Physician Profile
Unclaimed ProfileAbout KATZEN
David Robert Katzen, M.D. is a healthcare provider in Warwick, RI specializing in allergy. According to Medicare claims data, David cared for 282 Medicare patients across 3,919 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (401) 739-5901
- Email not available
Practice Locations
400 BALD HILL RD STE 527
Warwick, RI 02886
Procedures Most Often Billed to Medicare
3,919 services · 282 patients · 9 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Test for allergy using allergenic extract | Treatment | 95004 |
2,217 |
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
648 |
| Test for allergy using allergenic extract injected into skin | Treatment | 95024 |
583 |
| Professional service for multiple injections of allergen | Treatment | 95117 |
185 |
| Test to measure the level of nitric oxide gas | Treatment | 95012 |
47 |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
32 |
| Test to measure expiratory airflow and volume changes before and after medication administration | Treatment | 94060 |
24 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
157 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
26 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Also performs Test for allergy using allergenic extract 5
Providers in RI who bill this service to Medicare most often.
Common questions
What is Dr. Katzen's specialty?
Dr. Katzen is an allergy in Warwick, RI. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Allergy”.
NPI registry
Where can I find Dr. Katzen?
Dr. Katzen is listed at 400 BALD HILL RD STE 527, Warwick, RI 02886. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Katzen?
The number on file is (401) 739-5901. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Katzen's NPI number?
Dr. Katzen's National Provider Identifier is 1093711830. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How long has Dr. Katzen been practicing?
Dr. Katzen has 21+ years experience. Registered with an NPI since 2005. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What is Dr. Katzen known for?
According to Medicare billing data, Dr. Katzen provides treatments such as test for allergy using allergenic extract and professional service for preparation and provision of 1 or more antigens, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Katzen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Katzen. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.