Mark Lasorda, DO
NPI 1871913954 · Internal Medicine Physician · West Chester, PA
Mark Lasorda, DO is a Internal Medicine Physician provider in West Chester, PA (NPI 1871913954).
Provider details
- NPI number
- 1871913954
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- OS019447 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
12 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Levothyroxine Sodium | 27 |
| Rosuvastatin Calcium | 24 |
| Losartan Potassium | 22 |
| Atorvastatin Calcium | 16 |
| Clonazepam | 16 |
| Amlodipine Besylate | 13 |
| Valacyclovir Hclbrand: Valacyclovir | 13 |
| Simvastatin | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$27 across 1 record (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
Registry dates
- Enumerated
- 2014-04-16
- Last updated
- 2018-08-27
Frequently asked questions
- What is Mark Lasorda's NPI number?
- Mark Lasorda's National Provider Identifier (NPI) is 1871913954, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Lasorda's specialty?
- Mark Lasorda is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Lasorda located?
- Mark Lasorda's practice location on file with NPPES is 210 Willowbrook Ln, West Chester, PA 19382.
- What is Mark Lasorda's phone number?
- The practice phone number listed in the NPPES registry for Mark Lasorda is (610) 696-8900.
- Is Mark Lasorda's NPI active?
- Yes — Mark Lasorda's NPI (1871913954) is active in the NPPES registry as of the last update on 2018-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.