David Paul Arnstein, MD
Otolaryngology Physician · Los Gatos, CA
David Paul Arnstein, MD is an otolaryngology physician with a practice address in Los Gatos, California, and NPI 1801898796, issued on Aug 11, 2005. Check the license (California G56517, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Paul Arnstein
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- G56517 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15861 Winchester Blvd, Los Gatos, CA 95030
- Phone
- (408) 395-6121
- Enumerated
- Aug 11, 2005
- Record last updated
- Apr 29, 2024
- Fax
- (408) 395-6127
- Medicaid ID
- 00G565171 CA
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 1,212 in California → Look up another NPI →
Also registered at 15861 Winchester Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Harsha JohnAudiologist1285033936
- Rom Karin, MDOtolaryngology Physician1871595223
- William Lewis, MDOtolaryngology Physician1871585059
Verify David Paul Arnstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G56517Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average otolaryngology physician in 2024
99 Medicare Part D claims for 39 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D.
Most prescribed
- Azelastine Hcl25 claims
- Omeprazole18 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: $29.70
2 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 6,429 providers of this specialty with any payment received $1,922.50 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.
David Paul Arnstein among 1,212 otolaryngology physician records in California
David Paul Arnstein, MD is one of 1,212 otolaryngology physician records with a practice address in California. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 67% of these records are
- Record last updated2024 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in California
There are 1,212 otolaryngology physician records in California.
All 1,212 in California → Every provider in Los Gatos → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Rom Karin, MDLos Gatos, CA 950301871595223
- William Lewis, MDLos Gatos, CA 950301871585059
- Philip Ho, M.D.Los Gatos, CA 950321760579718
- George Shoptaw, M.D.Los Gatos, CA 950321043243058
- Todd Dray, MDSanta Clara, CA 950511083791917
- Michael Friduss, MDSanta Clara, CA 950511265519193
- J. Richard Gaskill, MDSanta Clara, CA 950511053498998
- Richard Gunsalus, MDSanta Clara, CA 950511700963659
Common questions
What is David Paul Arnstein, MD's NPI number?
David Paul Arnstein, MD's National Provider Identifier (NPI) is 1801898796, issued on Aug 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David Paul Arnstein, MD located?
The NPPES record lists a practice address at 15861 Winchester Blvd, Los Gatos, CA, 95030. Phone: (408) 395-6121. Providers update this record themselves, so call before visiting.
How can I verify David Paul Arnstein, MD's license?
NPPES lists California license number G56517, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Paul Arnstein, MD prescribe under Medicare Part D?
In 2024, David Paul Arnstein, MD had 99 Medicare Part D claims for 39 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.