Jeffrey Patrick Gatz, MD
Internal Medicine Physician · Valparaiso, IN
Jeffrey Patrick Gatz, MD is an internal medicine physician with a practice address in Valparaiso, Indiana, and NPI 1609868207, issued on Aug 19, 2005. Check the license (Indiana 01049226A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Jeffrey Patrick Gatz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 01049226A IN
Self-reported in NPPES; status is on the state search - Practice location
- 2421 Laporte Ave, Valparaiso, IN 46383
- Phone
- (219) 462-6192
- Enumerated
- Aug 19, 2005
- Record last updated
- Aug 8, 2023
- Fax
- (219) 464-2585
- Medicaid ID
- 200233200 IN
- Medicare enrollment
- Enrolled (PECOS I20050608001210); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 1997
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Also registered at 2421 Laporte Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Serena Allison, NPFamily Nurse Practitioner1639919137
- Janet Bilder, DOFamily Medicine Physician1326451030
- Joe Clinkenbeard, PAPhysician Assistant1306843685
- Tamara Kay, DNP, FNP-BCFamily Nurse Practitioner1902254733
- Benjamin Koch, FNP-BCFamily Nurse Practitioner1790141273
- Eugene Lin, MDInternal Medicine Physician1972595726
Verify Jeffrey Patrick Gatz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01049226ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% more Medicare Part D claims than the average internal medicine physician in 2024
4,851 Medicare Part D claims for 310 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 104 claims were for opioids.
Most prescribed
- Atorvastatin Calcium387 claims
- Amlodipine Besylate297 claims
- Levothyroxine Sodium228 claims
- Losartan Potassium202 claims
- Metformin Hcl159 claims
- Hydrochlorothiazide152 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: $23.34
1 payment: education; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. 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 one group practice
- Franciscan Physician NetworkValparaiso, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeffrey Patrick Gatz among 2,109 internal medicine physician records in Indiana
Jeffrey Patrick Gatz, MD is one of 2,109 internal medicine physician records with a practice address in Indiana. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1997 · median 2005 among the 1,448 with a school on file
- Record last updated2023 · 43% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 internal medicine physician records list a practice address in Valparaiso
They are 27 of the 1,525 NPPES records with a practice address in Valparaiso, and 2,109 internal medicine physician records in Indiana.
All 2,109 in Indiana → Every provider in Valparaiso → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Buynak, M.D.Valparaiso, IN 463831508977984
- Vijaya Chapala, MDValparaiso, IN 463831174573281
- Thomas Devine, MDValparaiso, IN 463831942204508
- Abdus Lakhani, MDValparaiso, IN 463831831187244
- Eugene Lin, MDValparaiso, IN 463831972595726
- Ruolan Pi, MDValparaiso, IN 463831538152103
- Rajat Prakash, MDValparaiso, IN 463831700872041
- Sangeeta Sehgal, MDValparaiso, IN 463831992766224
Common questions
What is Jeffrey Patrick Gatz, MD's NPI number?
Jeffrey Patrick Gatz, MD's National Provider Identifier (NPI) is 1609868207, issued on Aug 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey Patrick Gatz, MD located?
The NPPES record lists a practice address at 2421 Laporte Ave, Valparaiso, IN, 46383. Phone: (219) 462-6192. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey Patrick Gatz, MD's license?
NPPES lists Indiana license number 01049226A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jeffrey Patrick Gatz, MD prescribe under Medicare Part D?
In 2024, Jeffrey Patrick Gatz, MD had 4,851 Medicare Part D claims for 310 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.