Are you Ioannis Tassiulas, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileBased in New York, NY, Ioannis Tassiulas, M.D. is listed in the NPI registry under rheumatology. According to Medicare claims data, Ioannis cared for 196 Medicare patients across 328 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more and new patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more. NPI 1215227988 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
5 E 98TH ST
New York, NY 10029
19 Bradhurst Ave Suite 3090
Hawthorne, NY 10532
Within Rheumatology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
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328 services · 196 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
278 | As often as other peers in Rheumatology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
50 | More often than most peers in Rheumatology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Ioannis Tassiulas is a rheumatologist in New York, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Rheumatology”.
NPI registry
Ioannis Tassiulas is listed at 5 E 98Th St, New York, NY 10029. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (212) 241-1671. Contact the office directly to confirm availability and scheduling.
NPI registry
Ioannis Tassiulas's National Provider Identifier is 1215227988. 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
Ioannis Tassiulas has 15+ years experience. Registered with an NPI since 2011. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
According to Medicare billing data, Ioannis Tassiulas the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Ioannis Tassiulas. If this is you, claiming it is free.
Guide.md
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