Warren Russell Taff, MD
Psychiatry Physician · Newport Beach, CA
Warren Russell Taff, MD is a psychiatry physician with a practice address in Newport Beach, California, and NPI 1861613481, issued on May 1, 2007. Check the license (California A29577, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Warren Russell Taff
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A29577 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2811 Villa Way, Newport Beach, CA 92663
- Phone
- (949) 673-6696
- Enumerated
- May 1, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090820000580); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify Warren Russell Taff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A29577Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average psychiatry physician in 2024
34 Medicare Part D claims for 11 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Zolpidem Tartrate15 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.
Warren Russell Taff among 8,673 psychiatry physician records in California
Warren Russell Taff, MD 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 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1974 · median 2005 among the 3,295 with a school on file
- 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).
59 psychiatry physician records list a practice address in Newport Beach
They are 59 of the 4,414 NPPES records with a practice address in Newport Beach, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Newport Beach → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Vicki Berkus, M.D.,PH.D,CEDSNewport Beach, CA 926631124054440
- Eugene Dorsey, MDNewport Beach, CA 926631801987300
- Stefani Lafrenierre, MDNewport Beach, CA 926631750645743
- Nisha Ramsinghani, D.O.Newport Beach, CA 926631033485222
- Matthew Reed, M.D., M.S.P.H.Newport Beach, CA 926631225356678
- Erica Welch, PMHNPNewport Beach, CA 926631568296135
- Elizabeth Whitham, MDNewport Beach, CA 926631417480625
- Robert Hampton, M.D.Newport Beach, CA 926611922271709
Common questions
What is Warren Russell Taff, MD's NPI number?
Warren Russell Taff, MD's National Provider Identifier (NPI) is 1861613481, issued on May 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Warren Russell Taff, MD located?
The NPPES record lists a practice address at 2811 Villa Way, Newport Beach, CA, 92663. Phone: (949) 673-6696. Providers update this record themselves, so call before visiting.
How can I verify Warren Russell Taff, MD's license?
NPPES lists California license number A29577, 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 Warren Russell Taff, MD prescribe under Medicare Part D?
In 2024, Warren Russell Taff, MD had 34 Medicare Part D claims for 11 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.