Brian Arellano Reyes, M.D.
Internal Medicine Physician · Brentwood, CA
Brian Arellano Reyes, M.D. is an internal medicine physician with a practice address in Brentwood, California, and NPI 1972574739, issued on Jan 30, 2006. Check the license (California A73587, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brian Arellano Reyes
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A73587 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6600 Lone Tree Way Ste B, Brentwood, CA 94513
- Phone
- (925) 276-9908
- Enumerated
- Jan 30, 2006
- Record last updated
- Jun 27, 2025
- Fax
- (925) 276-9893
- Medicare enrollment
- Enrolled (PECOS I20050520000534); 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 →
Verify Brian Arellano Reyes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A73587Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average internal medicine physician in 2024
6,383 Medicare Part D claims for 461 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 418 claims were for opioids.
Most prescribed
- Atorvastatin Calcium341 claims
- Levothyroxine Sodium338 claims
- Hydrocodone-Acetaminophen211 claims
- Amlodipine Besylate204 claims
- Rosuvastatin Calcium172 claims
- Gabapentin162 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 MIPS final score for 2023 (Medicare payment program): 87.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $24.77
1 payment: food and beverage; the largest payer was Abbvie Inc. 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 one group practice
- Bass Medical GroupAlamo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Arellano Reyes among 17,696 internal medicine physician records in California
Brian Arellano Reyes, 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
- Graduated1989 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
7 internal medicine physician records list a practice address in Brentwood
They are 7 of the 1,212 NPPES records with a practice address in Brentwood, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Brentwood → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sherry Albrink, M.D.Brentwood, CA 945131417224197
- Sinan Alshahwany, M.D.Brentwood, CA 945131801997440
- Joline Heo, M.D.Brentwood, CA 945131083881858
- Spencer Martin, M.D.Brentwood, CA 945131942325220
- Yogesh Trehan, M.D.Brentwood, CA 945131255372769
- Jeevarathna Subramanian, MDBenicia, CA 945101790752186
- Martin Cogburn, MDAntioch, CA 945091134208275
- Mira Elnan, MDAntioch, CA 945091164876157
Common questions
What is Brian Arellano Reyes, M.D.'s NPI number?
Brian Arellano Reyes, M.D.'s National Provider Identifier (NPI) is 1972574739, issued on Jan 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian Arellano Reyes, M.D. located?
The NPPES record lists a practice address at 6600 Lone Tree Way Ste B, Brentwood, CA, 94513. Phone: (925) 276-9908. Providers update this record themselves, so call before visiting.
How can I verify Brian Arellano Reyes, M.D.'s license?
NPPES lists California license number A73587, 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 Brian Arellano Reyes, M.D. prescribe under Medicare Part D?
In 2024, Brian Arellano Reyes, M.D. had 6,383 Medicare Part D claims for 461 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Brian Arellano Reyes, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.3 of 100. 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.