Joseph E. Hannan, M.D.
Psychiatry Physician · Santa Rosa, CA
Joseph E. Hannan, M.D. is a psychiatry physician with a practice address in Santa Rosa, California, and NPI 1417022377, issued on Nov 22, 2006. Check the license (California C-35267, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph E. Hannan
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- C-35267 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2235 Challenger Way, Santa Rosa, CA 95407
- Phone
- (707) 528-7262
- Enumerated
- Nov 22, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 576-1964
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 2235 Challenger Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathleen BeardPsychiatric/Mental Health Registered Nurse1952747164
- Isabel GrayDay Training/Habilitation Specialist1295378511
- Joann Hawk, PH.D.Psychologist1770593568
- Shiloh JayneMarriage & Family Therapist1518323831
- Eunjie Klegar, M.D.Psychiatry Physician1548568413
- Patrick McCullyMarriage & Family Therapist1356570337
Verify Joseph E. Hannan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C-35267Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average psychiatry physician in 2024
292 Medicare Part D claims for 34 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Lorazepam39 claims
- Trazodone Hcl34 claims
- Bupropion Hcl Sr33 claims
- Clonazepam17 claims
- Escitalopram Oxalate17 claims
- Lamotrigine17 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.
Joseph E. Hannan among 8,673 psychiatry physician records in California
Joseph E. Hannan, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
73 psychiatry physician records list a practice address in Santa Rosa
They are 73 of the 6,884 NPPES records with a practice address in Santa Rosa, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Santa Rosa → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Elizabeth Hegarty, MDSanta Rosa, CA 954071740405026
- Prabpreet Kaur, MDSanta Rosa, CA 954071689181885
- Eunjie Klegar, M.D.Santa Rosa, CA 954071548568413
- Lisa Moran, M.D.Santa Rosa, CA 954071154399723
- Cynthia Pilgrim, M.D.Santa Rosa, CA 954071851554588
- Martin Bauman, MDSanta Rosa, CA 954051285766527
- David Campell, M.D.Santa Rosa, CA 954051306880463
- Benjamin Chaves, M.D.Santa Rosa, CA 954051497816730
Common questions
What is Joseph E. Hannan, M.D.'s NPI number?
Joseph E. Hannan, M.D.'s National Provider Identifier (NPI) is 1417022377, issued on Nov 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph E. Hannan, M.D. located?
The NPPES record lists a practice address at 2235 Challenger Way, Santa Rosa, CA, 95407. Phone: (707) 528-7262. Providers update this record themselves, so call before visiting.
How can I verify Joseph E. Hannan, M.D.'s license?
NPPES lists California license number C-35267, 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 Joseph E. Hannan, M.D. prescribe under Medicare Part D?
In 2024, Joseph E. Hannan, M.D. had 292 Medicare Part D claims for 34 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.