Quick answers
- Does Haldane W. Porteous accept Medicare assignment?
- Yes. Medicare's clinician data says Haldane W. Porteous 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 Haldane W. Porteous see?
- In 2024, CMS data shows 701 Original Medicare patients and 3,307 services for Haldane W. Porteous. This counts Original Medicare only and measures volume, not quality.
- What is Haldane W. Porteous's NPI number?
- 1134358716. 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 Haldane W. Porteous, 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 | 701 |
|---|---|
| Services billed to Medicare | 3,307 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)866 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)832 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)485 services
- Dialysis services, 4 or more physician visits per month (20 years or older) (90960)233 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)171 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%
- Chronic kidney disease75%
- Diabetes60%
- Arthritis48%
- Ischemic heart disease48%
Hospitals where Haldane W. Porteous works
Medicare's Facility Affiliation Data lists Haldane W. Porteous at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- AdventHealth Heart of FloridaDavenport, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100137
- St Josephs HospitalTampa, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100075
- Winter Haven HospitalWinter Haven, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100052
Practice locations
Addresses where Haldane W. Porteous is enrolled with Medicare (CMS data updated October 2, 2026).
- 200 Ave F NEWinter Haven, FL 33881
- 2461 Enterprise Rd, Suite CClearwater, FL 33763 (727) 725‑5060
- 601 1st St NWinter Haven, FL 33881 (863) 298‑3204
- 635 1st St N, Nephrology at Gessler AnnexWinter Haven, FL 33881 (863) 294‑0670
Group practices
Medicare enrollment lists Haldane W. Porteous as a member of this group (CMS data updated October 2, 2026).
- BayCare Medical Group, Inc.1,547 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Winter Haven
Clinicians with the same Medicare primary specialty in Winter Haven, FL — not a recommendation.
Other clinicians in BayCare Medical Group, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134358716 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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