Mary Shierly, PA
NPI 1831401983 · Physician Assistant · Castleton on Hudson, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Shierly, PA is a Physician Assistant provider in Castleton on Hudson, NY (NPI 1831401983).
Provider details
- NPI number
- 1831401983
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- PA4011 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
15 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
187 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 | 34 | $101 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 31 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 28 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $73 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 19 | $13 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 72 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 206 | 115 |
| Omeprazole | 152 | 72 |
| Levothyroxine Sodium | 126 | 78 |
| Amlodipine Besylate | 105 | 61 |
| Lisinopril | 104 | 59 |
| Losartan Potassium | 97 | 54 |
| Simvastatin | 93 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$98 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
- 2010-07-06
- Last updated
- 2026-03-13
- Certified
- 2026-03-13
Frequently asked questions
- What is Mary Shierly's NPI number?
- Mary Shierly's National Provider Identifier (NPI) is 1831401983, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Shierly's specialty?
- Mary Shierly is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Shierly located?
- Mary Shierly's practice location on file with NPPES is 35 Empire State Blvd, Castleton on Hudson, NY 12033-9777.
- What is Mary Shierly's phone number?
- The practice phone number listed in the NPPES registry for Mary Shierly is (518) 477-2167.
- Does Mary Shierly accept Medicare?
- Mary Shierly is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Shierly's NPI active?
- Yes — Mary Shierly's NPI (1831401983) is active in the NPPES registry as of the last update on 2026-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.