Ellen Sierra , PA
Physician Assistant โข Oceanside, NY
1 Healthy Way
Oceanside, NY 115721551
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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NPI assigned on December 21, 2005; this date does not establish years in practice.
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Published CMS data list 718 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 โ Established patient outpatient office visit: 306 service units.
- 87428 โ Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza: 134 service units.
- 81003 โ Automated urinalysis test: 54 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ 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 ยท Guide: How to read Medicare Part B data
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Published CMS data list 451 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) โ 58 prescription fills, including refills.
- Ciprofloxacin Hcl โ 45 prescription fills, including refills.
- Albuterol Sulfate Hfa (Albuterol Sulfate) โ 40 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 18 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Physician Assistant in Oceanside, NY (2024, 19 clinicians with data). Median for this group: 82. Middle half: 33 to 292.
More Medicare Part B services than 85% 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 โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 79 in 2020 to 718 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
1 Healthy Way
Oceanside, NY 115721551
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: City Medical Of Upper East Side Pllc. 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
2002
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
428 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 โ by Provider, 2024.
Medicare-allowed amount
About $51,305 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 โ by Provider and Service, 2024.
Paid by Medicare
About $38,415 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 โ by Provider and Service, 2024.
30-day fills
453 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
$13,799 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 โ by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021โ2025.
Years since graduation
24 years (graduated 2002)
CMS Doctors and Clinicians data list 2002 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
2005
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, โDoes your provider accept Medicare as full payment?โ
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)
Ellen Sierra 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 Ellen Sierra 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 Oceanside and New York
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Physician Assistant in Oceanside, NY (2024, 19 clinicians with data). Median for this group: 82. Middle half: 33 to 292.
More Medicare Part B services than 85% 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 90% of clinicians listed under Physician Assistant in Oceanside, NY (2024, 19 clinicians with data). Median for this group: $5,647. Middle half: $2,467 to $25,677.
A higher Medicare-allowed amount than 85% 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 90% of clinicians listed under Physician Assistant in Oceanside, NY (2024, 19 clinicians with data). Median for this group: $4,499. Middle half: $1,969 to $19,914.
A higher Medicare payment amount than 85% 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 95% of clinicians listed under Physician Assistant in Oceanside, NY (2024, 27 clinicians with data). Median for this group: 75. Middle half: 52 to 188.
More Part D prescriptions than 65% 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 90% of clinicians listed under Physician Assistant in Oceanside, NY (2024, 27 clinicians with data). Median for this group: $1,309. Middle half: $744 to $2,194.
A higher Part D drug cost than 60% of 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.
60 active clinicians are listed under Physician Assistant with a practice address in Oceanside, NY (15,558 in New York).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Oceanside
0% of these 60 clinicians have the CMS telehealth indicator.
50% of these 60 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 increased 809% from 79 in 2020 to 718 in 2024.
- 2020: 79
- 2021: 446
- 2022: 760
- 2023: 661
- 2024: 718
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Medicare-allowed amount
Medicare-allowed amount increased 726% from $6,214 in 2020 to $51,305 in 2024.
- 2020: $6,214
- 2021: $36,588
- 2022: $48,788
- 2023: $41,578
- 2024: $51,305
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Paid by Medicare
Paid by Medicare increased 602% from $5,469 in 2020 to $38,415 in 2024.
- 2020: $5,469
- 2021: $33,680
- 2022: $44,194
- 2023: $33,235
- 2024: $38,415
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 860% from 47 in 2020 to 451 in 2024.
- 2020: 47
- 2021: 70
- 2022: 217
- 2023: 304
- 2024: 451
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30-day fills
30-day fills increased 864% from 47 in 2020 to 453 in 2024.
- 2020: 47
- 2021: 70
- 2022: 217
- 2023: 306
- 2024: 453
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Part D drug cost
Part D drug cost went from $394 in 2020 to $13,799 in 2024.
- 2020: $394
- 2021: $813
- 2022: $2,897
- 2023: $3,049
- 2024: $13,799
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 ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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 โ by Provider and Service data, 2017โ2024; 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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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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306 | 301 | $205.57 | $87.84 |
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87428
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza
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134 | 133 | $150.00 | $68.59 |
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81003
Automated urinalysis test
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54 | 54 | $8.00 | $2.20 |
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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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53 | 53 | $300.00 | $124.18 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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46 | 46 | $302.00 | $109.07 |
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87880
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)
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33 | 33 | $30.00 | $16.20 |
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87426
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus
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28 | 28 | $100.00 | $34.62 |
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71046
X-ray of chest, 2 views
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27 | 27 | $110.00 | $32.44 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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15 | 15 | $123.00 | $55.25 |
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36415
Insertion of needle into vein for collection of blood sample
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11 | 11 | $8.00 | $7.84 |
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90471
Administration of vaccine
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11 | 11 | $30.00 | $20.25 |
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 |
|---|---|---|---|---|---|
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 58 | 507 | $405.85 | 58 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 45 | 300 | $175.49 | 45 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 40 | 1,026 | $903.72 | 34 |
| Prednisone | Prednisone | 36 | 193 | $46.60 | 36 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 36 | 239 | $311.56 | 36 |
| Paxlovid | Nirmatrelvir/Ritonavir | 33 | 180 | $2,858.80 | 33 |
| Amoxicillin | Amoxicillin | 27 | 225 | $101.83 | 26 |
| Cephalexin | Cephalexin | 26 | 180 | $141.43 | 25 |
| Azithromycin | Azithromycin | 21 | 101 | $64.61 | 20 |
| Fluticasone Propionate | Fluticasone Propionate | 19 | 570 | $186.00 | 18 |
| Polymyxin B Sul-Trimethoprim | Polymyxin B Sulf/Trimethoprim | 16 | 270 | $106.70 | 14 |
| Oseltamivir Phosphate | Oseltamivir Phosphate | 16 | 80 | $532.14 | 16 |
| Methylprednisolone | Methylprednisolone | 15 | 90 | $83.07 | 15 |
| Lagevrio (Eua) | Molnupiravir | 15 | 75 | $7,514.10 | 15 |
| Cefdinir | Cefdinir | 13 | 117 | $192.77 | 13 |
| Doxycycline Hyclate | Doxycycline Hyclate | 12 | 86 | $59.58 | 12 |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 12 | 84 | $88.02 | 12 |
| Penicillin V Potassium | Penicillin V Potassium | 11 | 107 | $26.56 | 11 |
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
NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20241028001379
CT
4082690821
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
City Medical Of Upper East Side Pllc
560 Merrick Rd, Rockville Centre, NY 115705445
Phone: 5168582373
City Medical Of Upper East Side Pllc
1989 Merrick Rd, Merrick, NY 115664643
Phone: 5165844448
City Medical Of Upper East Side Pllc
2459 Merrick Rd, Bellmore, NY 117105703
Phone: 5168262273
City Medical Of Upper East Side Pllc
336 E 86th St, New York, NY 100284615
Phone: 2127723627
City Medical Of Upper East Side Pllc
235 Glen Cove Rd, Carle Place, NY 115141221
Phone: 5168772273
City Medical Of Upper East Side Pllc
30 Franklin Ave, Franklin Square, NY 110102527
Phone: 5163520253
City Medical Of Upper East Side Pllc
4410 Sunrise Hwy, Massapequa, NY 117585346
Phone: 5169981024
City Medical Of Upper East Side Pllc
1919 Hempstead Tpke, East Meadow, NY 115541710
Phone: 5162272273
City Medical Of Upper East Side Pllc
292 Herricks Rd, Mineola, NY 115011119
Phone: 5167462273
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant
Physician Assistant
Nurse Practitioner
Nurse Practitioner
Physician Assistant
Physician Assistant (Certified)
Emergency Medicine
Physician Assistant
Career & Practice History
NPI enumerated December 21, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Physician Assistants in Oceanside
- Brianna Molnar, PA-C
- Yitzchok Rosenbaum, PHYSICIAN ASSISTANT
- Carlos Coello, PA-C
- Kaitlyn Oliveri, PA-C
- Gina Pontrelli, PA
- Chandni Thakkar, PA-C
Mailing Address
Po Box 826223
Philadelphia, PA 191826223
Phone: 8668987142