Brent E. Rathbun, M.D.
Internal Medicine Physician · Del Mar, CA
Brent E. Rathbun, M.D. is an internal medicine physician with a practice address in Del Mar, California, and NPI 1720091697, issued on Aug 14, 2006. Check the license (California A54826, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brent E. Rathbun
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A54826 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2600 Via DE LA Valle, Del Mar, CA 92014
- Phone
- (858) 499-2600
- Enumerated
- Aug 14, 2006
- Record last updated
- Jun 6, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (858) 309-3189
- Medicaid ID
- 00A548260 CA
- Medicare enrollment
- Enrolled (PECOS I20100802000679); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2600 Via DE LA Valle
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Aristotelis Laliotis, M.D.Internal Medicine Physician1124076435
- Andrea Munoz, PACMedical Physician Assistant1528165271
- David Reynaldo, M.D.Internal Medicine Physician1386657187
- Ellenbeth Rodarte, M.D.Family Medicine Physician1205808714
- Richard Scott, M.D.Dermatology Physician1831102482
Verify Brent E. Rathbun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A54826Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average internal medicine physician in 2024
3,140 Medicare Part D claims for 403 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 71 claims were for opioids.
Most prescribed
- Atorvastatin Calcium219 claims
- Rosuvastatin Calcium213 claims
- Lisinopril126 claims
- Levothyroxine Sodium117 claims
- Metoprolol Succinate91 claims
- Metformin Hcl83 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Sharp Rees-Stealy Medical Group IncDel Mar, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brent E. Rathbun among 17,696 internal medicine physician records in California
Brent E. Rathbun, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1994 · median 2004 among the 11,065 with a school on file
- Record last updated2014 · 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).
6 internal medicine physician records list a practice address in Del Mar
They are 6 of the 344 NPPES records with a practice address in Del Mar, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Del Mar → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Aristotelis Laliotis, M.D.Del Mar, CA 920141124076435
- David Reynaldo, M.D.Del Mar, CA 920141386657187
- Carl Trygstad, M.D.Del Mar, CA 920141649370206
- Valerie Youngblood, MDDel Mar, CA 920141538397815
- Steven Zizzo, MD MPH CCFP DABOM OHDel Mar, CA 920141821854910
- Lalitha Padmanabhan Aiyer, MDCarlsbad, CA 920111326373556
- Christine Kelso, MD, MPHCarlsbad, CA 920111821019753
- Valerie Novak, M.D.Carlsbad, CA 920111881769578
Common questions
What is Brent E. Rathbun, M.D.'s NPI number?
Brent E. Rathbun, M.D.'s National Provider Identifier (NPI) is 1720091697, issued on Aug 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brent E. Rathbun, M.D. located?
The NPPES record lists a practice address at 2600 Via DE LA Valle, Del Mar, CA, 92014. Phone: (858) 499-2600. Providers update this record themselves, so call before visiting.
How can I verify Brent E. Rathbun, M.D.'s license?
NPPES lists California license number A54826, 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 Brent E. Rathbun, M.D. prescribe under Medicare Part D?
In 2024, Brent E. Rathbun, M.D. had 3,140 Medicare Part D claims for 403 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Brent E. Rathbun, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.