Brett Kirk Mullin, M.D.
Internal Medicine Physician · Porterville, CA
Brett Kirk Mullin, M.D. is an internal medicine physician with a practice address in Porterville, California, and NPI 1275949083, issued on Jul 1, 2014. Check the license (California A146698, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brett Kirk Mullin
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A146698 CA
Self-reported in NPPES; status is on the state search - Practice location
- 465 W Putnam Ave, Porterville, CA 93257
- Phone
- (559) 791-3880
- Enumerated
- Jul 1, 2014
- Record last updated
- Aug 4, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170807001779); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 465 W Putnam Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brett Kirk Mullin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A146698Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
315 Medicare Part D claims for 157 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 23 claims were for opioids.
Most prescribed
- Cefpodoxime Proxetil23 claims
- Eliquis20 claims
- Prednisone15 claims
- Hydrocodone-Acetaminophen13 claims
- Spironolactone12 claims
- Amoxicillin-Clavulanate Potass11 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): 72.5 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).
Industry payments in 2024: $22.43
1 payment: food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 50,334 providers of this specialty with any payment received $1,303.06 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 4 group practices
- 24 ON Physicians OF California PCEl Centro, CA
- Central Valley Critical Care Medicine - A Professional CorporatPorterville, CA
- Emergency And Acute Care Medical CorporationSan Diego, CA
- Focus ON Health IncSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brett Kirk Mullin among 17,696 internal medicine physician records in California
Brett Kirk Mullin, 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 2014, is newer than 74% of them.
- NPI issued2014 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2014 · median 2004 among the 11,065 with a school on file
- Record last updated2017 · 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).
32 internal medicine physician records list a practice address in Porterville
They are 32 of the 795 NPPES records with a practice address in Porterville, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Porterville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Iqbal Bal, M.D.Porterville, CA 932571326272071
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- Sartaj Dhillon, MDPorterville, CA 932571053361238
- Antonio Durazo, M.D.Porterville, CA 932571427026145
- Raafat Hana, M.DPorterville, CA 932571568539997
- Hanh Hoang, M.D.Porterville, CA 932571508979865
- Rakesh Jindal, M.D.Porterville, CA 932571700893492
- Cynthia Jones, M.D.Porterville, CA 932571336334945
Common questions
What is Brett Kirk Mullin, M.D.'s NPI number?
Brett Kirk Mullin, M.D.'s National Provider Identifier (NPI) is 1275949083, issued on Jul 1, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Brett Kirk Mullin, M.D. located?
The NPPES record lists a practice address at 465 W Putnam Ave, Porterville, CA, 93257. Phone: (559) 791-3880. Providers update this record themselves, so call before visiting.
How can I verify Brett Kirk Mullin, M.D.'s license?
NPPES lists California license number A146698, 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 Brett Kirk Mullin, M.D. prescribe under Medicare Part D?
In 2024, Brett Kirk Mullin, M.D. had 315 Medicare Part D claims for 157 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Brett Kirk Mullin, M.D.'s MIPS final score?
The 2023 MIPS final score is 72.5 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.