David Robert Katzen, M.D.
Allergy Physician · Warwick, RI
David Robert Katzen, M.D. is an allergy physician with a practice address in Warwick, Rhode Island, and NPI 1093711830, issued on Jun 27, 2005. Check the license (Rhode Island MD06041, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- David Robert Katzen
- Credential
- M.D.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- MD06041 RI
Self-reported in NPPES; status is on the state search - Practice location
- 400 Bald Hill RD, Warwick, RI 02886
- Phone
- (401) 739-5901
- Enumerated
- Jun 27, 2005
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (401) 739-8170
- Medicaid ID
- 9000465 RI
- Entity
- Type 1 · individual
4 nearest allergy physician records → All 5 in Rhode Island → Look up another NPI →
Also registered at 400 Bald Hill RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Bessette, LMHCMental Health Counselor1417108523
- Joseph BlanchardHearing Instrument Specialist1548646045
- Tara Bogs, PH.D.Clinical Psychologist1043385081
- Kalina Brabeck, PH.D.Counseling Psychologist1417109232
- Amber Champagne, PSYDClinical Psychologist1073245940
- Irene Chliwner, MDInternal Medicine Physician1588745491
Verify David Robert Katzen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersRhode Island Board of Medical Licensure and Discipline
Search for license MD06041Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% more Medicare Part D claims than the average allergy physician in 2024
1,369 Medicare Part D claims for 236 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D.
Most prescribed
- Fluticasone Propionate227 claims
- Montelukast Sodium199 claims
- Azelastine Hcl120 claims
- Albuterol Sulfate Hfa92 claims
- Trelegy Ellipta79 claims
- Ipratropium Bromide52 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $710.58
34 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 502 providers of this specialty with any payment received $9,080.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Allergy Physician providers in Rhode Island
There are 5 allergy physician records in Rhode Island.
All 5 in Rhode Island → Every provider in Warwick → Allergy Physician nationwide →
The 4 allergy physician records with the nearest ZIP codes
- Mansi James, DOProvidence, RI 029041982099834
- Mary Ann Passero, M.D.Providence, RI 029051033130224
- John Zwetchkenbaum, M.D.Providence, RI 029061124027552
- Anthony Ricci, M.D.East Greenwich, RI 028181275646440
Common questions
What is David Robert Katzen, M.D.'s NPI number?
David Robert Katzen, M.D.'s National Provider Identifier (NPI) is 1093711830, issued on Jun 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David Robert Katzen, M.D. located?
The NPPES record lists a practice address at 400 Bald Hill RD, Warwick, RI, 02886. Phone: (401) 739-5901. Providers update this record themselves, so call before visiting.
How can I verify David Robert Katzen, M.D.'s license?
NPPES lists Rhode Island license number MD06041, as entered by the provider. Search the Rhode Island Board of Medical Licensure and Discipline at https://healthri.mylicense.com/Verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Robert Katzen, M.D. prescribe under Medicare Part D?
In 2024, David Robert Katzen, M.D. had 1,369 Medicare Part D claims for 236 beneficiaries; the average among allergy physician prescribers was 750. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.