NATHAN HAO HSIN YEN MD
NPI 1013992338
Family Medicine in Riverside, CA

Q: What is Nathan Yen's NPI number?

The NPI number for Nathan Yen is 1013992338. It was assigned to this individual provider in the NPPES registry on December 9, 2005.

Q: What is Nathan Yen's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Nathan Yen was last updated on April 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.

Active since December 09, 2005PECOS EnrolledAccepts Medicare Assignment

6405 DAY ST, RIVERSIDE, CA 92507(951) 697-5427(951) 697-5516 Get Directions Write a Review

NPPES record last updated: April 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Nathan Hao Hsin Yen Md NPPES

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

NATHAN HAO HSIN YEN MD (NPI 1013992338) is an individual family medicine provider in Riverside, California, licensed in California (G72909) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Loma Linda University School Of Medicine (1990).

NPPES Registry Identity

NPI1013992338

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameNATHAN HAO HSIN YENCredential: MD

Location Address6405 DAY STRiverside, CA 92507-0901

Mailing Address6405 Day StRiverside, CA 92507-0901 · (951) 697-5427 · Fax (951) 697-5516

Phone(951) 697-5427

Fax(951) 697-5516

Sole ProprietorNo

Medical School CMSLoma Linda University School Of MedicineGraduated 1990

Enumeration DateDecember 9, 2005

Last NPPES UpdateApril 11, 2025

NPPES CertifiedApril 11, 2025

✔ NPI 1013992338 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in CA · G72909

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

6405 DAY ST, Riverside, CA 92507

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Other Identifiers 1

Other1730180415CA · Group Npi

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

Nathan Hao Hsin Yen 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 ID7911069125

PECOS Enrollment IDI20081223000226

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 4

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 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.

124 services70 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.

119 services76 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.

62 services62 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.

59 services59 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92507 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

$91.88 typical visit price

range $59.60 – $179.42

Typical copayment $22.97 (range $14.90 – $44.85)

Most-billed visit code 99203

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.

Reported Quality Measures

Clinical Information Reconciliation

For at least one transition of care or referral received or patient encounter in which the MIPS eligible clinician has never before encountered the patient, the MIPS eligible clinician performs clinical information reconciliation.

8%694 patients1/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

97%1,999 patients4/55-star benchmark: 100%

Patient-Generated Health Data

Patient-generated health data or data from a non-clinical setting is incorporated into the certified EHR technology for at least one unique patient seen by the MIPS eligible clinician during the performance period.

2%1,085 patients

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from certified EHR technology to identify patient-specific educational resources and provide electronic access to those materials to at least one unique patient seen by the MIPS eligible…

92%1,085 patients4/55-star benchmark: 100%

Provide Patient Access

For at least one unique patient seen by the MIPS eligible clinician: (1) The patient (or the patient authorized representative) is provided timely access to view online, download, and transmit his or her health information; and (2) The MIPS eligible clinician…

79%1,085 patients4/55-star benchmark: 100%

Request/Accept Summary of Care

99%672 patients4/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of certified EHR technology to the patient (or the patient-authorized representative), or in…

31%1,085 patients2/55-star benchmark: 75%

View, Download and Transmit (VDT)

During the performance period, at least one unique patient (or patient-authorized representatives) seen by the MIPS eligible clinician actively engages with the EHR made accessible by the MIPS eligible clinician.

27%1,085 patients

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

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

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

1 supplier11 claims11 services$185.12 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 20

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

MARJORIE TERESA WIMMER MD

Internal Medicine