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DR. BRIAN ARELLANO REYES M.D.
NPI 1972574739
Internal Medicine in Brentwood, CA

Active since January 30, 2006PECOS EnrolledAccepts Medicare Assignment
87.26/100
CMS Quality Rating
6600 LONE TREE WAY STE B, BRENTWOOD, CA 94513(925) 276-9908(925) 276-9893 Get Directions Write a Review

NPPES record last updated: June 27, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 27, 2025, Feb 27, 2025 (2 updates tracked since 2025).

About Dr. Brian Arellano Reyes M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. BRIAN ARELLANO REYES M.D. (NPI 1972574739) is an individual internal medicine provider in Brentwood, California, licensed in California (A73587) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1989).

NPPES Registry Identity

NPI1972574739
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. BRIAN ARELLANO REYESCredential: M.D.
Location Address6600 LONE TREE WAY STE BBrentwood, CA 94513-5256
Mailing Address6600 Lone Tree WayBrentwood, CA 94513-5256 · (925) 276-9908 · Fax (925) 276-9893
Phone(925) 276-9908
Fax(925) 276-9893
Sole ProprietorYes
Medical School CMSOtherGraduated 1989
Enumeration DateJanuary 30, 2006
Last NPPES UpdateJune 27, 20252 updates tracked since enumeration
NPPES CertifiedJune 27, 2025
✔ NPI 1972574739 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A73587
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
6600 LONE TREE WAY STE B, Brentwood, CA 94513
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Brian Arellano Reyes M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3678514551
PECOS Enrollment IDI20050520000534
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Brian Reyes reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Bass Medical Group
2.9 mi
Orthopaedic Surgery
2350 COUNTRY HILLS DR, SUITE B
Antioch, CA 94509
  • Reassigned Medicare billing, California enrollment
  • 347 clinicians in this Medicare group
NPI 1396124574 (925) 528-2663

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
636 services183 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
562 services201 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
386 services181 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
96 services96 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
42 services39 patients
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180
This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.
28 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94513 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

87.26/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality82.97
Promoting Interoperability85.91
Improvement Activities40

Reported Quality Measures

Appropriate Testing for Pharyngitis
4%28 patients1/55-star benchmark: 100%
Appropriate Treatment for Upper Respiratory Infection (URI)
47%47 patients2/55-star benchmark: 100%
Appropriate Use of DXA Scans in Women Under 65 Years Who Do Not Meet the Risk Factor Profile for Osteoporotic Fracture
Lower rates are better for this measure.
2%59 patients
Breast Cancer Screening
56%218 patients3/55-star benchmark: 93%
Cervical Cancer Screening
61%192 patients3/55-star benchmark: 98%
Colorectal Cancer Screening
20%596 patients1/55-star benchmark: 88%
Controlling High Blood Pressure
78%429 patients4/55-star benchmark: 91%
Diabetes: Eye Exam
1%164 patients1/55-star benchmark: 100%
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
Lower rates are better for this measure.
49%164 patients3/55-star benchmark: 91%
Documentation of Current Medications in the Medical Record
80%2,916 patients3/55-star benchmark: 100%
e-Prescribing
100%1,287 patients5/55-star benchmark: 100%
Falls: Screening for Future Fall Risk
66%517 patients3/55-star benchmark: 100%
HIV Screening
19%549 patients2/55-star benchmark: 60%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
34%999 patients2/55-star benchmark: 98%
Preventive Care and Screening: Screening for Depression and Follow-Up Plan
52%837 patients3/55-star benchmark: 97%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Patients combinedPopulations: 75% · 929 patients
Patients screened: 80% · 929 patients
24%54 patients1/55-star benchmark: 100%
Provide Patients Electronic Access to Their Health Information
100%643 patients5/55-star benchmark: 100%
Statin Therapy for the Prevention and Treatment of Cardiovascular Disease
77%465 patients4/55-star benchmark: 91%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
12 suppliers33 claims71 services$6.63 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
7 suppliers12 claims14 services$1.08 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
2 suppliers14 claims14 services$163.43 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Brian Reyes's NPI number?

The NPI number for Brian Reyes is 1972574739. It was assigned to this individual provider in the NPPES registry on January 30, 2006.

Where is Brian Reyes located?

Brian Reyes practices at 6600 Lone Tree Way Ste B, Brentwood, CA 94513. The listed phone number is (925) 276-9908.

What is Brian Reyes's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Brian Reyes enrolled in Medicare?

Yes. Brian Reyes is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Brian Reyes's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Brian Reyes reassigns Medicare benefits to Bass Medical Group (Antioch, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Brian Reyes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Brian Reyes was last updated on June 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.