Quick answers
- Does William T. Palfrey Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says William T. Palfrey Jr. 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 William T. Palfrey Jr. see?
- In 2024, CMS data shows 1,096 Original Medicare patients and 3,659 services for William T. Palfrey Jr.. This counts Original Medicare only and measures volume, not quality.
- What is William T. Palfrey Jr.'s NPI number?
- 1558705194. 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 William T. Palfrey Jr., 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 | 1,096 |
|---|---|
| Services billed to Medicare | 3,659 |
| Different services or procedures | 46 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent 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)672 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)500 services
- Test to measure expiratory airflow and volume changes before and after medication administration (94060)396 services
- Test to examine how well the lungs exchange gases (94729)394 services
- Test to determine lung volumes using sensors (94726)339 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%
- Ischemic heart disease59%
- Arthritis58%
- COPD54%
- Chronic kidney disease38%
Hospitals where William T. Palfrey Jr. works
Medicare's Facility Affiliation Data lists William T. Palfrey Jr. 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.
- Ascension St Vincent's RiversideJacksonville, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100040
- Baptist Health Medical Center - JacksonvilleJacksonville, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100088
- Baptist Medical Center - NassauFernandina Beach, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100140
- Baptist Medical Center BeachesJacksonville Beach, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100117
Practice locations
Addresses where William T. Palfrey Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 1325 San Marco BlvdJacksonville, FL 32207 (904) 253‑6910
Group practices
Medicare enrollment lists William T. Palfrey Jr. as a member of this group (CMS data updated October 2, 2026).
- Respiratory Critical Care and Sleep Medicine Associates, Inc41 clinicians in the group
Specialties
- Sleep Medicineprimary
- Pulmonary Diseasealso
Other sleep medicine doctors in Jacksonville
Clinicians with the same Medicare primary specialty in Jacksonville, FL — not a recommendation.
Other clinicians in Respiratory Critical Care and Sleep Medicine Associates, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558705194 |
| 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