NPPES file of Aug 9, 2026

Jeffrey R. Ihlendorf, MD

Internal Medicine Physician · Avon, IN

Jeffrey R. Ihlendorf, MD is an internal medicine physician with a practice address in Avon, Indiana, and NPI 1205848728, issued on Aug 13, 2006. Check the license (Indiana 01063183A, as entered in NPPES) on the Medical Licensing Board of Indiana; 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
1205848728
Name
Jeffrey R. Ihlendorf
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
01063183A IN
Self-reported in NPPES; status is on the state search
Practice location
1115 N Ronald Reagan Pkwy, Avon, IN 46123
Phone
(317) 948-3200
Enumerated
Aug 13, 2006
Record last updated
Mar 11, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(317) 217-2424
Medicaid ID
200856940 IN
Medicare enrollment
Enrolled (PECOS I20070710000883); accepts Medicare assignment
Medical or professional school
University Of Cincinnati College Of Medicine, 2003
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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Also registered at 1115 N Ronald Reagan Pkwy

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

  1. Darren Caudill, DOInternal Medicine Physician1255327706
  2. Robert Kemp, MDCritical Care Medicine (Internal Medicine) Physician1639127764
  3. Joseph Lee, MDInternal Medicine Physician1003107517
  4. Sheethu Sadasivan, MDInternal Medicine Physician1891981304
  5. Mark Unroe, MDPulmonary Disease Physician1689832834
  6. John Ward, PA-CPhysician Assistant1770952566

Verify Jeffrey R. Ihlendorf in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Licensing Board of Indiana
    Search for license 01063183A
    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
Open 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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3.3 times the Medicare Part D claims of the average internal medicine physician in 2024

10,575 Medicare Part D claims for 690 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 253 claims were for opioids.

  1. Jeffrey Ihlendorf10,575
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium931 claims
  2. Amlodipine Besylate540 claims
  3. Omeprazole367 claims
  4. Levothyroxine Sodium365 claims
  5. Lisinopril302 claims
  6. Losartan Potassium284 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.

Bills Medicare through 2 group practices

  1. IU Health Medical Group LLCIndianapolis, IN
  2. University Family Physicians, Inc.Avon, IN

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

Jeffrey R. Ihlendorf among 2,109 internal medicine physician records in Indiana

Jeffrey R. Ihlendorf, 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 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 fileYes · 69% of these records are
  • Graduated2003 · median 2005 among the 1,448 with a school on file
  • Record last updated2021 · 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).

32 internal medicine physician records list a practice address in Avon

They are 32 of the 1,084 NPPES records with a practice address in Avon, and 2,109 internal medicine physician records in Indiana.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Michaela Besold, M.D.Avon, IN 461231184619991
  2. Norman Cary, M.D.Avon, IN 461231730138439
  3. Darren Caudill, DOAvon, IN 461231255327706
  4. Angela Debord Henriksen, MDAvon, IN 461231750321576
  5. April Johnson, M.DAvon, IN 461231891716387
  6. Ravi Juluri, M.D.Avon, IN 461231457523151
  7. Melissa Knutson, DOAvon, IN 461231578721783
  8. Chun Ng, MDAvon, IN 461231447249990

Common questions

What is Jeffrey R. Ihlendorf, MD's NPI number?

Jeffrey R. Ihlendorf, MD's National Provider Identifier (NPI) is 1205848728, issued on Aug 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jeffrey R. Ihlendorf, MD located?

The NPPES record lists a practice address at 1115 N Ronald Reagan Pkwy, Avon, IN, 46123. Phone: (317) 948-3200. Providers update this record themselves, so call before visiting.

How can I verify Jeffrey R. Ihlendorf, MD's license?

NPPES lists Indiana license number 01063183A, 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 R. Ihlendorf, MD prescribe under Medicare Part D?

In 2024, Jeffrey R. Ihlendorf, MD had 10,575 Medicare Part D claims for 690 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.