Mary Alyson Lerstang, NP
NPI 1851653091 · Internal Medicine Physician · Simpsonville, SC
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Alyson Lerstang, NP is a Internal Medicine Physician provider in Simpsonville, SC (NPI 1851653091).
Provider details
- NPI number
- 1851653091
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- RN155655 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
14 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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Levothyroxine Sodium | 49 |
| Nitrofurantoin Macrocrystalbrand: Nitrofurantoin | 31 |
| Omeprazole | 21 |
| Prednisone | 21 |
| Famotidine | 16 |
| Divalproex Sodium | 15 |
| Fluoxetine Hcl | 13 |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide | 13 |
| Memantine Hcl | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 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
- 2012-06-13
- Last updated
- 2022-07-21
Frequently asked questions
- What is Mary Alyson Lerstang's NPI number?
- Mary Alyson Lerstang's National Provider Identifier (NPI) is 1851653091, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Alyson Lerstang's specialty?
- Mary Alyson Lerstang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Alyson Lerstang located?
- Mary Alyson Lerstang's practice location on file with NPPES is 312 Harrison Bridge Rd, Simpsonville, SC 29680-7133.
- What is Mary Alyson Lerstang's phone number?
- The practice phone number listed in the NPPES registry for Mary Alyson Lerstang is (864) 603-5600.
- Does Mary Alyson Lerstang accept Medicare?
- Mary Alyson Lerstang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Alyson Lerstang's NPI active?
- Yes — Mary Alyson Lerstang's NPI (1851653091) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.