Mary Louise Thomas, ACNP-BC
NPI 1538323886 · Family Nurse Practitioner · Langhorne, PA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Louise Thomas, ACNP-BC is a Family Nurse Practitioner provider in Langhorne, PA (NPI 1538323886).
Provider details
- NPI number
- 1538323886
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ACNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- UP006155B (PA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
71 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 | 37 | $111 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 34 | $13 |
Typical Medicare-allowed amounts for these services range $13–$111 (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 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 269 | 129 |
| Metoprolol Succinate | 232 | 106 |
| Amlodipine Besylate | 158 | 85 |
| Rosuvastatin Calcium | 116 | 63 |
| Losartan Potassium | 113 | 58 |
| Apixabanbrand: Eliquis | 108 | 39 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$770 across 31 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
Registry dates
- Enumerated
- 2008-07-16
- Last updated
- 2021-05-14
- Certified
- 2021-05-14
Frequently asked questions
- What is Mary Louise Thomas's NPI number?
- Mary Louise Thomas's National Provider Identifier (NPI) is 1538323886, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Louise Thomas's specialty?
- Mary Louise Thomas is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Louise Thomas located?
- Mary Louise Thomas's practice location on file with NPPES is 1203 Langhorne Newtown Rd, Langhorne, PA 19047.
- What is Mary Louise Thomas's phone number?
- The practice phone number listed in the NPPES registry for Mary Louise Thomas is (215) 750-7818.
- Does Mary Louise Thomas accept Medicare?
- Mary Louise Thomas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Louise Thomas's NPI active?
- Yes — Mary Louise Thomas's NPI (1538323886) is active in the NPPES registry as of the last update on 2021-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.