Shannon Dieffenderfer
NPI 1861048530 · Physician Assistant · Anchorage, AK
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shannon Dieffenderfer is a Physician Assistant provider in Anchorage, AK (NPI 1861048530).
Provider details
- NPI number
- 1861048530
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 10117 (GA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
260 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 181 | $73 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 63 | $107 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 16 | $48 |
Typical Medicare-allowed amounts for these services range $48–$107 (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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 48 | 38 |
| Oxycodone Hcl | 47 | 36 |
| Cyclobenzaprine Hcl | 36 | 30 |
| Meloxicam | 20 | 17 |
| Alendronate Sodium | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$907 across 8 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
Additional practice locations (1)
- 187 Glenn HwyGlennallen, AK 99588-0005Phone: (907) 822-5686
Registry dates
- Enumerated
- 2019-08-17
- Last updated
- 2022-06-06
- Certified
- 2022-06-06
Frequently asked questions
- What is Shannon Dieffenderfer's NPI number?
- Shannon Dieffenderfer's National Provider Identifier (NPI) is 1861048530, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shannon Dieffenderfer's specialty?
- Shannon Dieffenderfer is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Shannon Dieffenderfer located?
- Shannon Dieffenderfer's practice location on file with NPPES is 4100 Lake Otis Pkwy Ste 108, Anchorage, AK 99508-5230.
- What is Shannon Dieffenderfer's phone number?
- The practice phone number listed in the NPPES registry for Shannon Dieffenderfer is (907) 563-3145.
- Does Shannon Dieffenderfer accept Medicare?
- Shannon Dieffenderfer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shannon Dieffenderfer's NPI active?
- Yes — Shannon Dieffenderfer's NPI (1861048530) is active in the NPPES registry as of the last update on 2022-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.