Physician Profile
Based in Port Jefferson, NY, Shelly S. Groenendyk, MD is listed in the NPI registry under anesthesiology. Shelly graduated from University of Tennessee, Hsc, College of Medicine in 2016. According to Medicare claims data, the services billed most often include anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope. NPI 1083060917 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.
75 N COUNTRY RD
Port Jefferson, NY 11777
3601 The Vanderbilt Clinic
Nashville, TN 37232
Within Anesthesiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Anesthesia complications
Back & spine
Chronic pain
Facial & jaw pain
General pain
Head & facial pain
Headaches
Joint pain
Mental health
Muscle pain
Musculoskeletal pain
Nerve pain
Pelvic pain
Post-surgery recovery
Sedation & anesthesia
Spine pain
Ablation
Head & facial procedures
Implants & devices
Infusion therapies
Infusion therapy
Joint injections
Muscle injections
Nerve blocks
Nerve injections
Nerve procedures
Pain relief procedures
Regional anesthesia
Sedation
Sedation & anesthesia
Spine injections
Spine procedures
16 services · 16 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | Anaesthesia | 00731 |
16 | Less often than most peers in Anesthesiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Groenendyk is an anesthesiologist in Port Jefferson, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Anesthesiology”.
NPI registry
Dr. Groenendyk is listed at 75 N Country Rd, Port Jefferson, NY 11777. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (516) 382-7399. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Groenendyk's National Provider Identifier is 1083060917. 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
Dr. Groenendyk attended University of Tennessee, Hsc, College of Medicine, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
Dr. Groenendyk has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Groenendyk provides treatments such as anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope. 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 Dr. Groenendyk. If this is you, claiming it is free.
Guide.md
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