Quick answers
- Does Gregory S. Hertzberg Sr. accept Medicare assignment?
- Medicare's clinician data says Gregory S. Hertzberg Sr. may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Gregory S. Hertzberg Sr. see?
- In 2024, CMS data shows 11 Original Medicare patients and 300 services for Gregory S. Hertzberg Sr.. This counts Original Medicare only and measures volume, not quality.
- What is Gregory S. Hertzberg Sr.'s NPI number?
- 1588786248. 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 Gregory S. Hertzberg Sr., 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 | 11 |
|---|---|
| Services billed to Medicare | 300 |
| Different services or procedures | 1 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Chiropractic manipulative treatment, 3-4 spinal regions (98941)300 services
Practice locations
Addresses where Gregory S. Hertzberg Sr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 1941 W Guadalupe Rd, 117 Chirocare PlusMesa, AZ 85202 (480) 899‑0882
Specialties
- Chiropracticprimary
Other chiropractors in Mesa
Clinicians with the same Medicare primary specialty in Mesa, AZ — not a recommendation.
Clinician information
| Credential | DC |
|---|---|
| Chiropractic college | Life Chiropractic College |
| Graduation year | 1989 (37 years since chiropractic college) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1588786248 |
| 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