Olivia Anne Slezik , NP
Nurse Practitioner - Primary Care • Worcester, MA
486 Chandler St
Worcester, MA 016022861
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 Slezik is listed in NPPES under Nurse Practitioner - Primary Care.
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NPI assigned on April 29, 2021; this date does not establish years in practice.
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Published CMS data list 1,407 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:
- 99214 — Established patient outpatient office visit: 208 service units.
- 99213 — Established patient outpatient office visit: 202 service units.
- 36415 — Insertion of needle into vein for collection of blood sample: 174 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 32 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 804 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:
- Atorvastatin Calcium — 50 prescription fills, including refills.
- Prednisone — 46 prescription fills, including refills.
- Amlodipine Besylate — 46 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 35 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Nurse Practitioner - Primary Care in Massachusetts (2024, 155 clinicians with data). Median for this group: 394. Middle half: 126 to 792.
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 777 in 2022 to 1,407 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022–2024.
Practice Location & Contact Primary Location
486 Chandler St
Worcester, MA 016022861
CMS Doctors and Clinicians lists 1 group name: Atrius Health Inc. 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
2020
What Public CMS Data Show
Nurse Practitioner - Primary Care: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
329 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 $49,660 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 $37,330 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
1,560 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
$55,765 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
6 years (graduated 2020)
CMS Doctors and Clinicians data list 2020 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
2021
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?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Olivia Slezik 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 Slezik 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 Worcester and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Nurse Practitioner - Primary Care in Massachusetts (2024, 155 clinicians with data). Median for this group: 394. Middle half: 126 to 792.
Too few clinicians listed under Nurse Practitioner - Primary Care in Worcester have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 70% of clinicians listed under Nurse Practitioner - Primary Care in Massachusetts (2024, 155 clinicians with data). Median for this group: $29,182. Middle half: $9,847 to $56,969.
Too few clinicians listed under Nurse Practitioner - Primary Care in Worcester have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 70% of clinicians listed under Nurse Practitioner - Primary Care in Massachusetts (2024, 155 clinicians with data). Median for this group: $21,750. Middle half: $7,060 to $43,252.
Too few clinicians listed under Nurse Practitioner - Primary Care in Worcester have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Nurse Practitioner - Primary Care in Massachusetts (2024, 180 clinicians with data). Median for this group: 586. Middle half: 181 to 1,728.
Too few clinicians listed under Nurse Practitioner - Primary Care in Worcester have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Nurse Practitioner - Primary Care in Massachusetts (2024, 180 clinicians with data). Median for this group: $43,198. Middle half: $2,819 to $154,994.
Too few clinicians listed under Nurse Practitioner - Primary Care in Worcester have Medicare Part D data for 2024 to compare.
14 active clinicians are listed under Nurse Practitioner - Primary Care with a practice address in Worcester, MA (376 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Worcester
21.4% of these 14 clinicians have the CMS telehealth indicator.
35.7% of these 14 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 81% from 777 in 2022 to 1,407 in 2024.
- 2022: 777
- 2023: 1,172
- 2024: 1,407
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Medicare-allowed amount
Medicare-allowed amount increased 24% from $40,191 in 2022 to $49,660 in 2024.
- 2022: $40,191
- 2023: $50,174
- 2024: $49,660
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Paid by Medicare
Paid by Medicare increased 18% from $31,701 in 2022 to $37,330 in 2024.
- 2022: $31,701
- 2023: $35,999
- 2024: $37,330
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 344% from 181 in 2022 to 804 in 2024.
- 2022: 181
- 2023: 477
- 2024: 804
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30-day fills
30-day fills increased 376% from 328 in 2022 to 1,560 in 2024.
- 2022: 328
- 2023: 914
- 2024: 1,560
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Part D drug cost
Part D drug cost increased 1483% from $3,523 in 2022 to $55,765 in 2024.
- 2022: $3,523
- 2023: $40,283
- 2024: $55,765
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 2021–2023 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, 2022–2024; 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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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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208 | 161 | $348.56 | $83.01 |
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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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202 | 166 | $268.07 | $71.76 |
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36415
Insertion of needle into vein for collection of blood sample
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174 | 125 | $20.00 | $8.65 |
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80053
Blood test, comprehensive group of blood chemicals
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86 | 75 | $43.00 | $10.35 |
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85027
Complete blood cell count (red cells, white blood cell, platelets), automated test
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68 | 61 | $26.00 | $6.28 |
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84443
Blood test, thyroid stimulating hormone (tsh)
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54 | 48 | $68.00 | $16.46 |
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80061
Blood test, lipids (cholesterol and triglycerides)
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52 | 49 | $67.00 | $13.12 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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42 | 36 | $31.00 | $7.61 |
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83036
Hemoglobin a1c level
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41 | 37 | $39.00 | $9.52 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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41 | 41 | $363.00 | $62.83 |
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85651
Red blood cell sedimentation rate, to detect inflammation, non-automated
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40 | 34 | $14.00 | $4.18 |
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86140
Measurement c-reactive protein for detection of infection or inflammation
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37 | 31 | $21.00 | $5.08 |
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80048
Blood test, basic group of blood chemicals (calcium, total)
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36 | 31 | $34.00 | $8.29 |
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82570
Creatinine level to test for kidney function or muscle injury
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27 | 25 | $21.00 | $5.08 |
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82043
Urine microalbumin (protein) level
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26 | 25 | $23.00 | $5.66 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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25 | 22 | $529.00 | $100.41 |
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87400
Detection test by immunoassay technique for influenza virus
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24 | 11 | $49.00 | $13.85 |
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87086
Bacterial colony count, urine
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23 | 22 | $33.00 | $7.91 |
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
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20 | 17 | $48.00 | $14.74 |
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G0008
Administration of influenza virus vaccine
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19 | 19 | $70.00 | $35.30 |
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87635
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen
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17 | 15 | $209.00 | $50.28 |
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82607
Cyanocobalamin (vitamin b-12) level
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16 | 16 | $61.00 | $14.78 |
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82306
Vitamin d-3 level
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15 | 15 | $119.00 | $29.01 |
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90653
Influenza vaccine, inactivated
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15 | 15 | $138.00 | $81.82 |
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87077
Bacterial culture for aerobic isolates
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14 | 14 | $33.00 | $7.92 |
(top 25 shown)
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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 50 | 4,438 | $666.64 | 21 |
| Prednisone | Prednisone | 46 | 348 | $87.88 | 38 |
| Amlodipine Besylate | Amlodipine Besylate | 46 | 3,030 | $308.68 | 19 |
| Citalopram Hbr | Citalopram Hydrobromide | 43 | 3,492 | $530.87 | 17 |
| Lorazepam | Lorazepam | 40 | 953 | $175.57 | 23 |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 36 | 207 | $231.74 | 33 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 36 | 3,180 | $1,014.35 | 19 |
| Losartan Potassium | Losartan Potassium | 35 | 2,751 | $424.73 | 17 |
| Metoprolol Succinate | Metoprolol Succinate | 34 | 2,274 | $502.04 | 13 |
| Sertraline Hcl | Sertraline Hcl | 32 | 2,450 | $267.98 | 15 |
| Gabapentin | Gabapentin | 27 | 1,465 | $225.42 | 13 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 27 | 744 | $1,082.86 | 17 |
| Lisinopril | Lisinopril | 26 | 2,280 | $191.94 | 11 |
| Metformin Hcl Er | Metformin Hcl | 21 | 930 | $123.79 | — |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 21 | 105 | $136.91 | 19 |
| Levothyroxine Sodium | Levothyroxine Sodium | 19 | 1,480 | $262.91 | — |
| Omeprazole | Omeprazole | 18 | 1,275 | $263.52 | — |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 17 | 111 | $80.03 | 16 |
| Trulicity | Dulaglutide | 17 | 476 | $16,632.26 | — |
| Budesonide-Formoterol Fumarate | Budesonide/Formoterol Fumarate | 17 | 600 | $3,491.77 | — |
| Chlorthalidone | Chlorthalidone | 16 | 1,020 | $241.10 | — |
| Jardiance | Empagliflozin | 16 | 480 | $9,481.78 | — |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 15 | 454 | $134.72 | 12 |
| Paroxetine Hcl | Paroxetine Hcl | 14 | 840 | $180.82 | — |
| Cefuroxime | Cefuroxime Axetil | 14 | 74 | $116.55 | 12 |
(top 25 shown)
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: 2021-04-29NUCC Taxonomy Code: 363LP2300X
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20211102002046
MA
4880082320
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
Atrius Health Inc
330 Baker Ave, Concord, MA 017422129
Phone: 9782879300
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 - Adult Health
APRNBC
Career & Practice History
NPI enumerated April 29, 2021.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from May 2021 to August 2026.
NPI Administrative Meta
Other Nurse Practitioner - Primary Care Specialists in Worcester
- Alicia Cooksey, NP
- Rose Marie Nyakako, AGPCNP-BC, RN
- Althea Keeling, CNP
- Elizabeth Tomkinson
- Amanda Clancey, NP
- Benjamin Alfred, NP
Mailing Address
486 Chandler St
Worcester, MA 016022861
Phone: 5089298875