DR. SEAN S TO M.D.
NPI 1922163310
Internal Medicine in Chino, CA

Active since December 26, 2006PECOS EnrolledAccepts Medicare Assignment
83.67/100
CMS Quality Rating
5562 PHILADELPHIA ST STE 201, CHINO, CA 91710(909) 988-1000(909) 988-1001 Get Directions Write a Review

NPPES record last updated: August 8, 2020. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Aug 8, 2020, Jun 11, 2020 (2 updates tracked since 2020).

About Dr. Sean S To M.d. NPPES

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

DR. SEAN S TO M.D. (NPI 1922163310) is an individual internal medicine provider in Chino, California, licensed in California (A75204) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of R Franklin University Of Med & Sci/chicago Medical School (1998).

NPPES Registry Identity

NPI1922163310
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. SEAN S TOCredential: M.D.
Location Address5562 PHILADELPHIA ST STE 201Chino, CA 91710-2482
Mailing Address1317 S Diamond Bar Blvd Unit 4462Diamond Bar, CA 91765-5620 · (909) 988-0000 · Fax (909) 988-1001
Fax(909) 988-1001
Sole ProprietorYes
Medical School CMSR Franklin University Of Med & Sci/chicago Medical SchoolGraduated 1998
Enumeration DateDecember 26, 2006
Last NPPES UpdateAugust 8, 20202 updates tracked since enumeration
NPPES CertifiedAugust 8, 2020
NPI 1922163310 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 · A75204
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.

5562 PHILADELPHIA ST STE 201, Chino, CA 91710

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Sean S To 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 ID1850313578
PECOS Enrollment IDI20051222000171
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.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

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.
879 services357 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.
247 services158 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.
209 services209 patients
Annual depression screening, 5 to 15 minutes G0444
An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.
108 services108 patients
Annual alcohol misuse screening, 5 to 15 minutes G0442
An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.
65 services65 patients
Transitional care management services for problem of high complexity 99496
Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.
31 services29 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91710 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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.

83.67/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality77.89
Improvement Activities40
Cost75.06

Referred Medical Equipment & Supplies CMS DME claims 9

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
18 suppliers73 claims187 services$6.18 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
11 suppliers26 claims48 services$1.10 avg. paid by Medicare
Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
4 suppliers12 claims12 services$30.50 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
4 suppliers15 claims90 services$1.52 avg. paid by Medicare
Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
1 supplier19 claims19 services$43.31 avg. paid by Medicare
Continuous positive airway pressure (cpap) device E0601
DME-Other DME · category DE001N
2 suppliers25 claims25 services$21.01 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine
5562 PHILADELPHIA ST STE 201
CHINO, CA 91710
Internal Medicine
5562 PHILADELPHIA ST STE 201
CHINO, CA 91710

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1922163310, enumerated as an "individual" on December 26, 2006.

The provider is located at 5562 PHILADELPHIA ST STE 201 CHINO, CA 91710 and the phone number is (909) 988-1000.

Internal Medicine with taxonomy code 207R00000X.