Provider Profile
Marcelina M. Stewart, RN
Unclaimed ProfileAbout Marcelina Stewart
Marcelina M. Stewart, RN is a nurse practitioner practicing in Islip, NY. Marcelina is also listed as specializing in registered nurse, licensed practical nurse, and nurse practitioner — adult health. According to Medicare claims data, Marcelina cared for 104 Medicare patients across 152 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, face-to-face educational services related to the care of chronic kidney disease; individual, per session, per one hour, and dialysis services, 2-3 physician visits per month (20 years or older). This provider record is associated with NPI 1386968550.
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
- (917) 515-6271
- Email not available
Practice Locations
61 TAMARACK ST
Islip, NY 11751
Procedures Most Often Billed to Medicare
152 services · 104 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Dialysis services, 2-3 physician visits per month (20 years or older) | Treatment | 90961 |
22 | As often as other peers in Nurse Practitioner |
| Dialysis services, 4 or more physician visits per month (20 years or older) | Treatment | 90960 |
18 | Less often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
69 | As often as other peers in Nurse Practitioner |
| Face-to-face educational services related to the care of chronic kidney disease; individual, per session, per one hour | Billing code | G0420 |
43 | Too few peers to compare |
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.
Other nurse practitioners in Islip 5
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2020 at Other 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Dialysis services, 2-3 physician visits per month (20 years or older) 8
Providers in NY who bill this service to Medicare most often.
Common questions
What is Marcelina M. Stewart's specialty?
Marcelina M. Stewart is a nurse practitioner in Islip, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Marcelina M. Stewart?
Marcelina M. Stewart is listed at 61 Tamarack St, Islip, NY 11751. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Marcelina M. Stewart?
The number on file is (917) 515-6271. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Marcelina M. Stewart's NPI number?
Marcelina M. Stewart's National Provider Identifier is 1386968550. 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
What is Marcelina M. Stewart's education?
Marcelina M. Stewart attended Other, graduating in 2020. This comes from the CMS National Downloadable File.
CMS public data
How long has Marcelina M. Stewart been practicing?
Marcelina M. Stewart has 6 years experience. Calculated from a graduation year of 2020, reported in the CMS National Downloadable File.
CMS public data
What is Marcelina M. Stewart known for?
According to Medicare billing data, Marcelina M. Stewart provides treatments such as dialysis services, 2-3 physician visits per month and dialysis services, 4 or more physician visits per month, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Marcelina M. Stewart confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Marcelina M. Stewart. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.