Physician Profile
Gregory Zanieski, MD
Unclaimed ProfileAbout Dr. Zanieski
Gregory Zanieski, MD is a healthcare provider in New Haven, CT specializing in surgery of the hand. Gregory trained at State University of New York at Stony Brook, School of Medicine, graduating in 2002. Gregory is also listed as specializing in surgery. According to Medicare claims data, Gregory cared for 84 Medicare patients across 96 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 and new patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more.
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
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (203) 785-3577
- Email not available
Practice Locations
SMILOW CANCER HOSPITAL AT YALE-NEW HAVEN 35 PARK STREET, 8TH FLOOR CLINIC
New Haven, CT 06510
Procedures Most Often Billed to Medicare
96 services · 84 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
78 | More often than most peers in Surgery of the Hand |
| 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 |
18 | Less often than most peers in Surgery of the Hand |
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.
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.
Other surgery of the hands in New Haven 8
Same specialty, same city.
Trained at State University of New York at Stony Brook, School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2002 at State University of New York at Stony Brook, School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Zanieski specialize in?
Dr. Zanieski is a surgery of the hand in New Haven, CT. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Zanieski located?
Dr. Zanieski is listed at Smilow Cancer Hospital at Yale-New Haven 35 Park Street, 8Th Floor Clinic, New Haven, CT 06510. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Zanieski's phone number?
The number on file is (203) 785-3577. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Zanieski's NPI number?
Dr. Zanieski's National Provider Identifier is 1235320474. 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. Zanieski go to medical school?
Dr. Zanieski attended State University of New York at Stony Brook, School of Medicine, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Zanieski been practicing?
Dr. Zanieski has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Zanieski do most often?
According to Medicare billing data, Dr. Zanieski 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
Has Dr. Zanieski confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Zanieski. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.