Nathan H. Thuma, M.D.
Psychiatry Physician · Angwin, CA
Nathan H. Thuma, M.D. is a psychiatry physician with a practice address in Angwin, California, and NPI 1245316314, issued on Oct 31, 2006. Check the license (California G58451, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathan H. Thuma
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G58451 CA
Self-reported in NPPES; status is on the state search - Practice location
- 295 Pine Breeze Dr, Angwin, CA 94508
- Phone
- (707) 965-2461
- Enumerated
- Oct 31, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 965-2700
- Medicaid IDs
- 00G584512 CA
00G584510 CA - Medicare enrollment
- Enrolled (PECOS I20051108000425); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify Nathan H. Thuma in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G58451Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average psychiatry physician in 2024
2,222 Medicare Part D claims for 71 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Clozapine271 claims
- Clozapine Odt147 claims
- Lithium Carbonate113 claims
- Haloperidol Decanoate96 claims
- Haloperidol88 claims
- Bupropion Xl86 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: $1,340.17
36 payments; by number, the most common kind was food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, Inc.). The 13,693 providers of this specialty with any payment received $4,954.93 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.
Bills Medicare through one group practice
- Department OF State HospitalsNapa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan H. Thuma among 8,673 psychiatry physician records in California
Nathan H. Thuma, 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 fileYes · 38% of these records are
- Graduated1985 · 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).
1 psychiatry physician record lists a practice address in Angwin
They are 1 of the 22 NPPES records with a practice address in Angwin, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Angwin → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Thomas Jones, MDAntioch, CA 945091871645846
- Derek Mongold, MDAntioch, CA 945091700099264
- Kyle Owen, DOAntioch, CA 945091346392578
- Kavitha Rao, M.D.Antioch, CA 945091568527240
- Harinder Auluck, MDBenicia, CA 945101538111661
- Robert Fisher, MDBenicia, CA 945101760631626
- Said Ibrahimi, M.D.Danville, CA 945061740560861
- Ronel Lewis, MDDanville, CA 945061558588129
Common questions
What is Nathan H. Thuma, M.D.'s NPI number?
Nathan H. Thuma, M.D.'s National Provider Identifier (NPI) is 1245316314, issued on Oct 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nathan H. Thuma, M.D. located?
The NPPES record lists a practice address at 295 Pine Breeze Dr, Angwin, CA, 94508. Phone: (707) 965-2461. Providers update this record themselves, so call before visiting.
How can I verify Nathan H. Thuma, M.D.'s license?
NPPES lists California license number G58451, 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 Nathan H. Thuma, M.D. prescribe under Medicare Part D?
In 2024, Nathan H. Thuma, M.D. had 2,222 Medicare Part D claims for 71 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.