustinAustin, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sigrid Birgitta Tristan among 3,524 obstetrics & gynecology physician records in Texas
Sigrid Birgitta Tristan, M.D. is one of 3,524 obstetrics & gynecology physician records with a practice address in Texas. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 44% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2004 · median 2005 among the 2,093 with a school on file
- Record last updated2017 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Texas
There are 3,524 obstetrics & gynecology physician records in Texas.
All 3,524 in Texas → Every provider in Austin → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Alison Brooks-Heinzman, MDAustin, TX 787011043412471
- Zachary Chipman, M.D.Austin, TX 787011083776041
- Ashley Choucroun, M.D.Austin, TX 787011376704544
- Jose Diaz, MDAustin, TX 787011730479593
- John Harkins, M.D.Austin, TX 787011629130513
- Whitney Keller, M.D.Austin, TX 787011093877078
- Isaac Lavie, M.D.Austin, TX 787011487716478
- Melinda Lopez, M.D.Austin, TX 787011356632988
Common questions
What is Sigrid Birgitta Tristan, M.D.'s NPI number?
Sigrid Birgitta Tristan, M.D.'s National Provider Identifier (NPI) is 1912199563, issued on Aug 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sigrid Birgitta Tristan, M.D. located?
The NPPES record lists a practice address at 601 E 15TH St, Austin, TX, 78701. Phone: (512) 324-7000. Providers update this record themselves, so call before visiting.
How can I verify Sigrid Birgitta Tristan, M.D.'s license?
NPPES lists Texas license number Q4866, 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.
What is Sigrid Birgitta Tristan, M.D.'s MIPS final score?
The 2023 MIPS final score is 71.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.