Nathaniel Kwak, MD
Gastroenterology Physician · Salt Lake City, UT
Nathaniel Kwak, MD is a gastroenterology physician with a practice address in Salt Lake City, Utah, and NPI 1245674191, issued on Apr 22, 2013. Check the license (Utah 13181453-1205, as entered in NPPES) on the Utah Medical Licensing Board; the Medicare figures below come from public CMS files.
- Name
- Nathaniel Kwak
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 13181453-1205 UT
S2824 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1187 E 3900 S, Salt Lake City, UT 84124
- Phone
- (801) 263-3041
- Enumerated
- Apr 22, 2013
- Record last updated
- Aug 21, 2023
- Medicare enrollment
- Enrolled (PECOS I20230412002556); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 149 in Utah → Look up another NPI →
Also registered at 1187 E 3900 S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephanie Glenn, NPNurse Practitioner1326745852
- Hannah Mader, PAPhysician Assistant1922745280
- Rebecca VoaklanderGastroenterology Physician1689091977
- Zachary Warner, MDGastroenterology Physician1881157287
Verify Nathaniel Kwak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersUtah Medical Licensing Board
Search for license 13181453-1205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average gastroenterology physician in 2024
102 Medicare Part D claims for 49 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Pantoprazole Sodium35 claims
- Omeprazole25 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): 92.4 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: $344.86
5 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
- Utah Gastroenterology LLCSalt Lake City, UT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathaniel Kwak among 149 gastroenterology physician records in Utah
Nathaniel Kwak, MD is one of 149 gastroenterology physician records with a practice address in Utah. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 74% of them.
- NPI issued2013 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2013 · median 2004 among the 103 with a school on file
- Record last updated2023 · 55% 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 Utah practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Utah
There are 149 gastroenterology physician records in Utah.
All 149 in Utah → Every provider in Salt Lake City → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Dennis Avner, M.D.Salt Lake City, UT 841241346250875
- Holly Clark, M.D.Salt Lake City, UT 841241376639047
- Ronald Joseph, M.D.Salt Lake City, UT 841241033205760
- Chaya Krishnamurthy, MDSalt Lake City, UT 841241679767842
- Christopher Maxwell, M.D.Salt Lake City, UT 841241114107026
- Peder Pedersen, M.D.Salt Lake City, UT 841241568558211
- David Trowbridge, M.D.Salt Lake City, UT 841241134215809
- Rebecca VoaklanderSalt Lake City, UT 841241689091977
Common questions
What is Nathaniel Kwak, MD's NPI number?
Nathaniel Kwak, MD's National Provider Identifier (NPI) is 1245674191, issued on Apr 22, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Nathaniel Kwak, MD located?
The NPPES record lists a practice address at 1187 E 3900 S, Salt Lake City, UT, 84124. Phone: (801) 263-3041. Providers update this record themselves, so call before visiting.
How can I verify Nathaniel Kwak, MD's license?
NPPES lists Utah license number 13181453-1205, as entered by the provider. Search the Utah Medical Licensing Board at https://secure.utah.gov/llv/search/index.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nathaniel Kwak, MD prescribe under Medicare Part D?
In 2024, Nathaniel Kwak, MD had 102 Medicare Part D claims for 49 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Nathaniel Kwak, MD's MIPS final score?
The 2023 MIPS final score is 92.4 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.