Robert Dy, D.O.
NPI 1851397210 · Gastroenterology Physician · Mount Vernon, WA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Dy, D.O. is a Gastroenterology Physician provider in Mount Vernon, WA (NPI 1851397210).
Provider details
- NPI number
- 1851397210
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- OP00001859 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
324 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 77 | $58 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 59 | $166 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 55 | $130 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 30 | $171 |
| Biopsy of Small Bowel (except Ileum) Using an Endoscope44361 | 25 | $93 |
| Balloon Dilation of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope, Less Than 3.0 Cm |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 29 | 28 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 23 | 23 |
| Omeprazole | 21 | 21 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-21
- Last updated
- 2024-12-09
- Certified
- 2024-12-09
Frequently asked questions
- What is Robert Dy's NPI number?
- Robert Dy's National Provider Identifier (NPI) is 1851397210, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Dy's specialty?
- Robert Dy is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Dy located?
- Robert Dy's practice location on file with NPPES is 211 S 13th St, Mount Vernon, WA 98274-4107.
- What is Robert Dy's phone number?
- The practice phone number listed in the NPPES registry for Robert Dy is (360) 814-6113.
- Does Robert Dy accept Medicare?
- Robert Dy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Dy's NPI active?
- Yes — Robert Dy's NPI (1851397210) is active in the NPPES registry as of the last update on 2024-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.