Sixian Cheng Welch, D.O.
Internal Medicine Physician · Marble Falls, TX
Sixian Cheng Welch, D.O. is an internal medicine physician with a practice address in Marble Falls, Texas, and NPI 1811157928, issued on Jun 11, 2008. Check the license (Texas P0516, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Sixian Cheng Welch
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- P0516 TX
BP10031984 TX
Self-reported in NPPES; status is on the state search - Practice location
- 810 W Highway 71, Marble Falls, TX 78654
- Phone
- (830) 201-7100
- Enumerated
- Jun 11, 2008
- Record last updated
- Dec 2, 2024
- Medicare enrollment
- Enrolled (PECOS I20111004000520); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 810 W Highway 71
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sixian Cheng Welch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P0516Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average internal medicine physician in 2024
6,982 Medicare Part D claims for 512 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 149 claims were for opioids.
Most prescribed
- Levothyroxine Sodium393 claims
- Furosemide284 claims
- Donepezil Hcl240 claims
- Amlodipine Besylate215 claims
- Atorvastatin Calcium211 claims
- Gabapentin207 claims
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.
Industry payments in 2024: $201.79
2 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- CH Specialty Services TX PLLCAustin, TX
- Curana Health Medical Group LLCAustin, TX
- Legacy Healthcare Services IncCedar Park, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sixian Cheng Welch among 9,175 internal medicine physician records in Texas
Sixian Cheng Welch, D.O. is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2008 · median 2004 among the 6,088 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 internal medicine physician records list a practice address in Marble Falls
They are 15 of the 354 NPPES records with a practice address in Marble Falls, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Marble Falls → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Gregory Davis, M.D.Marble Falls, TX 786541255362448
- Monica Eisele-Flint, M.D.Marble Falls, TX 786541780888560
- John Hoyer, M.D.Marble Falls, TX 786541225016405
- Ronald Johns, M.D.Marble Falls, TX 786541750376703
- Juliette Madrigal, M.D.Meadowlakes, TX 786541710103668
- Umavathy Manoharan, MDMarble Falls, TX 786541164596532
- Clayton McCuan, DOMarble Falls, TX 786541235321126
- Stuart McKennon, M.D.Marble Falls, TX 786541902834757
Common questions
What is Sixian Cheng Welch, D.O.'s NPI number?
Sixian Cheng Welch, D.O.'s National Provider Identifier (NPI) is 1811157928, issued on Jun 11, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Sixian Cheng Welch, D.O. located?
The NPPES record lists a practice address at 810 W Highway 71, Marble Falls, TX, 78654. Phone: (830) 201-7100. Providers update this record themselves, so call before visiting.
How can I verify Sixian Cheng Welch, D.O.'s license?
NPPES lists Texas license number P0516, 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 Sixian Cheng Welch, D.O. prescribe under Medicare Part D?
In 2024, Sixian Cheng Welch, D.O. had 6,982 Medicare Part D claims for 512 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.