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Obstetrics/Gynecology

John T. Harlan, MD

Works at hospitals in Oxford, OH · Ohio

Summary

Dr. John T. Harlan, MD is an OB-GYN at 10058 Cooley Rd, Brookville, IN 47012. Phone: (765) 647-0808. Accepts Medicare assignment. In 2024, John T. Harlan had 44 Original Medicare patients and 81 services. NPI 1427001866. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: OB-GYN (Medicare lists Obstetrics/Gynecology)
  • Address: 10058 Cooley Rd, Brookville, IN 47012 · Directions (5 more locations)
  • Phone: (765) 647‑0808
  • Medicare: Accepts Medicare assignment
  • Hospital: McCullough-Hyde Memorial Hospital
  • Group practice: TriHealth H LLC (+2 more)
  • Medical school: Ohio State University College Of Medicine · graduated 1987 (39 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about John T. Harlan, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does John T. Harlan accept Medicare assignment?
Yes. Medicare's clinician data says John T. Harlan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does John T. Harlan see?
In 2024, CMS data shows 44 Original Medicare patients and 81 services for John T. Harlan. This counts Original Medicare only and measures volume, not quality.
What is John T. Harlan's NPI number?
1427001866. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for John T. Harlan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients44
Services billed to Medicare81
Different services or procedures16
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)24 services
  2. Urinalysis, manual test (81002)17 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol66%
  • High blood pressure59%
  • Arthritis34%
  • Osteoporosis32%
  • Anxiety27%

Hospitals where John T. Harlan works

Medicare's Facility Affiliation Data lists John T. Harlan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where John T. Harlan is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists John T. Harlan as a member of these groups (CMS data updated October 2, 2026).

  • TriHealth H LLC850 clinicians in the group
  • Butler County Community Health Consortium Inc53 clinicians in the group
  • TriHealth Physicians of Indiana Inc9 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Indiana →

Other OB-GYNs in Indiana

Clinicians with the same Medicare primary specialty in Indiana — not a recommendation.

All OB-GYNs in Indiana →

Other clinicians in TriHealth H LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolOhio State University College Of Medicine
Graduation year1987 (39 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1427001866
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians