Ryan Dirienzo, PA-C
NPI 1205464344 · Physician Assistant · Ithaca, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Dirienzo, PA-C is a Physician Assistant provider in Ithaca, NY (NPI 1205464344).
Provider details
- NPI number
- 1205464344
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- Yes
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
6 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
105 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 | 31 | $75 |
| Replacement of Thigh Bone and Hip Joint With Prosthesis27130 | 29 | $160 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 26 | $58 |
| Replacement of Knee Joint, Both Sides of Knee27447 | 19 | $158 |
Typical Medicare-allowed amounts for these services range $58–$160 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 50 | 43 |
| Amoxicillin | 49 | 33 |
| Meloxicam | 42 | 29 |
| Tramadol Hcl | 37 | 34 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 | 12 |
| Cyclobenzaprine Hcl | 16 | 14 |
| Clindamycin Hcl | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23 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
Additional practice locations (1)
- 3 Powder Mill LnNorth Granby, CT 06060-1216Phone: (860) 413-9048
Registry dates
- Enumerated
- 2020-04-01
- Last updated
- 2020-11-12
- Certified
- 2020-11-12
Frequently asked questions
- What is Ryan Dirienzo's NPI number?
- Ryan Dirienzo's National Provider Identifier (NPI) is 1205464344, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Dirienzo's specialty?
- Ryan Dirienzo is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Ryan Dirienzo located?
- Ryan Dirienzo's practice location on file with NPPES is 16 Brentwood Dr, Ithaca, NY 14850-1863.
- What is Ryan Dirienzo's phone number?
- The practice phone number listed in the NPPES registry for Ryan Dirienzo is (607) 272-7000.
- Does Ryan Dirienzo accept Medicare?
- Ryan Dirienzo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Dirienzo's NPI active?
- Yes — Ryan Dirienzo's NPI (1205464344) is active in the NPPES registry as of the last update on 2020-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.