Are you Olivia R. Demarco? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 64 Commerce Ave, Riverhead, NY 11901
About Olivia Demarco
Olivia R. Demarco is a physician assistant based in Riverhead, NY. According to Medicare claims data, Olivia cared for 2,045 Medicare patients across 5,458 services. The services billed most often include injection, triamcinolone acetonide, not otherwise specified, 10 mg, aspiration and/or injection of fluid from large joint, and hyaluronan or derivative, euflexxa, for intra-articular injection, per dose. The provider's National Provider Identifier (NPI) is 1962019760.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (631) 369-5000
- Email not available
Practice Locations
64 COMMERCE AVE
Riverhead, NY 11901
Procedures Most Often Billed to Medicare
5,458 services · 2,045 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
791 | More than most peers in Physician Assistant |
| X-ray of knee, 4 or more views | Imaging | 73564 |
249 | More than most peers in Physician Assistant |
| X-ray of hip, 2-3 views | Imaging | 73502 |
198 | More than most peers in Physician Assistant |
| X-ray of knee, 3 views | Imaging | 73562 |
78 | More often than most peers in Physician Assistant |
| X-ray of both hips, 3-4 views | Imaging | 73522 |
30 | More often than most peers in Physician Assistant |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | Drug given | J3301 |
2,680 | More than most peers in Physician Assistant |
| Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose | Drug given | J7323 |
518 | More than most peers in Physician Assistant |
| Injection, ketorolac tromethamine, per 15 mg | Drug given | J1885 |
38 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
478 | More than most peers in Physician Assistant |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
213 | More often than most peers in Physician Assistant |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other physician assistants in Riverhead 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2023 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 7
Providers in NY who bill this service to Medicare most often.
Common questions
What kind of doctor is Olivia R. Demarco?
Olivia R. Demarco is a physician assistant in Riverhead, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Olivia R. Demarco's address?
Olivia R. Demarco is listed at 64 Commerce Ave, Riverhead, NY 11901. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Olivia R. Demarco?
The number on file is (631) 369-5000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Olivia R. Demarco's NPI number?
Olivia R. Demarco's National Provider Identifier is 1962019760. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Olivia R. Demarco train?
Olivia R. Demarco attended Other, graduating in 2023. This comes from the CMS National Downloadable File.
CMS public data
How long has Olivia R. Demarco been practicing?
Olivia R. Demarco has 3 years experience. Calculated from a graduation year of 2023, reported in the CMS National Downloadable File.
CMS public data
What procedures does Olivia R. Demarco perform?
According to Medicare billing data, Olivia R. Demarco performs procedures including aspiration and/or injection of fluid from large joint; reads or performs imaging such as x-ray of knee, 4 or more views and x-ray of hip, 2-3 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Olivia R. Demarco confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Olivia R. Demarco. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.