Quick answers
- Does John T. Holland accept Medicare assignment?
- Yes. Medicare's clinician data says John T. Holland 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. Holland see?
- In 2024, CMS data shows 38 Original Medicare patients and 649 services for John T. Holland. This counts Original Medicare only and measures volume, not quality.
- What is John T. Holland's NPI number?
- 1881019198. 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. Holland, 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 patients | 38 |
|---|---|
| Services billed to Medicare | 649 |
| Different services or procedures | 2 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Chiropractic manipulative treatment, 1-2 spinal regions (98940)580 services
- Chiropractic manipulative treatment, 3-4 spinal regions (98941)69 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 cholesterol75%
- Arthritis71%
- High blood pressure66%
- Depression29%
- Osteoporosis29%
Practice locations
Addresses where John T. Holland is enrolled with Medicare (CMS data updated October 2, 2026).
- 355 S Harbor BlvdLa Habra, CA 90631 (562) 694‑8347
Group practices
Medicare enrollment lists John T. Holland as a member of this group (CMS data updated October 2, 2026).
- Holland Chiropractic Inc.3 clinicians in the group
Specialties
- Chiropracticprimary
Other chiropractors in La Habra
Clinicians with the same Medicare primary specialty in La Habra, CA — not a recommendation.
Other clinicians in Holland Chiropractic Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CH |
|---|---|
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881019198 |
| Corrections | Report 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians