Stephen Patrick Markowski , AGPCNP
Nurse Practitioner โข Waltham, MA
281 Winter St Fl 2
Waltham, MA 024518740
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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Stephen Markowski is listed in NPPES under Nurse Practitioner.
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NPI assigned on April 26, 2021; this date does not establish years in practice.
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Published CMS data list 816 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:
- 93000 โ Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report: 333 service units.
- 99214 โ Established patient outpatient office visit: 306 service units.
- 93793 โ Anticoagulant management of patient taking warfarin: 77 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 5 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 4,661 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:
- Metoprolol Succinate โ 625 prescription fills, including refills.
- Eliquis (Apixaban) โ 468 prescription fills, including refills.
- Atorvastatin Calcium โ 445 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 54 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 Nurse Practitioner in Waltham, MA (2024, 12 clinicians with data). Median for this group: 422. Middle half: 107 to 548.
More Medicare Part B services than 80% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,536 clinicians with data). Median for this group: 293. Middle half: 113 to 625.
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 472 in 2023 to 816 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023โ2024.
Practice Location & Contact Primary Location
281 Winter St Fl 2
Waltham, MA 024518740
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: Heart Center Of Metrowest, 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: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
360 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 $46,770 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 $35,702 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
11,692 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
$890,459 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.
Open Payments general payments, program year 2025
All general payments: $83.81 across 2 records.
By nature of payment
- Food and Beverage: $83.81 across 2 records.
Reporting-company totals
- Boston Scientific Corporation: $52.11 across 1 record.
- Novartis Pharmaceuticals Corporation: $31.70 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
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, 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)
Stephen Markowski 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 Stephen Markowski 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 Waltham 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 in Waltham, MA (2024, 12 clinicians with data). Median for this group: 422. Middle half: 107 to 548.
More Medicare Part B services than 80% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,536 clinicians with data). Median for this group: 293. Middle half: 113 to 625.
Medicare-allowed amount
Close to the middle for clinicians listed under Nurse Practitioner in Waltham, MA (2024, 12 clinicians with data). Median for this group: $46,659. Middle half: $12,420 to $53,509.
A higher Medicare-allowed amount than 70% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,536 clinicians with data). Median for this group: $24,187. Middle half: $9,751 to $49,233.
Paid by Medicare
Close to the middle for clinicians listed under Nurse Practitioner in Waltham, MA (2024, 12 clinicians with data). Median for this group: $35,991. Middle half: $8,912 to $39,685.
A higher Medicare payment amount than 70% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,536 clinicians with data). Median for this group: $18,312. Middle half: $7,110 to $37,062.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under Nurse Practitioner in Waltham, MA (2024, 13 clinicians with data). Median for this group: 238. Middle half: 98 to 1,354.
More Part D prescriptions than 95% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,589 clinicians with data). Median for this group: 330. Middle half: 89 to 1,072.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Nurse Practitioner in Waltham, MA (2024, 13 clinicians with data). Median for this group: $46,184. Middle half: $16,146 to $122,722.
A higher Part D drug cost than 90% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,589 clinicians with data). Median for this group: $25,224. Middle half: $1,758 to $161,316.
25 active clinicians are listed under Nurse Practitioner with a practice address in Waltham, MA (3,483 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Waltham
24% of these 25 clinicians have the CMS telehealth indicator.
44% of these 25 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 73% from 472 in 2023 to 816 in 2024.
- 2023: 472
- 2024: 816
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Medicare-allowed amount
Medicare-allowed amount increased 48% from $31,644 in 2023 to $46,770 in 2024.
- 2023: $31,644
- 2024: $46,770
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Paid by Medicare
Paid by Medicare increased 42% from $25,167 in 2023 to $35,702 in 2024.
- 2023: $25,167
- 2024: $35,702
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 1614% from 272 in 2021 to 4,661 in 2024.
- 2021: 272
- 2022: 2,240
- 2023: 4,389
- 2024: 4,661
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30-day fills
30-day fills increased 4076% from 280 in 2021 to 11,692 in 2024.
- 2021: 280
- 2022: 2,302
- 2023: 10,899
- 2024: 11,692
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Part D drug cost
Part D drug cost increased 24857% from $3,568 in 2021 to $890,459 in 2024.
- 2021: $3,568
- 2022: $86,671
- 2023: $793,068
- 2024: $890,459
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $61.92 in 2021 to $83.81 in 2025.
- 2021: $61.92
- 2023: $17.54
- 2024: $91.01
- 2025: $83.81
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $83.81.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
WATCHMAN FLX | General | $52.11 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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LEQVIO | General | $31.70 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2022โ2023 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, 2023โ2024; 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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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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333 | 285 | $51.08 | $13.35 |
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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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306 | 262 | $381.07 | $118.61 |
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93793
Anticoagulant management of patient taking warfarin
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77 | 54 | $40.00 | $10.48 |
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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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60 | 56 | $269.27 | $84.24 |
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85610
Blood test, clotting time
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40 | 31 | $10.61 | $4.20 |
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 |
|---|---|---|---|---|---|
| Metoprolol Succinate | Metoprolol Succinate | 625 | 50,807 | $13,603.80 | 299 |
| Eliquis | Apixaban | 468 | 27,475 | $515,316.54 | 168 |
| Atorvastatin Calcium | Atorvastatin Calcium | 445 | 36,820 | $6,938.82 | 223 |
| Amlodipine Besylate | Amlodipine Besylate | 296 | 23,421 | $1,940.33 | 148 |
| Losartan Potassium | Losartan Potassium | 240 | 17,410 | $2,400.85 | 113 |
| Lisinopril | Lisinopril | 217 | 17,256 | $1,449.95 | 101 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 185 | 14,710 | $4,021.31 | 91 |
| Furosemide | Furosemide | 166 | 12,474 | $1,095.27 | 85 |
| Ezetimibe | Ezetimibe | 137 | 11,073 | $5,832.32 | 68 |
| Carvedilol | Carvedilol | 121 | 9,436 | $1,808.48 | 55 |
| Spironolactone | Spironolactone | 108 | 8,304 | $1,272.34 | 52 |
| Hydrochlorothiazide | Hydrochlorothiazide | 91 | 6,906 | $332.57 | 39 |
| Clopidogrel | Clopidogrel Bisulfate | 90 | 7,827 | $1,153.94 | 51 |
| Pravastatin Sodium | Pravastatin Sodium | 87 | 7,026 | $1,930.99 | 41 |
| Xarelto | Rivaroxaban | 84 | 5,507 | $99,004.23 | 29 |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 76 | 5,565 | $2,310.60 | 34 |
| Torsemide | Torsemide | 71 | 5,004 | $1,644.98 | 31 |
| Metoprolol Tartrate | Metoprolol Tartrate | 70 | 5,957 | $560.21 | 36 |
| Valsartan | Valsartan | 70 | 6,001 | $2,903.54 | 31 |
| Warfarin Sodium | Warfarin Sodium | 65 | 5,803 | $890.92 | 30 |
| Potassium Chloride | Potassium Chloride | 63 | 4,737 | $1,951.49 | 30 |
| Atenolol | Atenolol | 60 | 5,220 | $741.47 | 28 |
| Sotalol | Sotalol Hcl | 57 | 4,759 | $1,280.93 | 29 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 51 | 3,450 | $1,144.21 | 21 |
| Entresto | Sacubitril/Valsartan | 49 | 2,010 | $44,161.92 | 13 |
(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: 2026-05-12NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
NUCC Taxonomy Code: 363LP2300X
NUCC Taxonomy Code: 163W00000X
(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20230222000783
MA
7810398005
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
Heart Center Of Metrowest, Inc.
99 Lincoln St, Framingham, MA 017026327
Phone: 5088754811
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Anesthesiology - Pain Medicine
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 281 WINTER ST FL 2, WALTHAM, MA 024518740 (Tel: 7813732940)
Registered at 281 WINTER ST FL 2, WALTHAM, MA 024518740 (Tel: 7813732940)
Registered at 99 LINCOLN ST, FRAMINGHAM, MA 017026327 (Tel: 5088754811)
Registered at 99 LINCOLN ST, FRAMINGHAM, MA 017026327 (Tel: 5088754811)
Registered at 255 N WHITE RD STE 200B, SAN JOSE, CA 951271966 (Tel: 8883574188)
Registered at 4855 ATHERTON AVE, SAN JOSE, CA 951301026 (Tel: 4089632400)
NPI status registered as active in NPPES database
Registered at 191 VISTA DEL MONTE, LOS GATOS, CA 950306336 (Tel: 4084388511)
Registered at 191 VISTA DEL MONTE, LOS GATOS, CA 950306336 (Tel: 4084388511)
Recorded as STEPHEN MARKOWSKI, AGPCNP
Nurse Practitioner (license number reported to NPPES: CA 95015353)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Waltham
- Aimee Keller, MS, FNP-BC
- Maegan Picariello, NP
- Meghan Muniz
- Larissa Engleman, NP
- Anne Marie Bourque, NP
- Bridget Donovan, FNP-BC
Mailing Address
281 Winter St Fl 2
Waltham, MA 024518740
Phone: 7813732940