NPPES file of Aug 9, 2026

Michelle Terwilliger, NP

Family Nurse Practitioner · Dyer, IN

Michelle Terwilliger, NP is a family nurse practitioner with a practice address in Dyer, Indiana, and NPI 1912360546, issued on Mar 31, 2016. Check the license (Indiana 28141768A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1912360546
Name
Michelle Terwilliger
Credential
NP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License numbers
28141768A IN
29522 SC
Self-reported in NPPES; status is on the state search
Practice location
1100 Joliet St, Dyer, IN 46311
Phone
(219) 836-2096
Enumerated
Mar 31, 2016
Record last updated
Apr 17, 2025
Fax
(219) 836-2097
Medicare enrollment
Enrolled (PECOS I20250501001498); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family nurse practitioner records → All 5,867 in Indiana → Look up another NPI →

Also registered at 1100 Joliet St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Daniel Benjamin, PTPhysical Therapist1699715615
  2. Mark Chang, M.D.Orthopaedic Surgery Physician1871607507
  3. Douglas Hoeksema, PTPhysical Therapist1871561977
  4. Sarah Martinez, DPTPhysical Therapist1477801116
  5. Tara Pai, MSPTPhysical Therapist1528014859
  6. Roland SaucierPhysical Therapist1366894495

Verify Michelle Terwilliger in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Indiana board licenses this profession
    Search for license 28141768A    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Indiana license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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3.1 times the Medicare Part D claims of the average family nurse practitioner in 2024

4,041 Medicare Part D claims for 587 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 100 claims were for opioids.

  1. Michelle Terwilliger4,041
  2. Specialty average1,305

Most prescribed

  1. Gabapentin268 claims
  2. Levetiracetam168 claims
  3. Lamotrigine152 claims
  4. Donepezil Hcl140 claims
  5. Pregabalin136 claims
  6. Duloxetine Hcl133 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: $3,611.13

201 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michelle Terwilliger$3,611.13
  2. Specialty average$650.95

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

  1. Bon Secours Medical Group Greenville Specialty Care LLCGreenville, SC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Michelle Terwilliger among 5,867 family nurse practitioner records in Indiana

Michelle Terwilliger, NP is one of 5,867 family nurse practitioner records with a practice address in Indiana. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 33% of them.

  • NPI issued2016 · 33% of these records are older, 61% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 67% of these records are
  • Graduated2015 · median 2018 among the 3,953 with a school on file
  • Record last updated2025 · 33% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

35 family nurse practitioner records list a practice address in Dyer

They are 35 of the 457 NPPES records with a practice address in Dyer, and 5,867 family nurse practitioner records in Indiana.

All 5,867 in Indiana → Every provider in Dyer → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Saundra Clark, NP-CDyer, IN 463111972839934
  2. Melissa KrzusDyer, IN 463111205243524
  3. Maria Marrero, NPDyer, IN 463111396122784
  4. Michelle Masterson, NP-CDyer, IN 463111871039875
  5. Erika MullensDyer, IN 463111992270102
  6. Jelena Ozegovic, FNPDyer, IN 463111346743077
  7. Lisa Pazdur, NURSE PRACTITIONERDyer, IN 463111144269168
  8. Michael Polich, N.P.Dyer, IN 463111871675637

Common questions

What is Michelle Terwilliger, NP's NPI number?

Michelle Terwilliger, NP's National Provider Identifier (NPI) is 1912360546, issued on Mar 31, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Michelle Terwilliger, NP located?

The NPPES record lists a practice address at 1100 Joliet St, Dyer, IN, 46311. Phone: (219) 836-2096. Providers update this record themselves, so call before visiting.

How can I verify Michelle Terwilliger, NP's license?

NPPES lists Indiana license number 28141768A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity only.

How much does Michelle Terwilliger, NP prescribe under Medicare Part D?

In 2024, Michelle Terwilliger, NP had 4,041 Medicare Part D claims for 587 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.