William Phelan, MD
NPI 1275518268 · Family Medicine Physician · Carlisle, PA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Phelan, MD is a Family Medicine Physician provider in Carlisle, PA (NPI 1275518268).
Provider details
- NPI number
- 1275518268
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD042838E (PA)
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
20 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
322 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 198 | $81 |
| Administration of Influenza Virus VaccineG0008 | 47 | $29 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 42 | $117 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 18 | $116 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 17 | $102 |
Typical Medicare-allowed amounts for these services range $29–$117 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 62 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 105 | 28 |
| Lisinopril | 79 | 21 |
| Levothyroxine Sodium | 73 | 17 |
| Simvastatin | 68 | 18 |
| Metformin Hcl | 66 | 18 |
| Omeprazole | 65 | 22 |
| Hydrochlorothiazide | 51 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-13
- Last updated
- 2022-11-02
- Certified
- 2022-11-02
Frequently asked questions
- What is William Phelan's NPI number?
- William Phelan's National Provider Identifier (NPI) is 1275518268, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Phelan's specialty?
- William Phelan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Phelan located?
- William Phelan's practice location on file with NPPES is 419 Village Dr Ste 6, Carlisle, PA 17015-6943.
- What is William Phelan's phone number?
- The practice phone number listed in the NPPES registry for William Phelan is (717) 245-9101.
- Does William Phelan accept Medicare?
- William Phelan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Phelan's NPI active?
- Yes — William Phelan's NPI (1275518268) is active in the NPPES registry as of the last update on 2022-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.