Ross Thomas Caulfield, MD
Family Medicine Physician · Tracy, CA
Ross Thomas Caulfield, MD is a family medicine physician with a practice address in Tracy, California, and NPI 1356764518, issued on Jan 23, 2014. Check the license (California A152106, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ross Thomas Caulfield
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A152106 CA
Self-reported in NPPES; status is on the state search - Practice location
- 445 W Eaton Ave, Tracy, CA 95376
- Phone
- (209) 832-0535
- Enumerated
- Jan 23, 2014
- Record last updated
- Sep 24, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200130003003); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 445 W Eaton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ross Thomas Caulfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A152106Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average family medicine physician in 2024
3,070 Medicare Part D claims for 255 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 127 claims were for opioids.
Most prescribed
- Atorvastatin Calcium229 claims
- Amlodipine Besylate143 claims
- Lisinopril108 claims
- Omeprazole86 claims
- Gabapentin80 claims
- Hydrocodone-Acetaminophen79 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 FoundationSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
35 family medicine physician records list a practice address in Tracy
They are 35 of the 1,864 NPPES records with a practice address in Tracy, and 17,133 family medicine physician records in California.
All 35 in Tracy → All 17,133 in California → Every provider in Tracy →
Other family medicine physician records in California
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- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Ross Thomas Caulfield, MD's NPI number?
Ross Thomas Caulfield, MD's National Provider Identifier (NPI) is 1356764518, issued on Jan 23, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Ross Thomas Caulfield, MD located?
The NPPES record lists a practice address at 445 W Eaton Ave, Tracy, CA, 95376. Phone: (209) 832-0535. Providers update this record themselves, so call before visiting.
How can I verify Ross Thomas Caulfield, MD's license?
NPPES lists California license number A152106, 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 Ross Thomas Caulfield, MD prescribe under Medicare Part D?
In 2024, Ross Thomas Caulfield, MD had 3,070 Medicare Part D claims for 255 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.