Katherine Sirianni, PA-C
NPI 1316254428 · Physician Assistant · Germantown, MD
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Sirianni, PA-C is a Physician Assistant provider in Germantown, MD (NPI 1316254428).
Provider details
- NPI number
- 1316254428
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- C0004319 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
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
15 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 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 151 | 66 |
| Amlodipine Besylate | 117 | 47 |
| Levothyroxine Sodium | 106 | 50 |
| Rosuvastatin Calcium | 106 | 52 |
| Losartan Potassium | 72 | 30 |
| Pantoprazole Sodium | 53 | 23 |
| Atenolol |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$838 across 39 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
- 2010-09-10
- Last updated
- 2025-12-15
- Certified
- 2025-12-15
Frequently asked questions
- What is Katherine Sirianni's NPI number?
- Katherine Sirianni's National Provider Identifier (NPI) is 1316254428, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Sirianni's specialty?
- Katherine Sirianni is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Sirianni located?
- Katherine Sirianni's practice location on file with NPPES is 19851 Observation Dr Ste 250, Germantown, MD 20876-4151.
- What is Katherine Sirianni's phone number?
- The practice phone number listed in the NPPES registry for Katherine Sirianni is (301) 972-0400.
- Does Katherine Sirianni accept Medicare?
- Katherine Sirianni is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Sirianni's NPI active?
- Yes — Katherine Sirianni's NPI (1316254428) is active in the NPPES registry as of the last update on 2025-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.