William Heppenstall
NPI 1023558400 · Internal Medicine Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Heppenstall is a Internal Medicine Physician provider in Philadelphia, PA (NPI 1023558400).
Provider details
- NPI number
- 1023558400
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
496 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 397 | $137 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 61 | $141 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 22 | $97 |
| Administration of Influenza Virus VaccineG0008 | 16 | $33 |
Typical Medicare-allowed amounts for these services range $33–$141 (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 · 229 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,396 | 364 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 793 | 153 |
| Amlodipine Besylate | 700 | 186 |
| Gabapentin | 687 | 142 |
| Losartan Potassium | 641 | 152 |
| Fluticasone Propionate | 578 | 155 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,715 across 187 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 4190 City AvePhiladelphia, PA 19131-1626Phone: (215) 871-6690
Registry dates
- Enumerated
- 2017-03-03
- Last updated
- 2021-07-16
- Certified
- 2021-07-16
Frequently asked questions
- What is William Heppenstall's NPI number?
- William Heppenstall's National Provider Identifier (NPI) is 1023558400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Heppenstall's specialty?
- William Heppenstall is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Heppenstall located?
- William Heppenstall's practice location on file with NPPES is 101 E Olney Ave Ste C5, Philadelphia, PA 19120-2470.
- What is William Heppenstall's phone number?
- The practice phone number listed in the NPPES registry for William Heppenstall is (215) 927-1937.
- Does William Heppenstall accept Medicare?
- William Heppenstall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Heppenstall's NPI active?
- Yes — William Heppenstall's NPI (1023558400) is active in the NPPES registry as of the last update on 2021-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.