Dennis Alfaro, M.D.
Emergency Medicine Physician · Pleasanton, CA
Dennis Alfaro, M.D. is an emergency medicine physician with a practice address in Pleasanton, California, and NPI 1407847718, issued on Nov 4, 2005. Check the license (California G67215, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dennis Alfaro
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- G67215 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5555 W Las Positas Blvd, Pleasanton, CA 94588
- Phone
- (209) 342-2300
- Enumerated
- Nov 4, 2005
- Entity
- Type 1 · individual
Also registered at 5555 W Las Positas Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley Altman, MDDiagnostic Radiology Physician1649697947
- Joshua AshfordEmergency Registered Nurse1972458941
- Abinav Baweja, MDMedical Oncology Physician1770961575
- Brooke BettsPharmacist1962178491
- Myrna Castelazo, M.D.Diagnostic Radiology Physician1407290513
- Ryan Cates, PA-CMedical Physician Assistant1053782920
Verify Dennis Alfaro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G67215Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
58% more Medicare Part D claims than the average emergency medicine physician in 2024
560 Medicare Part D claims for 267 beneficiaries, against an average of 355 among the 49,029 providers of this specialty who prescribed in Part D. 87 claims were for opioids.
Most prescribed
- Ondansetron Odt75 claims
- Hydrocodone-Acetaminophen55 claims
- Cephalexin46 claims
- Prednisone42 claims
- Albuterol Sulfate Hfa40 claims
- Dicyclomine Hcl26 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.
26 emergency medicine physician records list a Pleasanton practice address
They are 26 of the 2,213 NPPES records with a Pleasanton practice address, and 7,133 emergency medicine physician records in California.
All 26 in Pleasanton → All 7,133 in California → Every provider in Pleasanton →
Other emergency medicine physician records in California
- Cooper Aakhus, MDStanford, CA1194351007
- Pyra Aarden, MDMartinez, CA1417058199
- Neal Aaron, D.O.Encinitas, CA1114283520
- Eric AaserudeWalnut Creek, CA1811491194
- Nader Abas, MDBarstow, CA1346288305
- Michael Abbo, MDNovato, CA1205819042
- Daniel Abbott, MDFullerton, CA1518907864
- Paul-Andre Abboud, M.D.Oakland, CA1710065503
- Mostafa Abdel-Hamid, MDStanford, CA1457918740
- Ashraf Abdel-KerimChino, CA1396961538
Common questions
What is Dennis Alfaro, M.D.'s NPI number?
Dennis Alfaro, M.D.'s National Provider Identifier (NPI) is 1407847718, issued on Nov 4, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Alfaro, M.D. located?
The NPPES record lists a practice address at 5555 W Las Positas Blvd, Pleasanton, CA, 94588. Phone: (209) 342-2300. Providers update this record themselves, so call before visiting.
How can I verify Dennis Alfaro, M.D.'s license?
NPPES lists California license number G67215, 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 Dennis Alfaro, M.D. prescribe under Medicare Part D?
In 2024, Dennis Alfaro, M.D. had 560 Medicare Part D claims for 267 beneficiaries; the average among emergency medicine physician prescribers was 355. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.