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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JACOB MICHAEL HAMAKER DO
NPI 1194420422
Family Medicine in Indianapolis, IN

Active since April 04, 2023PECOS Enrolled
3076 ARMORY DR, INDIANAPOLIS, IN 46208(815) 520-7470 Get Directions Write a Review

NPPES record last updated: September 2, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Sep 2, 2026, Aug 27, 2026, Jun 9, 2023 and 1 more (4 updates tracked since 2023).

About Jacob Michael Hamaker Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JACOB MICHAEL HAMAKER DO (NPI 1194420422) is an individual family medicine provider in Indianapolis, Indiana, licensed in Wisconsin (8214221) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1194420422
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameJACOB MICHAEL HAMAKERCredential: DO
Location Address3076 ARMORY DRIndianapolis, IN 46208-5080
Mailing Address3076 Armory DrIndianapolis, IN 46208-5080 · (815) 520-7470
Phone(815) 520-7470
Sole ProprietorNo
Enumeration DateApril 4, 2023
Last NPPES UpdateSeptember 2, 20264 updates tracked since enumeration
NPPES CertifiedSeptember 2, 2026
✔ NPI 1194420422 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in WI · 8214221✔ Licensed in IL · 336133147
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 11023127A (IN)
3076 ARMORY DR, Indianapolis, IN 46208
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Secondary Practice Locations 2

Location 11905 E Huebbe PkwyBeloit, WI 53511-1842 · Phone (608) 364-5011
Location 25605 E Rockton RdRoscoe, IL 61073-7641 · Phone (815) 525-4500

Other Identifiers 1

Other11023127AIN · License

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jacob Michael Hamaker Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46208 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$82.04 typical visit price
range $53.07 – $161.76
Typical copayment $20.51 (range $13.26 – $40.44)
Most-billed visit code 99203
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Jacob Hamaker's NPI number?

The NPI number for Jacob Hamaker is 1194420422. It was assigned to this individual provider in the NPPES registry on April 4, 2023.

Where is Jacob Hamaker located?

Jacob Hamaker practices at 3076 Armory Dr, Indianapolis, IN 46208. The listed phone number is (815) 520-7470.

What is Jacob Hamaker's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Jacob Hamaker enrolled in Medicare?

Yes. Jacob Hamaker is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Jacob Hamaker was last updated on September 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.