David Katzen, M.D.
NPI 1093711830 · Allergy Physician · Warwick, RI
David Katzen, M.D. is a Allergy Physician provider in Warwick, RI (NPI 1093711830).
Provider details
- NPI number
- 1093711830
- Entity type
- Individual
- Primary specialty
- Allergy PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD06041 (RI)
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
3,919 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) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 2,217 | $4 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 648 | $15 |
| Test for Allergy Using Allergenic Extract Injected Into Skin95024 | 583 | $8 |
| Professional Service for Multiple Injections of Allergen95117 | 185 | $13 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 157 | $92 |
| Test to Measure the Level of Nitric Oxide Gas95012 | 47 | $19 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 227 | 70 |
| Montelukast Sodium | 199 | 48 |
| Azelastine Hcl | 120 | 47 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 92 | 37 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 79 | 11 |
| Ipratropium Bromide | 52 | 22 |
| Albuterol Sulfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$711 across 34 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
- 2005-06-27
- Last updated
- 2007-07-08
Frequently asked questions
- What is David Katzen's NPI number?
- David Katzen's National Provider Identifier (NPI) is 1093711830, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Katzen's specialty?
- David Katzen is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).
- Where is David Katzen located?
- David Katzen's practice location on file with NPPES is 400 Bald Hill Rd, Warwick, RI 02886-6100.
- What is David Katzen's phone number?
- The practice phone number listed in the NPPES registry for David Katzen is (401) 739-5901.
- Is David Katzen's NPI active?
- Yes — David Katzen's NPI (1093711830) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.