DR. GREGORY TIESI MD
NPI 1942464003
Surgery - Surgical Oncology in Neptune, NJ

Q: What is Gregory Tiesi's NPI number?

The NPI number for Gregory Tiesi is 1942464003. It was assigned to this individual provider in the NPPES registry on July 17, 2008.

Q: What is Gregory Tiesi's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Tiesi was last updated on July 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 17, 2008PECOS EnrolledAccepts Medicare Assignment

19 DAVIS AVE FL 2, NEPTUNE, NJ 07753(732) 776-4770 Get Directions Write a Review

NPPES record last updated: July 29, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Gregory Tiesi Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY TIESI MD (NPI 1942464003) is an individual surgical oncology provider in Neptune, New Jersey, licensed in New Jersey (25MA09135400) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS, is affiliated with Riverview Medical Center, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1942464003

Entity TypeIndividualMale

Primary Taxonomy2086X0206X

Provider Legal NameDR. GREGORY TIESICredential: MD

Location Address19 DAVIS AVE FL 2Neptune, NJ 07753-4488

Mailing Address19 Davis Ave Fl 2Neptune, NJ 07753-4488 · (732) 776-4770

Phone(732) 776-4770

Sole ProprietorNo

Medical School CMSOtherGraduated 2007

Enumeration DateJuly 17, 2008

Last NPPES UpdateJuly 29, 2025

NPPES CertifiedJuly 29, 2025

✔ NPI 1942464003 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Surgical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2086X0206X

License✔ Licensed in NJ · 25MA09135400

Definition

A surgical oncologist is a well-qualified surgeon who has obtained additional training and experience in the multidisciplinary approach to the prevention, diagnosis, treatment, and rehabilitation of cancer patients, and devotes a major portion of his or her professional practice to these activities and cancer research.

19 DAVIS AVE FL 2, Neptune, NJ 07753

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, AmeriHealth Caritas Next and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gregory Tiesi Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7315239811

PECOS Enrollment IDI20220808003514

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Gregory Tiesi reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hackensack Meridian Health Medical Group - Complex Care PC

9.2 mi

Internal Medicine

331 NEWMAN SPRINGS RD STE 220
Red Bank, NJ 07701

Reassigned Medicare billing, New Jersey enrollment
306 clinicians in this Medicare group

NPI 1154379626 (732) 807-0800

Hackensack Meridian Health Medical Group - Specialty Care PC

9.2 mi

Surgical Critical Care

331 NEWMAN SPRINGS RD STE 220
Red Bank, NJ 07701

Reassigned Medicare billing, New Jersey enrollment
2,844 clinicians in this Medicare group

NPI 1215989249 (732) 807-0800

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 14

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

170 services49 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

81 services57 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

69 services69 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

65 services56 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

63 services54 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

47 services26 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

34 services34 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

30 services27 patients

Insertion of central venous tube with port (5 years or older) 36561

A central venous tube with port is a small, flexible tube inserted into a large vein, usually in the chest. It allows for easy administration of medication, fluids, or blood products over a long period. A port is attached under the skin for easy access. It's safe for individuals aged 5 and above.

21 services21 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

20 services20 patients

Fluoroscopic guidance for insertion or removal of central vein access device 77001

Fluoroscopic guidance for central vein access device insertion or removal is a procedure where a special X-ray, called a fluoroscope, is used to help accurately place or remove a device in a central vein. This device aids in delivering medications or collecting blood samples.

20 services20 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

18 services12 patients

Diagnostic exam of abdomen using an endoscope 49320

A diagnostic exam of the abdomen using an endoscope involves a thin, flexible tube with a light and camera. It's inserted through a small incision to view the digestive tract. This helps identify any issues in the stomach or intestines. It's a safe, minimally invasive procedure.

13 services13 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Riverview Medical Center

Acute Care Hospitals · Red Bank, NJ

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310034

LocationOne Riverview PlazaRed Bank, NJ 07701 · Monmouth County

Emergency services Birthing friendly

Ocean Medical Center

Acute Care Hospitals · Brick, NJ

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number310052

Location425 Jack Martin BlvdBrick, NJ 08724 · Ocean County

Emergency services Birthing friendly

Jersey Shore University Medical Center

Acute Care Hospitals · Neptune, NJ

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310073

Location1945 State Route 33Neptune, NJ 07753 · Monmouth County

Emergency services Birthing friendly

Jfk Medical Center

Acute Care Hospitals · Edison, NJ

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310108

Location65 James StreetEdison, NJ 08820 · Middlesex County

Emergency services Birthing friendly

Southern Ocean Medical Center

Acute Care Hospitals · Manahawkin, NJ

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310113

Location1140 Rt 72 WManahawkin, NJ 08050 · Ocean County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07753 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$185.05 typical visit price

range $61.59 – $185.05

Typical copayment $46.26 (range $15.39 – $46.26)

Most-billed visit code 99205

Established Patient

$76.45 typical visit price

range $20.08 – $150.98

Typical copayment $19.11 (range $5.02 – $37.74)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier12 claims12 services$89.64 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

1 supplier12 claims12 services$34.91 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KELLY WEST FITZPATRICK MD

Internal Medicine (Medical Oncology)

19 DAVIS AVE FL 2
NEPTUNE, NJ 07753

Monmouth County (732) 367-1535

MARY LYNN BRESLIN A-GNP-C

Nurse Practitioner

19 DAVIS AVE FL 2
NEPTUNE, NJ 07753

Monmouth County (732) 528-0760

MISS RUCHI D BHATT D.O.

Internal Medicine (Hematology & Oncology)

19 DAVIS AVE FL 2
NEPTUNE, NJ 07753

Monmouth County (732) 528-0760

SARINA MARIE KEOGH PA-C

Physician Assistant

19 DAVIS AVE FL 2
NEPTUNE, NJ 07753

Monmouth County (732) 776-3690

DANIELLE ERIN LANN MD

Internal Medicine (Endocrinology, Diabetes & Metabolism)

19 DAVIS AVE FL 2
NEPTUNE, NJ 07753

Monmouth County (732) 776-4770

MR. JOSHUA C. BRAMSON MD

Internal Medicine (Hematology & Oncology)

19 DAVIS AVE FL 2
NEPTUNE CITY, NJ 07753

Monmouth County (732) 528-0760

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Tiesi's NPI number?

The NPI number for Gregory Tiesi is 1942464003. It was assigned to this individual provider in the NPPES registry on July 17, 2008.

Where is Gregory Tiesi located?

Gregory Tiesi practices at 19 Davis Ave Fl 2, Neptune, NJ 07753. The listed phone number is (732) 776-4770.

What is Gregory Tiesi's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.

Is Gregory Tiesi enrolled in Medicare?

Yes. Gregory Tiesi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Gregory Tiesi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Tiesi reassigns Medicare benefits to 2 organizations: Hackensack Meridian Health Medical Group - Complex Care PC (Red Bank, NJ) and Hackensack Meridian Health Medical Group - Specialty Care PC (Red Bank, NJ). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gregory Tiesi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Tiesi accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, AmeriHealth Caritas Next and Oscar Health list Gregory Tiesi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Gregory Tiesi affiliated with any hospitals?

According to CMS data, Gregory Tiesi is affiliated with Riverview Medical Center, Ocean Medical Center, Jersey Shore University Medical Center, Jfk Medical Center and Southern Ocean Medical Center.

When was this NPI record last updated?

The NPPES record for Gregory Tiesi was last updated on July 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.