Thomas Robert Calkins, M.D.
Emergency Medicine Physician · Chula Vista, CA
Thomas Robert Calkins, M.D. is an emergency medicine physician with a practice address in Chula Vista, California, and NPI 1720037518, issued on May 9, 2006. Check the license (California A77312, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas Robert Calkins
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A77312 CA
Self-reported in NPPES; status is on the state search - Practice location
- 751 Medical Center Court, Chula Vista, CA 91911
- Phone
- (619) 482-5800
- Enumerated
- May 9, 2006
- Record last updated
- Jul 13, 2026
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Verify Thomas Robert Calkins in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A77312Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% more Medicare Part D claims than the average emergency medicine physician in 2024
314 Medicare Part D claims for 214 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 37 claims were for opioids.
Most prescribed
- Cephalexin41 claims
- Hydrocodone-Acetaminophen33 claims
- Prednisone19 claims
- Amoxicillin-Clavulanate Potass16 claims
- Azithromycin15 claims
- Methylprednisolone15 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.
Thomas Robert Calkins among 7,751 emergency medicine physician records in California
Thomas Robert Calkins, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Chula Vista → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Aaron Abrahamsen, M.D.Chula Vista, CA 919111427204023
- Karrar Ali, D.O.Chula Vista, CA 919111164414827
- Gregg Bolotin, M.D.Chula Vista, CA 919111366451601
- Kevin Calhoun, M.D.Chula Vista, CA 919111144239401
- James Corbett-Detig, MDChula Vista, CA 919111902224686
- Jeffrey Overcash, MDChula Vista, CA 919111104814680
- Ran Regev, M.D.Chula Vista, CA 919111760412050
- Cathy Rogowski, M.D.Chula Vista, CA 919111407947435
Common questions
What is Thomas Robert Calkins, M.D.'s NPI number?
Thomas Robert Calkins, M.D.'s National Provider Identifier (NPI) is 1720037518, issued on May 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Robert Calkins, M.D. located?
The NPPES record lists a practice address at 751 Medical Center Court, Chula Vista, CA, 91911. Phone: (619) 482-5800. Providers update this record themselves, so call before visiting.
How can I verify Thomas Robert Calkins, M.D.'s license?
NPPES lists California license number A77312, 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 Thomas Robert Calkins, M.D. prescribe under Medicare Part D?
In 2024, Thomas Robert Calkins, M.D. had 314 Medicare Part D claims for 214 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.