John Tsialas, D.O.
NPI 1629008602 · Family Medicine Physician · Syosset, NY
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Tsialas, D.O. is a Family Medicine Physician provider in Syosset, NY (NPI 1629008602).
Provider details
- NPI number
- 1629008602
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 205013 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,180 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 544 | $104 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus and Influenza87428 | 245 | $69 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 107 | $128 |
| Automated Urinalysis Test81003 | 60 | $2 |
| Detection Test By Immunoassay With Direct Visual Observation for Streptococcus, Group a (strep)87880 | 60 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 76 | 73 |
| Methylprednisolone | 61 | 60 |
| Doxycycline Monohydrate | 44 | 43 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 34 | 32 |
| Azelastine Hcl | 32 | 29 |
| Ofloxacin | 26 | 26 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 20 | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-04
- Last updated
- 2019-06-13
Frequently asked questions
- What is John Tsialas's NPI number?
- John Tsialas's National Provider Identifier (NPI) is 1629008602, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Tsialas's specialty?
- John Tsialas is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Tsialas located?
- John Tsialas's practice location on file with NPPES is 358 Jericho Tpke, Syosset, NY 11791-4544.
- What is John Tsialas's phone number?
- The practice phone number listed in the NPPES registry for John Tsialas is (516) 677-9200.
- Does John Tsialas accept Medicare?
- John Tsialas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Tsialas's NPI active?
- Yes — John Tsialas's NPI (1629008602) is active in the NPPES registry as of the last update on 2019-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.