Quick answers
- Does Adam S. Greenfield accept Medicare assignment?
- Yes. Medicare's clinician data says Adam S. Greenfield 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 Adam S. Greenfield see?
- In 2024, CMS data shows 153 Original Medicare patients and 1,020 services for Adam S. Greenfield. This counts Original Medicare only and measures volume, not quality.
- What is Adam S. Greenfield's NPI number?
- 1225126519. 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 Adam S. Greenfield, 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 | 153 |
|---|---|
| Services billed to Medicare | 1,020 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)469 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)241 services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)103 services
- Insertion of needle into vein for collection of blood sample (36415)81 services
- Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)76 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 blood pressure75%
- High cholesterol75%
- Arthritis75%
- Ischemic heart disease34%
- Diabetes31%
- Anxiety27%
Practice locations
Addresses where Adam S. Greenfield is enrolled with Medicare (CMS data updated October 2, 2026).
- 10806 US Hwy 19, Suite 102aPort Richey, FL 34668 (727) 861‑7043
Group practices
Medicare enrollment lists Adam S. Greenfield as a member of this group (CMS data updated October 2, 2026).
- Asg Doctors Inc2 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Port Richey
Clinicians with the same Medicare primary specialty in Port Richey, FL — not a recommendation.
Other clinicians in Asg Doctors Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225126519 |
| 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