Sienna Klopp, PA-C
NPI 1124770284 · Physician Assistant · Flagstaff, AZ
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sienna Klopp, PA-C is a Physician Assistant provider in Flagstaff, AZ (NPI 1124770284).
Provider details
- NPI number
- 1124770284
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 8939 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
4 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
329 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) |
|---|---|---|
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 84 | $55 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 82 | $73 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 42 | $103 |
| X-Ray of Shoulder, Minimum of 2 Views73030 | 35 | $28 |
| Shaving of Part of Shoulder Bone and Repair of Ligament Using an Endoscope29826 | 33 | $20 |
| Repair of Shoulder Rotator Cuff Using an Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 74 | 69 |
| Oxycodone Hcl | 70 | 54 |
| Cyclobenzaprine Hcl | 41 | 24 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 36 | 22 |
| Cefadroxil | 19 | 19 |
| Meloxicam | 19 | 11 |
| Diclofenac Sodium | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$73 across 2 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
- 2022-01-20
- Last updated
- 2022-02-15
- Certified
- 2022-02-08
Frequently asked questions
- What is Sienna Klopp's NPI number?
- Sienna Klopp's National Provider Identifier (NPI) is 1124770284, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sienna Klopp's specialty?
- Sienna Klopp is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sienna Klopp located?
- Sienna Klopp's practice location on file with NPPES is 1485 N Turquoise Dr Ste 200, Flagstaff, AZ 86001-2000.
- What is Sienna Klopp's phone number?
- The practice phone number listed in the NPPES registry for Sienna Klopp is (866) 974-2673.
- Does Sienna Klopp accept Medicare?
- Sienna Klopp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sienna Klopp's NPI active?
- Yes — Sienna Klopp's NPI (1124770284) is active in the NPPES registry as of the last update on 2022-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.