DR. HAMILTON CHEN MD
NPI 1700019528
Physical Medicine & Rehabilitation - Pain Medicine in Riverside, CA

Q: What is Hamilton Chen's NPI number?

The NPI number for Hamilton Chen is 1700019528. It was assigned to this individual provider in the NPPES registry on August 27, 2009.

Q: What is Hamilton Chen's specialty?

The primary specialty registered for this NPI is Physical Medicine & Rehabilitation, specializing in Pain Medicine, with taxonomy code 2081P2900X.

Q: When was this NPI record last updated?

The NPPES record for Hamilton Chen was last updated on May 18, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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.

Active since August 27, 2009PECOS EnrolledAccepts Medicare Assignment

79.61/100

CMS Quality Rating

6900 BROCKTON AVE, STE 103, RIVERSIDE, CA 92506(951) 784-7111(951) 823-0378 Get Directions Write a Review

NPPES record last updated: May 18, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Hamilton Chen Md NPPES

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

DR. HAMILTON CHEN MD (NPI 1700019528) is an individual pain medicine provider in Riverside, California, licensed in California (A113744) and active in the NPI registry since August 2009. He is enrolled in Medicare PECOS and is a graduate of State University Of New York Downstate Medical Center (2009).

NPPES Registry Identity

NPI1700019528

Entity TypeIndividualMale

Primary Taxonomy2081P2900X

Provider Legal NameDR. HAMILTON CHENCredential: MD

Location Address6900 BROCKTON AVE, STE 103Riverside, CA 92506-3817

Mailing Address6900 Brockton Ave, Ste 103Riverside, CA 92506-3817 · (951) 784-7111 · Fax (951) 823-0378

Phone(951) 784-7111

Fax(951) 823-0378

Sole ProprietorNo

Medical School CMSState University Of New York Downstate Medical CenterGraduated 2009

Enumeration DateAugust 27, 2009

Last NPPES UpdateMay 18, 2016

✔ NPI 1700019528 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysical Medicine & Rehabilitation · Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2081P2900X

License✔ Licensed in CA · A113744

Definition

A physician who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic or cancer pain in both hospital and ambulatory settings. Patient care needs may also be coordinated with other specialists.

6900 BROCKTON AVE, Riverside, CA 92506

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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. Hamilton Chen Md 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 ID4385868520

PECOS Enrollment IDI20140610001059

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 Hamilton Chen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Pain Consultants, Inc.

Same address

Pain Medicine

6900 BROCKTON AVE, SUITE #103
Riverside, CA 92506

Reassigned Medicare billing, California enrollment
6 clinicians in this Medicare group

NPI 1467649657 (951) 784-7111

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 12

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.

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.

1,217 services244 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

688 services99 patients

Low osmolar contrast material, 100-199 mg/ml iodine concentration, per ml Q9965

Low osmolar contrast material with 100-199 mg/ml iodine concentration is a type of dye used in medical imaging tests. It helps to clearly highlight certain areas in the body, improving the quality of images and aiding in accurate diagnosis. It's generally safe and well-tolerated.

376 services62 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

260 services20 patients

Testing for presence of drug, read by direct observation 80305

Testing for the presence of drugs involves collecting a sample, usually urine, which is then analyzed for specific substances. The process is monitored directly to ensure accuracy and integrity. This test helps to confirm if drugs are present in your system.

167 services128 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.

140 services87 patients

Injection of substance into lower spine canal using imaging guidance 62323

This procedure involves injecting a substance into your lower spine canal, guided by real-time images. It's done to diagnose or treat various conditions. You may feel slight discomfort, but it's generally safe and can provide valuable information for your treatment plan.

79 services54 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

69 services69 patients

Injection of lower or sacral spine facet joint using imaging guidance, single level 64493

This procedure involves injecting medication into the facet joint in your lower back or sacral spine. It's done under imaging guidance to ensure accuracy. The aim is to alleviate pain and inflammation. It's a safe, often effective method for managing spinal discomfort.

22 services17 patients

Injection of lower or sacral spine facet joint using imaging guidance, second level 64494

This procedure involves injecting medication into the facet joints of your lower or sacral spine to manage pain. Imaging guidance ensures accurate placement. It's the second level, meaning it's done on two different joint levels.

22 services17 patients

Injection of trigger points, 3 or more muscles 20553

Trigger point injection therapy involves injecting medication into specific areas of your muscles, known as trigger points. These are areas that produce pain and discomfort. If you have three or more muscles affected, each will be treated individually.

19 services12 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

18 services13 patients

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.

79.61/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

50.95

Promoting Interoperability

Improvement Activities

Reported Quality Measures

Advance Care Plan

0%978 patients1/55-star benchmark: 100%

Closing the Referral Loop: Receipt of Specialist Report

9%505 patients1/55-star benchmark: 87%

Colorectal Cancer Screening

0%2,247 patients1/55-star benchmark: 88%

Diabetes: Eye Exam

0%32 patients1/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

100%32 patients1/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

76%14,656 patients3/55-star benchmark: 100%

e-Prescribing

99%631 patients4/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

0%911 patients1/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

7%2,513 patients1/55-star benchmark: 98%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

7%4,186 patients1/55-star benchmark: 61%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients screened: 1% · 2,213 patients

1%2,213 patients

Provide Patients Electronic Access to Their Health Information

65%1,958 patients3/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

83%42 patients4/55-star benchmark: 91%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 0% · 1,004 patients

Patients totalRate: 14% · 1,004 patients

14%1,004 patients3/55-star benchmark: 100%

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.

Other Providers at the Same Location NPPES 11

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

DR. JACK BARTLETT KISTLER MD

Family Medicine

6900 BROCKTON AVE, STE 11
RIVERSIDE, CA 92506

Riverside County (951) 682-6263

3ACE MEDICAL SUPPLY, INC.

Durable Medical Equipment & Medical Supplies

6900 BROCKTON AVE, STE 10
RIVERSIDE, CA 92506

Riverside County (951) 327-0940

GARY K. T. PANG, A PROFESSIONAL CORPORATION

Anesthesiology (Pain Medicine)

6900 BROCKTON AVE
RIVERSIDE, CA 92506

Riverside County (951) 784-7111

UNIVERSITY PAIN CONSULTANTS, INC.

Anesthesiology (Pain Medicine)

6900 BROCKTON AVE, SUITE #103
RIVERSIDE, CA 92506

Riverside County (951) 784-7111

PARISSA DJAFARI DDS

Dentist

6900 BROCKTON AVE, SUITE #2
RIVERSIDE, CA 92506

Riverside County (951) 682-2245

RAINIER E. GUIANG, M.D., A MEDICAL CORPORATION

Anesthesiology (Pain Medicine)

6900 BROCKTON AVE, SUITE #1
RIVERSIDE, CA 92506

Riverside County (951) 202-3687

RAINIER MARK ENRIQUE GUIANG M.D.

Anesthesiology (Pain Medicine)

6900 BROCKTON AVE, SUITE 103
RIVERSIDE, CA 92506

Riverside County (951) 784-7111

MR. STEVEN MIRANDA DC

Chiropractor

6900 BROCKTON AVE, SUITE 1
RIVERSIDE, CA 92506

Riverside County (951) 788-9635

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 Hamilton Chen's NPI number?

The NPI number for Hamilton Chen is 1700019528. It was assigned to this individual provider in the NPPES registry on August 27, 2009.

Where is Hamilton Chen located?

Hamilton Chen practices at 6900 Brockton Ave Ste 103, Riverside, CA 92506. The listed phone number is (951) 784-7111.

What is Hamilton Chen's specialty?

The primary specialty registered for this NPI is Physical Medicine & Rehabilitation, specializing in Pain Medicine, with taxonomy code 2081P2900X.

Is Hamilton Chen enrolled in Medicare?

Yes. Hamilton Chen 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 Hamilton Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hamilton Chen reassigns Medicare benefits to University Pain Consultants, Inc. (Riverside, 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 Hamilton Chen'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 Hamilton Chen was last updated on May 18, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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.