William Alexander, MD, PHD
NPI 1114585379 · Hospice and Palliative Medicine (Internal Medicine) Physician · Buffalo, NY
Enrolled with Medicare as Practitioner - Hospice/Palliative Care · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Alexander, MD, PHD is a Hospice and Palliative Medicine (Internal Medicine) Physician provider in Buffalo, NY (NPI 1114585379).
Provider details
- NPI number
- 1114585379
- Entity type
- Individual
- Primary specialty
- Hospice and Palliative Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 320519 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
56 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 27 | $136 |
| Advance Care Planning, First 30 Minutes99497 | 15 | $71 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 14 | $171 |
Typical Medicare-allowed amounts for these services range $71–$171 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 120 | 41 |
| Duloxetine Hcl | 105 | 29 |
| Gabapentin | 94 | 25 |
| Methadone Hcl | 83 | 28 |
| Buprenorphine | 66 | 28 |
| Hydromorphone Hcl | 63 | 30 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-06-03
- Last updated
- 2023-08-07
- Certified
- 2023-05-23
Frequently asked questions
- What is William Alexander's NPI number?
- William Alexander's National Provider Identifier (NPI) is 1114585379, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Alexander's specialty?
- William Alexander is listed in the NPPES registry with a primary specialty of Hospice and Palliative Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is William Alexander located?
- William Alexander's practice location on file with NPPES is Elm and Carlton St, Buffalo, NY 14263-0001.
- What is William Alexander's phone number?
- The practice phone number listed in the NPPES registry for William Alexander is (716) 845-2300.
- Does William Alexander accept Medicare?
- William Alexander is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Alexander's NPI active?
- Yes — William Alexander's NPI (1114585379) is active in the NPPES registry as of the last update on 2023-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.