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RAY DONG
NPI 1679950620
Internal Medicine - Gastroenterology in New York, NY

Active since April 29, 2015PECOS EnrolledAccepts Medicare Assignment
10 UNION SQ E # 2G, NEW YORK, NY 10003(212) 844-6195(323) 226-2657 Get Directions Write a Review

NPPES record last updated: March 24, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ray Dong NPPES

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

RAY DONG (NPI 1679950620) is an individual gastroenterology provider in New York, New York, licensed in New York (293214) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of Eastern Virginia Medical School (2015).

NPPES Registry Identity

NPI1679950620
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameRAY DONG
Location Address10 UNION SQ E # 2GNew York, NY 10003-3314
Mailing Address10 Union Sq E # 2gNew York, NY 10003-3314 · (212) 844-6195 · Fax (323) 226-2657
Phone(212) 844-6195
Fax(323) 226-2657
Sole ProprietorYes
Medical School CMSEastern Virginia Medical SchoolGraduated 2015
Enumeration DateApril 29, 2015
Last NPPES UpdateMarch 24, 2020
NPPES CertifiedMarch 24, 2020
✔ NPI 1679950620 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in NY · 293214
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.
Also ListedInternal MedicineTaxonomy 207R00000X · License A143843 (CA)
10 UNION SQ E # 2G, New York, NY 10003
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Secondary Practice Location 1

Location 11200 N State Street, CT-A7DLos Angeles, CA 90033 · Phone (323) 226-7556 · Fax (323) 226-2657

Other Identifiers 1

MedicaidRD3232267556CA

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

Ray Dong 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 ID9931495686
PECOS Enrollment IDI20210611000918
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

3

Medicare enrollment records show Ray Dong reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

King-Chen Hon MD PC
8.5 mi
Specialist
13511 40TH RD, SUITE #3A
Flushing, NY 11354
  • Reassigned Medicare billing, New York enrollment
  • 2 clinicians in this Medicare group
NPI 1093080996 (718) 359-2827
Synergy Endoscopy Medicine PLLC
8.7 mi
Specialist
4161 KISSENA BLVD STE D
Flushing, NY 11355
  • Reassigned Medicare billing, New York enrollment
  • 9 clinicians in this Medicare group
NPI 1003660499 (718) 359-2827
Synergy Gastroenterology PC
8.7 mi
Gastroenterology
4161 KISSENA BLVD STE D
Flushing, NY 11355
  • Reassigned Medicare billing, New York enrollment
NPI 1154172781 (718) 359-2827

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 5

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.

Telephone medical discussion with physician, 5-10 minutes 99441
A telephone medical discussion with a physician is a brief, 5-10 minute call where you can discuss your health concerns. It's a convenient way to receive medical advice without needing to visit a clinic. It's important to prepare questions in advance to make the most of this time.
45 services45 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.
18 services15 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.
17 services16 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.
13 services13 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.
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10003 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
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
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.

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 Ray Dong's NPI number?

The NPI number for Ray Dong is 1679950620. It was assigned to this individual provider in the NPPES registry on April 29, 2015.

Where is Ray Dong located?

Ray Dong practices at 10 Union Sq E # 2G, New York, NY 10003. The listed phone number is (212) 844-6195.

What is Ray Dong's specialty?

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

Is Ray Dong enrolled in Medicare?

Yes. Ray Dong 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 Ray Dong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ray Dong reassigns Medicare benefits to 3 organizations: King-Chen Hon MD PC (Flushing, NY), Synergy Endoscopy Medicine PLLC (Flushing, NY) and Synergy Gastroenterology PC (Flushing, NY). 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 Ray Dong'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 Ray Dong was last updated on March 24, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.