Marie N. Tumusok, M.D.
Internal Medicine Physician · Davis, CA
Marie N. Tumusok, M.D. is an internal medicine physician with a practice address in Davis, California, and NPI 1437340015, issued on Aug 7, 2007. Check the license (California A98755, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marie N. Tumusok
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A98755 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2030 Sutter Place, Davis, CA 95616
- Phone
- (530) 750-5904
- Enumerated
- Aug 7, 2007
- Record last updated
- Jul 7, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (530) 750-5905
- Medicaid IDs
- GR0089250 CA
RHM53955F CA - Medicare enrollment
- Enrolled (PECOS I20080401000533); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2030 Sutter Place
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marie N. Tumusok in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98755Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average internal medicine physician in 2024
9,120 Medicare Part D claims for 536 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 336 claims were for opioids.
Most prescribed
- Atorvastatin Calcium503 claims
- Levothyroxine Sodium364 claims
- Amlodipine Besylate346 claims
- Gabapentin299 claims
- Hydrocodone-Acetaminophen244 claims
- Losartan Potassium222 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
- Sutter Valley Medical FoundationRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marie N. Tumusok among 17,696 internal medicine physician records in California
Marie N. Tumusok, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2002 · median 2004 among the 11,065 with a school on file
- Record last updated2015 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 internal medicine physician records list a practice address in Davis
They are 33 of the 1,711 NPPES records with a practice address in Davis, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Davis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Alan, M.D.Davis, CA 956161235115635
- Allison Alcalay, M.D.Davis, CA 956161457334716
- Richard Blohm, M.D.Davis, CA 956161821185802
- David Dasilva, M.D.Davis, CA 956161316967938
- Peter Droubay, MDDavis, CA 956161699886200
- David Dycaico, MDDavis, CA 956161033297734
- Michelle Famula, M.D.Davis, CA 956161730256843
- Dermet Fong, MDDavis, CA 956161821169012
Common questions
What is Marie N. Tumusok, M.D.'s NPI number?
Marie N. Tumusok, M.D.'s National Provider Identifier (NPI) is 1437340015, issued on Aug 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marie N. Tumusok, M.D. located?
The NPPES record lists a practice address at 2030 Sutter Place, Davis, CA, 95616. Phone: (530) 750-5904. Providers update this record themselves, so call before visiting.
How can I verify Marie N. Tumusok, M.D.'s license?
NPPES lists California license number A98755, 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 Marie N. Tumusok, M.D. prescribe under Medicare Part D?
In 2024, Marie N. Tumusok, M.D. had 9,120 Medicare Part D claims for 536 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.