Tina Nhatthi Tonnu, M.D.
Psychiatry Physician · Walnut Creek, CA
Tina Nhatthi Tonnu, M.D. is a psychiatry physician with a practice address in Walnut Creek, California, and NPI 1790759827, issued on Feb 15, 2006. Check the license (California A88767, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tina Nhatthi Tonnu
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A88767 CA
Self-reported in NPPES; status is on the state search - Practice location
- 710 S Broadway, Walnut Creek, CA 94596
- Phone
- (925) 295-5210
- Enumerated
- Feb 15, 2006
- Record last updated
- Dec 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (925) 295-5226
- Medicare enrollment
- Enrolled (PECOS I20081125000381); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 710 S Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julia Avedisian-Aguilar, MFTMarriage & Family Therapist1972614162
- Nardine Azab, MFTMental Health Counselor1417120106
- Jennifer Barkin, PSY.D.Clinical Psychologist1043476468
- Jessica Bergstrom, PSY.D.Clinical Psychologist1508333618
- Isabella BluminBehavior Technician1932716115
- Vince Brim, PSY.D.Clinical Psychologist1932378965
Verify Tina Nhatthi Tonnu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A88767Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% more Medicare Part D claims than the average psychiatry physician in 2024
1,288 Medicare Part D claims for 208 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
- Quetiapine Fumarate134 claims
- Sertraline Hcl128 claims
- Lorazepam90 claims
- Gabapentin89 claims
- Fluoxetine Hcl58 claims
- Lamotrigine58 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.
Bills Medicare through one group practice
- Permanente Medical Group IncWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
67 psychiatry physician records list a practice address in Walnut Creek
They are 67 of the 6,170 NPPES records with a practice address in Walnut Creek, and 8,673 psychiatry physician records in California.
All 67 in Walnut Creek → All 8,673 in California → Every provider in Walnut Creek →
Other psychiatry physician records in California
- Nancy Aaen, MDNapa, CA1609816669
- Criselda Abad-Santos, M.D.Woodland Hills, CA1760461826
- Mekabiz Abaian, MDSan Bernardino, CA1891090163
- Brenda Abarca, MDTorrance, CA1407485527
- Pilar Abascal, M.D.Los Angeles, CA1730528191
- Michele Abbasi, M.D.Westlake Village, CA1093940330
- Zohaib AbbasiMartinez, CA1013392224
- Sandy Abdelkedous, MDFresno, CA1306093109
- Nancy Abdelmalak, M.D.Elk Grove, CA1912137498
- Ezzat Abdelmalek, M.DDana Point, CA1992828826
Common questions
What is Tina Nhatthi Tonnu, M.D.'s NPI number?
Tina Nhatthi Tonnu, M.D.'s National Provider Identifier (NPI) is 1790759827, issued on Feb 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tina Nhatthi Tonnu, M.D. located?
The NPPES record lists a practice address at 710 S Broadway, Walnut Creek, CA, 94596. Phone: (925) 295-5210. Providers update this record themselves, so call before visiting.
How can I verify Tina Nhatthi Tonnu, M.D.'s license?
NPPES lists California license number A88767, 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 Tina Nhatthi Tonnu, M.D. prescribe under Medicare Part D?
In 2024, Tina Nhatthi Tonnu, M.D. had 1,288 Medicare Part D claims for 208 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.