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DR. RAYMOND ANYTHONY DIAZ MD
NPI 1346250024
Internal Medicine - Gastroenterology in Great Neck, NY

Active since August 08, 2006PECOS EnrolledAccepts Medicare Assignment
307 E SHORE RD, 2ND FLOOR, GREAT NECK, NY 11023(516) 233-2838(718) 425-8934 Get Directions Write a Review

NPPES record last updated: February 15, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Raymond Anythony Diaz Md NPPES

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

DR. RAYMOND ANYTHONY DIAZ MD (NPI 1346250024) is an individual gastroenterology provider in Great Neck, New York, licensed in New York (213794) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1993).

NPPES Registry Identity

NPI1346250024
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. RAYMOND ANYTHONY DIAZCredential: MD
Location Address307 E SHORE RD, 2ND FLOORGreat Neck, NY 11023-2420
Mailing Address307 E Shore Rd, 2nd FloorGreat Neck, NY 11023-2420 · (516) 233-2838 · Fax (718) 425-8934
Phone(516) 233-2838
Fax(718) 425-8934
Sole ProprietorYes
Medical School CMSOtherGraduated 1993
Enumeration DateAugust 8, 2006
Last NPPES UpdateFebruary 15, 2013
✔ NPI 1346250024 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in NY · 213794
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
307 E SHORE RD, Great Neck, NY 11023
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Other Identifiers 1

Medicare PINA100057264NY

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. Raymond Anythony Diaz 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 ID6002903408
PECOS Enrollment IDI20100330001144
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

7

Medicare enrollment records show Raymond Diaz reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Essen Medical Associates,pc
6.5 mi
Legal Medicine
19544 WOODHULL AVE
Jamaica, NY 11423
  • Reassigned Medicare billing, New York enrollment
  • 1,393 clinicians in this Medicare group
NPI 1700023926 (718) 740-3500
Ae & Ly Medical Associates PLLC
6.6 mi
Gastroenterology
13633 37TH AVE FL 7
Flushing, NY 11354
  • Reassigned Medicare billing, New York enrollment
  • 8 clinicians in this Medicare group
NPI 1912060229 (718) 321-3262
Bronx Medical Practice P.C.
7.4 mi
Internal Medicine
2626 HALPERIN AVE
Bronx, NY 10461
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Bronx Medical Practice PC
  • 1,013 clinicians in this Medicare group
NPI 1356726087 (646) 340-1309
Uptown Healthcare Management, Inc.
9.3 mi
Ambulatory Surgical
930 E TREMONT AVE
Bronx, NY 10460
  • Reassigned Medicare billing, New York enrollment
  • Also billed through NPI 1336173194 (New York)
  • 15 clinicians in this Medicare group
NPI 1669644837 (718) 764-1633
Chinatown True Care Medical PLLC
16 mi
Internal Medicine
139 CENTRE ST STE 711
New York, NY 10013
  • Reassigned Medicare billing, New York enrollment
  • 284 clinicians in this Medicare group
NPI 1912567884 (631) 220-1581
Digestive Disease Care, PC
33 mi
Gastroenterology
235 N BELLE MEAD RD
East Setauket, NY 11733
  • Reassigned Medicare billing, New York enrollment
  • 60 clinicians in this Medicare group
NPI 1184871774 (631) 450-1500
Chs Neuroscience Group
299 mi
Neurology
565 ABBOTT RD
Buffalo, NY 14220
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Mercy Hospital Of Buffalo
  • 499 clinicians in this Medicare group
NPI 1972883304 (716) 826-7000

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 9

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.

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.
71 services44 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
60 services57 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
53 services32 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.
37 services30 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
32 services32 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
27 services27 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11023 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

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

307 LONG ISLAND MEDICAL PC
Anesthesiology
307 E SHORE RD, 2ND FLOOR
GREAT NECK, NY 11023
Nassau County (516) 487-5858
VISTA MEDICAL P.C.
Anesthesiology
307 E SHORE RD, 2ND FLOOR
GREAT NECK, NY 11023
Nassau County (516) 487-5858
RAYMOND A DIAZ M D PC
Internal Medicine (Gastroenterology)
307 E SHORE RD, 2ND FLOOR
GREAT NECK, NY 11023
Nassau County (516) 233-2838

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 Raymond Diaz's NPI number?

The NPI number for Raymond Diaz is 1346250024. It was assigned to this individual provider in the NPPES registry on August 8, 2006.

Where is Raymond Diaz located?

Raymond Diaz practices at 307 E Shore Rd 2nd Floor, Great Neck, NY 11023. The listed phone number is (516) 233-2838.

What is Raymond Diaz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Raymond Diaz enrolled in Medicare?

Yes. Raymond Diaz 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 Raymond Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Raymond Diaz reassigns Medicare benefits to 7 organizations: Essen Medical Associates,pc (Jamaica, NY), Ae & Ly Medical Associates PLLC (Flushing, NY), Bronx Medical Practice P.C. (Bronx, NY), Uptown Healthcare Management, Inc. (Bronx, NY), Chinatown True Care Medical PLLC (New York, NY) and 2 more organizations, listed in the Medicare section above. 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 Raymond Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Raymond Diaz was last updated on February 15, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.