Olivia Renee Demarco
Physician Assistant • Riverhead, NY
64 Commerce Ave
Riverhead, NY 119014455
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Olivia Demarco is listed in NPPES under Physician Assistant.
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NPI assigned on September 25, 2020; this date does not establish years in practice.
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Published CMS data list 5,458 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- J3301 — Injection, triamcinolone acetonide, not otherwise specified, 10 mg: 2,680 service units.
- 20610 — Aspiration and/or injection of fluid from large joint: 791 service units.
- J7323 — Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose: 518 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 11 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 682 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Oxycodone Hcl — 191 prescription fills, including refills.
- Diclofenac Sodium — 137 prescription fills, including refills.
- Meloxicam — 100 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 9 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under Physician Assistant in Riverhead, NY (2024, 18 clinicians with data). Median for this group: 859. Middle half: 192 to 1,894.
More Medicare Part B services than 95% of clinicians listed under Physician Assistant in New York (2024, 5,025 clinicians with data). Median for this group: 151. Middle half: 53 to 410.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 15 in 2020 to 5,458 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
64 Commerce Ave
Riverhead, NY 119014455
CMS Doctors and Clinicians lists 1 group name: Peconic Bay Primary Medical Care. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2023
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
678 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $263,245 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $202,460 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
693 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$3,942 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021–2025.
Years since graduation
3 years (graduated 2023)
CMS Doctors and Clinicians data list 2023 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2020
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Olivia Demarco has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Olivia Demarco as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Riverhead and New York
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 95% of clinicians listed under Physician Assistant in Riverhead, NY (2024, 18 clinicians with data). Median for this group: 859. Middle half: 192 to 1,894.
More Medicare Part B services than 95% of clinicians listed under Physician Assistant in New York (2024, 5,025 clinicians with data). Median for this group: 151. Middle half: 53 to 410.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Physician Assistant in Riverhead, NY (2024, 18 clinicians with data). Median for this group: $41,291. Middle half: $14,829 to $81,198.
A higher Medicare-allowed amount than 95% of clinicians listed under Physician Assistant in New York (2024, 5,025 clinicians with data). Median for this group: $12,004. Middle half: $4,378 to $28,196.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Physician Assistant in Riverhead, NY (2024, 18 clinicians with data). Median for this group: $30,459. Middle half: $9,994 to $61,528.
A higher Medicare payment amount than 95% of clinicians listed under Physician Assistant in New York (2024, 5,025 clinicians with data). Median for this group: $8,890. Middle half: $3,209 to $20,987.
Medicare Part D prescriptions
More Part D prescriptions than 70% of clinicians listed under Physician Assistant in Riverhead, NY (2024, 28 clinicians with data). Median for this group: 199. Middle half: 33 to 695.
More Part D prescriptions than 75% of clinicians listed under Physician Assistant in New York (2024, 6,800 clinicians with data). Median for this group: 172. Middle half: 46 to 640.
Part D drug cost
A higher Part D drug cost than 60% of clinicians listed under Physician Assistant in Riverhead, NY (2024, 28 clinicians with data). Median for this group: $2,299. Middle half: $173 to $61,578.
Close to the middle for clinicians listed under Physician Assistant in New York (2024, 6,800 clinicians with data). Median for this group: $2,860. Middle half: $381 to $63,975.
51 active clinicians are listed under Physician Assistant with a practice address in Riverhead, NY (15,558 in New York).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Riverhead
3.9% of these 51 clinicians have the CMS telehealth indicator.
78.4% of these 51 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services went from 15 in 2020 to 5,458 in 2024.
- 2020: 15
- 2021: 2,289
- 2022: 2,470
- 2023: 4,890
- 2024: 5,458
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Medicare-allowed amount
Medicare-allowed amount increased 22844% from $1,147 in 2020 to $263,245 in 2024.
- 2020: $1,147
- 2021: $177,391
- 2022: $200,266
- 2023: $248,617
- 2024: $263,245
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Paid by Medicare
Paid by Medicare went from $918 in 2020 to $202,460 in 2024.
- 2020: $918
- 2021: $140,035
- 2022: $153,080
- 2023: $190,557
- 2024: $202,460
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 11 in 2020 to 682 in 2024.
- 2020: 11
- 2021: 616
- 2022: 736
- 2023: 852
- 2024: 682
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30-day fills
30-day fills went from 11 in 2020 to 693 in 2024.
- 2020: 11
- 2021: 633
- 2022: 739
- 2023: 857
- 2024: 693
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Part D drug cost
Part D drug cost went from $99 in 2020 to $3,942 in 2024.
- 2020: $99
- 2021: $4,545
- 2022: $5,454
- 2023: $9,818
- 2024: $3,942
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2019–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2020–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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2,680 | 254 | $3.00 | $0.96 |
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20610
Aspiration and/or injection of fluid from large joint
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791 | 355 | $256.86 | $75.76 |
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J7323
Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose
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518 | 146 | $324.00 | $118.79 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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478 | 354 | $390.00 | $125.49 |
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73564
X-ray of knee, 4 or more views
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249 | 246 | $184.67 | $60.97 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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213 | 192 | $275.00 | $89.45 |
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73502
X-ray of hip, 2-3 views
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198 | 185 | $144.00 | $48.00 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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185 | 185 | $510.00 | $162.69 |
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73562
X-ray of knee, 3 views
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78 | 76 | $144.23 | $47.89 |
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J1885
Injection, ketorolac tromethamine, per 15 mg
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38 | 23 | $1.00 | $0.67 |
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73522
X-ray of both hips, 3-4 views
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30 | 29 | $163.00 | $54.40 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Oxycodone Hcl | Oxycodone Hcl | 191 | 1,308 | $1,134.97 | 131 |
| Diclofenac Sodium | Diclofenac Sodium | 137 | 4,058 | $1,097.38 | 122 |
| Meloxicam | Meloxicam | 100 | 2,993 | $341.72 | 77 |
| Amoxicillin | Amoxicillin | 71 | 358 | $195.93 | 59 |
| Tramadol Hcl | Tramadol Hcl | 64 | 577 | $165.93 | 55 |
| Methylprednisolone | Methylprednisolone | 56 | 337 | $374.50 | 54 |
| Prednisone | Prednisone | 25 | 213 | $29.27 | 23 |
| Azithromycin | Azithromycin | 20 | 150 | $96.54 | 16 |
| Celecoxib | Celecoxib | 18 | 591 | $506.12 | 13 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2020-11-09NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20260612002421
FL
8921411190
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Peconic Bay Primary Medical Care
34 Commerce Ave, Riverhead, NY 119013118
Phone: 6317271600
Peconic Bay Primary Medical Care
64 Commerce Ave, Riverhead, NY 119014455
Phone: 6313695000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Orthopaedic Surgery - Sports Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Orthopaedic Surgery - Hand Surgery
Doctor of Medicine (M.D.)
Physician Assistant - Medical
Physician Assistant (Certified)
Family Medicine - Sports Medicine
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 64 COMMERCE AVE, RIVERHEAD, NY 119014455 (Tel: 6313695000)
NPI status registered as active in NPPES database
Registered at 10 BARNSLEY CRES, MOUNT SINAI, NY 117662800 (Tel: 6315666446)
Registered at 10 BARNSLEY CRES, MOUNT SINAI, NY 117662800 (Tel: 6315666446)
Recorded as OLIVIA DEMARCO
Physician Assistant (license number reported to NPPES: NY 025666)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Riverhead
- Kristie Gering, PHYSICIAN ASSISTANT
- Eric Koenigsdorf, PA
- Alexis Breest, PHYSICIAN ASSISTANT
- Joanne Cotrone, RPA-C
- David Berezny Jr, RPA-C, MMS
- Jeremiah Edington, RPA-C
Mailing Address
10 Barnsley Cres
Mount Sinai, NY 117662800
Phone: 6315666446