Robert J. Buynak, M.D.
Internal Medicine Physician · Valparaiso, IN
Robert J. Buynak, M.D. is an internal medicine physician with a practice address in Valparaiso, Indiana, and NPI 1508977984, issued on Aug 31, 2006. Check the license (Indiana 01048425A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Robert J. Buynak
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 01048425A IN
Self-reported in NPPES; status is on the state search - Practice location
- 454 College Ave, Valparaiso, IN 46383
- Phone
- (219) 462-7173
- Enumerated
- Aug 31, 2006
- Record last updated
- Mar 17, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (219) 462-7504
- Medicaid ID
- 200213770A IN
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Verify Robert J. Buynak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01048425ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
32 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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: $2,804.68
27 payments; by number, the most common kind was food and beverage; the largest payer was ModernaTX, 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.
Robert J. Buynak among 2,109 internal medicine physician records in Indiana
Robert J. Buynak, M.D. 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 54% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2011 · 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
- Vijaya Chapala, MDValparaiso, IN 463831174573281
- Thomas Devine, MDValparaiso, IN 463831942204508
- Jeffrey Gatz, MDValparaiso, IN 463831609868207
- 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 Robert J. Buynak, M.D.'s NPI number?
Robert J. Buynak, M.D.'s National Provider Identifier (NPI) is 1508977984, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert J. Buynak, M.D. located?
The NPPES record lists a practice address at 454 College Ave, Valparaiso, IN, 46383. Phone: (219) 462-7173. Providers update this record themselves, so call before visiting.
How can I verify Robert J. Buynak, M.D.'s license?
NPPES lists Indiana license number 01048425A, 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 Robert J. Buynak, M.D. prescribe under Medicare Part D?
In 2024, Robert J. Buynak, M.D. had 32 Medicare Part D claims; 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.