Jan Carlos Prazak, MD
Gastroenterology Physician · San Antonio, TX
Jan Carlos Prazak, MD is a gastroenterology physician with a practice address in San Antonio, Texas, and NPI 1649488222, issued on May 18, 2007. Check the license on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Jan Carlos Prazak
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 4301079500 MI
Self-reported in NPPES; status is on the state search - Practice location
- 621 Camden Street, San Antonio, TX 78215
- Phone
- (210) 253-3422
- Enumerated
- May 18, 2007
- Record last updated
- Nov 14, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (210) 227-9833
- Medicare enrollment
- Enrolled (PECOS I20120813000697); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 621 Camden Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hector Allende, M.D.Gastroenterology Physician1235237595
- Ravi Botla, M.D.Gastroenterology Physician1366540544
- Komaranahalli Ganeshappa, M.D.Gastroenterology Physician1275631525
- Ravi Ganeshappa, M.D.Gastroenterology Physician1457459695
Verify Jan Carlos Prazak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% more Medicare Part D claims than the average gastroenterology physician in 2024
1,575 Medicare Part D claims for 645 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Omeprazole257 claims
- Pantoprazole Sodium150 claims
- Linzess134 claims
- Peg-3350 And Electrolytes124 claims
- Clenpiq119 claims
- Famotidine89 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.9 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).
Industry payments in 2024: $767.97
36 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 13,350 providers of this specialty with any payment received $5,015.95 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 one group practice
- Texas Digestive Disease Consultants, PLLCPlano, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jan Carlos Prazak among 1,478 gastroenterology physician records in Texas
Jan Carlos Prazak, MD is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% 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 49% of them.
- NPI issued2007 · 49% of these records are older, 41% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2001 · median 2003 among the 1,175 with a school on file
- Record last updated2013 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Texas
There are 1,478 gastroenterology physician records in Texas.
All 1,478 in Texas → Every provider in San Antonio → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Hector Allende, M.D.San Antonio, TX 782151235237595
- Ravi Botla, M.D.San Antonio, TX 782151366540544
- Kevin Dasher, MDSan Antonio, TX 782151386602712
- Komaranahalli Ganeshappa, M.D.San Antonio, TX 782151275631525
- Ravi Ganeshappa, M.D.San Antonio, TX 782151457459695
- Amit GoyalSan Antonio, TX 782151225003676
- Bijo John, MDSan Antonio, TX 782151922260017
- Eric Lawitz, M.D.San Antonio, TX 782151578661716
Common questions
What is Jan Carlos Prazak, MD's NPI number?
Jan Carlos Prazak, MD's National Provider Identifier (NPI) is 1649488222, issued on May 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jan Carlos Prazak, MD located?
The NPPES record lists a practice address at 621 Camden Street, San Antonio, TX, 78215. Phone: (210) 253-3422. Providers update this record themselves, so call before visiting.
How can I verify Jan Carlos Prazak, MD's license?
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 Jan Carlos Prazak, MD prescribe under Medicare Part D?
In 2024, Jan Carlos Prazak, MD had 1,575 Medicare Part D claims for 645 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Jan Carlos Prazak, MD's MIPS final score?
The 2023 MIPS final score is 79.9 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.