Physician Profile
Unclaimed ProfileAbout TLOCZKOWSKI
Based in Greenlawn, NY, John Tloczkowski, MD is listed in the NPI registry under endocrinology. John graduated from State University of Ny Upstate Medical University in 2007. John is also listed as specializing in endocrinology, diabetes & metabolism. According to Medicare claims data, John cared for 6,795 Medicare patients across 26,991 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (631) 628-5000
- Email not available
Practice Locations
5 CUBA HILL RD
Greenlawn, NY 11740
Procedures Most Often Billed to Medicare
26,991 services · 6,795 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
1,564 |
| Fine needle aspiration biopsy using ultrasound guidance, first growth | Procedure | 10005 |
19 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
288 |
| Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | Treatment | 95251 |
226 |
| Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with provider supplied equipment | Treatment | 95250 |
29 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
14 |
| Injection, denosumab, 1 mg | Drug given | J0897 |
15,780 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
2,252 |
| 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' | Billing code | G2211 |
1,776 |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
1,291 |
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 endocrinology specialists at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 24 related providers in 3 groups
Trained at State University of Ny Upstate Medical University 8
Other providers in the same specialty who trained at the same institution.
Class of 2007 at State University of Ny Upstate Medical University 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in NY who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Tloczkowski?
Dr. Tloczkowski is an endocrinology in Greenlawn, NY. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ENDOCRINOLOGY”.
NPI registry
What is Dr. Tloczkowski's address?
Dr. Tloczkowski is listed at 5 CUBA HILL RD, Greenlawn, NY 11740. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Tloczkowski?
The number on file is (631) 628-5000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Tloczkowski's NPI number?
Dr. Tloczkowski's National Provider Identifier is 1730402702. 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
Where did Dr. Tloczkowski train?
Dr. Tloczkowski attended State University of Ny Upstate Medical University, graduating in 2007. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Tloczkowski been practicing?
Dr. Tloczkowski has 19 years experience. Calculated from a graduation year of 2007, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Tloczkowski perform?
According to Medicare billing data, Dr. Tloczkowski performs procedures including insertion of needle into vein for collection of blood sample and fine needle aspiration biopsy using ultrasound guidance, first growth; provides treatments such as injection of drug or substance under skin or into muscle and continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Tloczkowski confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Tloczkowski. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.