Ray Dong
NPI 1679950620 · Gastroenterology Physician · New York, NY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ray Dong is a Gastroenterology Physician provider in New York, NY (NPI 1679950620).
Provider details
- NPI number
- 1679950620
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- A143843 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
106 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 45 | $60 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 18 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 17 | $137 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 13 | $91 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 13 | $178 |
Typical Medicare-allowed amounts for these services range $60–$178 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 116 | 67 |
| Famotidine | 52 | 20 |
| Lactulose | 52 | 52 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 51 | 48 |
| Linaclotidebrand: Linzess | 46 | 19 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 18 | 18 |
| Hydrocortisone | 17 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$802 across 20 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1200 N State Street, Ct-A7dLos Angeles, CA 90033Phone: (323) 226-7556Fax: (323) 226-2657
Registry dates
- Enumerated
- 2015-04-29
- Last updated
- 2020-03-24
- Certified
- 2020-03-24
Frequently asked questions
- What is Ray Dong's NPI number?
- Ray Dong's National Provider Identifier (NPI) is 1679950620, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ray Dong's specialty?
- Ray Dong is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Ray Dong located?
- Ray Dong's practice location on file with NPPES is 10 Union Sq E # 2g, New York, NY 10003-3314.
- What is Ray Dong's phone number?
- The practice phone number listed in the NPPES registry for Ray Dong is (212) 844-6195.
- Does Ray Dong accept Medicare?
- Ray Dong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ray Dong's NPI active?
- Yes — Ray Dong's NPI (1679950620) is active in the NPPES registry as of the last update on 2020-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.