Mark Rosenblatt, M.D.
NPI 1851375455 · Gastroenterology Physician · Wailuku, HI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Rosenblatt, M.D. is a Gastroenterology Physician provider in Wailuku, HI (NPI 1851375455).
Provider details
- NPI number
- 1851375455
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 42702 (CO)
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
20 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
506 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) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 118 | $79 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 78 | $150 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 48 | $177 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 40 | $234 |
| Injection Beneath Lining of Large Bowel Using a Flexible Endoscope45381 | 28 | $15 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 106 | 105 |
| Pantoprazole Sodium | 94 | 43 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 85 | 82 |
| Peg 3350/Sod Sulf,chlr/Pot/Magbrand: Suflave | 84 | 84 |
| Omeprazole | 70 | 25 |
| Linaclotidebrand: Linzess | 28 | — |
| Sod Sulf/Pot Chloride/Mag Sulf |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$151 across 2 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)
- 221 Mahalani StWailuku, HI 96793-2526Phone: (808) 244-9056Fax: (855) 827-2321
Registry dates
- Enumerated
- 2005-12-06
- Last updated
- 2025-05-19
- Certified
- 2025-05-19
Frequently asked questions
- What is Mark Rosenblatt's NPI number?
- Mark Rosenblatt's National Provider Identifier (NPI) is 1851375455, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Rosenblatt's specialty?
- Mark Rosenblatt is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Rosenblatt located?
- Mark Rosenblatt's practice location on file with NPPES is 85 Maui Lani Pkwy, Wailuku, HI 96793-2416.
- What is Mark Rosenblatt's phone number?
- The practice phone number listed in the NPPES registry for Mark Rosenblatt is (808) 442-5700.
- Does Mark Rosenblatt accept Medicare?
- Mark Rosenblatt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Rosenblatt's NPI active?
- Yes — Mark Rosenblatt's NPI (1851375455) is active in the NPPES registry as of the last update on 2025-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.