Jacob Hamaker, DO

NPI 1194420422 belongs to Jacob Hamaker, DO, a family medicine physician with a practice location in Indianapolis, IN. The NPI was issued on April 4, 2023, and the record was last updated in NPPES on September 2, 2026. The record lists 4 taxonomy codes. 2 additional practice locations are listed.

Taxonomies and licenses

Practice locations

Local context

Active NPPES records list 1,360 providers with family medicine physician as the primary taxonomy within 25 miles of this practice location's ZIP code, 494 of them within 10 miles.

The same primary taxonomy is listed by 4,689 in Indiana and 210,185 nationwide.

These are counts from NPPES records, not a ranking or recommendation. Distances are measured between ZIP code centers, not street addresses.

Nearby providers with the same primary taxonomy

• Erin Burns, D.O. , Indianapolis, IN, same ZIP code
• Greg Miller, MD , Indianapolis, IN, same ZIP code
• Debra Carter-Miller, MD , Indianapolis, IN, about 2 miles
• Debra Lane, MD , Indianapolis, IN, about 2 miles
• John Heflin, M.D. , Indianapolis, IN, about 3 miles
• Juan Chang, M.D. , Indianapolis, IN, about 3 miles
• Rebecca Shofner , Indianapolis, IN, about 3 miles
• Stephen Harrison, DO , Indianapolis, IN, about 3 miles

Record history

Name on record

Jacob Michael Hamaker

Status

Active

NPI issued

April 4, 2023

Last updated in NPPES

September 2, 2026

Is this your record? Updates are made through NPPES, the official National Plan and Provider Enumeration System.

NPPES data as of September 13, 2026 · Source: CMS NPPES

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.npilayer.com/v1/providers/1194420422"