Daniel Zandman, M.D.
NPI 1780842955 · Gastroenterology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Zandman, M.D. is a Gastroenterology Physician provider in Boston, MA (NPI 1780842955).
Provider details
- NPI number
- 1780842955
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 254475 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 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
851 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 166 | $252 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 110 | $139 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 75 | $82 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 70 | $83 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 64 | $115 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 272 | 77 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 272 | 264 |
| Mesalamine | 51 | 15 |
| Pantoprazole Sodium | 39 | 12 |
| Balsalazide Disodium | 28 | — |
| Adalimumabbrand: Humira(cf) Pen | 28 | — |
| Azathioprine | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$36 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)
- 300 Mount Auburn St Ste 405Cambridge, MA 02138-5665Phone: (617) 498-9550
Registry dates
- Enumerated
- 2008-05-23
- Last updated
- 2021-11-04
- Certified
- 2021-11-04
Frequently asked questions
- What is Daniel Zandman's NPI number?
- Daniel Zandman's National Provider Identifier (NPI) is 1780842955, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Zandman's specialty?
- Daniel Zandman is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Zandman located?
- Daniel Zandman's practice location on file with NPPES is 330 Brookline Ave, Boston, MA 02215-5400.
- What is Daniel Zandman's phone number?
- The practice phone number listed in the NPPES registry for Daniel Zandman is (617) 667-7000.
- Does Daniel Zandman accept Medicare?
- Daniel Zandman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Zandman's NPI active?
- Yes — Daniel Zandman's NPI (1780842955) is active in the NPPES registry as of the last update on 2021-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.