Catherine Hamilton Sinkhorn, MD
Family Medicine Physician · Mishawaka, IN
Catherine Hamilton Sinkhorn, MD is a family medicine physician with a practice address in Mishawaka, Indiana, and NPI 1689104218, issued on Jun 15, 2017. Check the license (Indiana 01083628A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Catherine Hamilton Sinkhorn
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 01083628A IN
11019217A IN
Self-reported in NPPES; status is on the state search - Practice location
- 611 E Douglas RD Ste 407, Mishawaka, IN 46545
- Phone
- (574) 335-6500
- Enumerated
- Jun 15, 2017
- Record last updated
- Apr 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (574) 335-0771
- Medicare enrollment
- Enrolled (PECOS I20200724002417); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,506 in Indiana → Look up another NPI →
Also registered at 611 E Douglas RD Ste 407
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amelle Aldurra, DOStudent in an Organized Health Care Education/Training Program1154124329
- McKenzie Anderson, DOStudent in an Organized Health Care Education/Training Program1457055824
- Maranda Armstead, DOStudent in an Organized Health Care Education/Training Program1205530680
- Thomas Barry, DOStudent in an Organized Health Care Education/Training Program1962252544
- Peter Beck, MDStudent in an Organized Health Care Education/Training Program1063116184
- Nicholas BossoStudent in an Organized Health Care Education/Training Program1578024758
Verify Catherine Hamilton Sinkhorn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01083628ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average family medicine physician in 2024
11,018 Medicare Part D claims for 687 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 330 claims were for opioids.
Most prescribed
- Atorvastatin Calcium613 claims
- Levothyroxine Sodium565 claims
- Amlodipine Besylate497 claims
- Losartan Potassium418 claims
- Omeprazole401 claims
- Lisinopril345 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: $14.03
1 payment: food and beverage; the largest payer was Exact Sciences Corporation. The 55,478 providers of this specialty with any payment received $902.55 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 2 group practices
- Indiana University Health Southern Indiana Physicians LLCBloomington, IN
- IU Health Medical Group LLCIndianapolis, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Hamilton Sinkhorn among 3,506 family medicine physician records in Indiana
Catherine Hamilton Sinkhorn, MD is one of 3,506 family medicine physician records with a practice address in Indiana. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 82% of them.
- NPI issued2017 · 82% of these records are older, 16% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2005 among the 2,196 with a school on file
- Record last updated2020 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 family medicine physician records list a practice address in Mishawaka
They are 48 of the 1,454 NPPES records with a practice address in Mishawaka, and 3,506 family medicine physician records in Indiana.
All 3,506 in Indiana → Every provider in Mishawaka → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Muhammad Arain, MDMishawaka, IN 465451275755100
- Sara Bajuyo, M.D.Mishawaka, IN 465451346273117
- Francis Engel, DOMishawaka, IN 465451295804607
- Kevin Ericson, MDMishawaka, IN 465451265458749
- Charles Higgs-Coulthard, M.D.Mishawaka, IN 465451447205448
- Elizabeth Lindenman, MDMishawaka, IN 465451528058088
- Jennifer Ludwig, MDMishawaka, IN 465451629095203
- Debra McClain, M.D.Mishawaka, IN 465451487657896
Common questions
What is Catherine Hamilton Sinkhorn, MD's NPI number?
Catherine Hamilton Sinkhorn, MD's National Provider Identifier (NPI) is 1689104218, issued on Jun 15, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Hamilton Sinkhorn, MD located?
The NPPES record lists a practice address at 611 E Douglas RD Ste 407, Mishawaka, IN, 46545. Phone: (574) 335-6500. Providers update this record themselves, so call before visiting.
How can I verify Catherine Hamilton Sinkhorn, MD's license?
NPPES lists Indiana license number 01083628A, 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 Catherine Hamilton Sinkhorn, MD prescribe under Medicare Part D?
In 2024, Catherine Hamilton Sinkhorn, MD had 11,018 Medicare Part D claims for 687 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.