Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

REX CHEN HSEI MD
NPI 1285637157
Ophthalmology in Santa Cruz, CA

Q: What is Rex Hsei's NPI number?

The NPI number for Rex Hsei is 1285637157. It was assigned to this individual provider in the NPPES registry on May 24, 2005.

Q: What is Rex Hsei's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Q: When was this NPI record last updated?

The NPPES record for Rex Hsei was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since May 24, 2005PECOS Enrolled

98.66/100

CMS Quality Rating

1665 DOMINICAN WAY, STE 124, SANTA CRUZ, CA 95065(831) 475-7012 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Rex Chen Hsei Md NPPES

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

REX CHEN HSEI MD (NPI 1285637157) is an individual ophthalmology provider in Santa Cruz, California, licensed in California (A71449) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS and is a graduate of Hahnemann University College Of Medicine (1996).

NPPES Registry Identity

NPI1285637157

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameREX CHEN HSEICredential: MD

Location Address1665 DOMINICAN WAY, STE 124Santa Cruz, CA 95065-1528

Mailing Address1665 Dominican Way, Ste 124Santa Cruz, CA 95065-1528 · (831) 475-7012

Phone(831) 475-7012

Sole ProprietorNo

Medical School CMSHahnemann University College Of MedicineGraduated 1996

Enumeration DateMay 24, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1285637157 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in CA · A71449

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

1665 DOMINICAN WAY, Santa Cruz, CA 95065

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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

Rex Chen Hsei 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 ID8628168853

PECOS Enrollment IDI20080805000224

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 13

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 complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

1,107 services1,095 patients

Established patient problem focused exam of visual system 92012

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

1,003 services641 patients

Measurement of corneal curvature and depth of eye 92136

This procedure measures the shape and depth of your eye, specifically the cornea, the clear front surface. It helps in diagnosing conditions, planning for surgeries, or fitting contact lenses. It's non-invasive and painless.

527 services223 patients

Removal of cataract with insertion of prosthetic lens 66984

This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.

334 services191 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

279 services279 patients

Exam of visual field with extended testing 92083

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

215 services213 patients

Imaging of optic nerve 92133

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

201 services200 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.

154 services154 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.

103 services101 patients

Removal of recurring cataract in lens capsule using a laser 66821

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

66 services57 patients

Complex removal of cataract with insertion of prosthetic lens 66982

This procedure involves removing a cloudy lens (cataract) from your eye and replacing it with a clear, artificial lens. It helps restore vision that has been affected by the cataract. The operation is usually done under local anesthesia.

59 services42 patients

Imaging of retina 92134

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

30 services30 patients

Ultrasound scan of cornea to determine thickness 76514

An ultrasound scan of the cornea is a non-invasive procedure that uses sound waves to measure the thickness of your cornea. This helps in diagnosing certain eye conditions and planning treatments. No discomfort or pain is typically experienced.

25 services25 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95065 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

$141.77 typical visit price

range $62.97 – $186.69

Typical copayment $35.44 (range $15.74 – $46.67)

Most-billed visit code 99204

Established Patient

$77.84 typical visit price

range $21.02 – $153.16

Typical copayment $19.46 (range $5.25 – $38.29)

Most-billed visit code 99213

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.

98.66/100

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

Scored as part of a group practice

Quality

100

Improvement Activities

Cost

82.47

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.

Frames, purchases V2020

Other-Vision, Hearing, and Speech Services · category OC000N

1 supplier35 claims35 services$65.73 avg. paid by Medicare

Spherocylinder, single vision, plano to plus or minus 4.00d sphere, .12 to 2.00d cylinder, per lens V2103

Other-Vision, Hearing, and Speech Services · category OC000N

1 supplier18 claims36 services$31.01 avg. paid by Medicare

Spherocylinder, bifocal, plano to plus or minus 4.00d sphere, .12 to 2.00d cylinder, per lens V2203

Other-Vision, Hearing, and Speech Services · category OC000N

1 supplier25 claims50 services$49.16 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 14

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

DR. ORKIDA SOLOMON OD

Optometrist

1665 DOMINICAN WAY, SUITE 124
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-6943

MR. AARON B MORSE MD

Internal Medicine (Pulmonary Disease)

1665 DOMINICAN WAY, SUITE 222A
SANTA CRUZ, CA 95065

Santa Cruz County (831) 465-0586

PATRICIA L KUBO MD

Anesthesiology

1665 DOMINICAN WAY, SUITE 120
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-6943

ANDREW MORELAND M.D., INC

Anesthesiology

1665 DOMINICAN WAY
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-6943

MRS. MARTHA ANNE STEWART PA

Physician Assistant

1665 DOMINICAN WAY, SUITE 222
SANTA CRUZ, CA 95065

Santa Cruz County (844) 387-5337

PATRICIA L. KUBO MD INC

Anesthesiology

1665 DOMINICAN WAY
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-6943

A BETTER WEIGH, M.D.

Internal Medicine

1665 DOMINICAN WAY, SUITE 222
SANTA CRUZ, CA 95065

Santa Cruz County (831) 465-0586

DR. TED A BAILEY OD

Optometrist

1665 DOMINICAN WAY, SUITE 224
SANTA CRUZ, CA 95065

Santa Cruz County (831) 476-8033

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 Rex Hsei's NPI number?

The NPI number for Rex Hsei is 1285637157. It was assigned to this individual provider in the NPPES registry on May 24, 2005.

Where is Rex Hsei located?

Rex Hsei practices at 1665 Dominican Way Ste 124, Santa Cruz, CA 95065. The listed phone number is (831) 475-7012.

What is Rex Hsei's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Rex Hsei enrolled in Medicare?

Yes. Rex Hsei 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.

When was this NPI record last updated?

The NPPES record for Rex Hsei was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.