Bruce Greenwald, M.D.
NPI 1801842018 · Gastroenterology Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bruce Greenwald, M.D. is a Gastroenterology Physician provider in Baltimore, MD (NPI 1801842018).
Provider details
- NPI number
- 1801842018
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D39961 (MD)
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
401 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 | 102 | $76 |
| Destruction of Polyp Or Growth of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43270 | 56 | $218 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 37 | $133 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 34 | $229 |
| Balloon Dilation of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope, Less Than 3.0 Cm43249 | 27 | $139 |
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 | 114 | 46 |
| Pantoprazole Sodium | 110 | 44 |
| Famotidine | 73 | 24 |
| Sucralfate | 47 | 26 |
| Esomeprazole Magnesium | 45 | 14 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 24 | — |
| Linaclotidebrand: Linzess | 13 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,846 across 8 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
Registry dates
- Enumerated
- 2006-05-26
- Last updated
- 2010-11-15
Frequently asked questions
- What is Bruce Greenwald's NPI number?
- Bruce Greenwald's National Provider Identifier (NPI) is 1801842018, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bruce Greenwald's specialty?
- Bruce Greenwald is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Bruce Greenwald located?
- Bruce Greenwald's practice location on file with NPPES is 22 S Greene St, Baltimore, MD 21201-1544.
- What is Bruce Greenwald's phone number?
- The practice phone number listed in the NPPES registry for Bruce Greenwald is (410) 328-8731.
- Does Bruce Greenwald accept Medicare?
- Bruce Greenwald is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bruce Greenwald's NPI active?
- Yes — Bruce Greenwald's NPI (1801842018) is active in the NPPES registry as of the last update on 2010-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.