DR. KAREN SHIH M.D.
NPI 1750565982
Ophthalmology in Sunnyvale, CA

Q: What is Karen Shih's NPI number?

The NPI number for Karen Shih is 1750565982. It was assigned to this individual provider in the NPPES registry on December 24, 2007.

Q: What is Karen Shih'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 Karen Shih was last updated on December 7, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since December 24, 2007PECOS EnrolledAccepts Medicare Assignment

323 N MATHILDA AVE, SUNNYVALE, CA 94085(408) 524-5900 Get Directions Write a Review

NPPES record last updated: December 7, 2011. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Karen Shih M.d. NPPES

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

DR. KAREN SHIH M.D. (NPI 1750565982) is an individual ophthalmology provider in Sunnyvale, California, licensed in California (A93631) and active in the NPI registry since December 2007. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (2004).

NPPES Registry Identity

NPI1750565982

Entity TypeIndividualFemale

Primary Taxonomy207W00000X

Provider Legal NameDR. KAREN SHIHCredential: M.D.

Location Address323 N MATHILDA AVESunnyvale, CA 94085-4207

Mailing Address2350 W El Camino Real, 2nd FloorMountain View, CA 94040-6201

Phone(408) 524-5900

Sole ProprietorNo

Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 2004

Enumeration DateDecember 24, 2007

Last NPPES UpdateDecember 7, 2011

✔ NPI 1750565982 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in CA · A93631

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.

323 N MATHILDA AVE, Sunnyvale, CA 94085

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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

Dr. Karen Shih 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 ID4486713054

PECOS Enrollment IDI20081111000776

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 14

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.

430 services309 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.

413 services269 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).

396 services240 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.

383 services166 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.

188 services153 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.

183 services118 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.

108 services108 patients

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.

73 services71 patients

Exam of the internal drainage system of eye 92020

This is a procedure where your doctor examines the eye's internal drainage system, essential for maintaining eye pressure. They use specialized tools to check for blockages or damage that might lead to conditions like glaucoma. It's non-invasive and painless.

53 services46 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.

38 services30 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.

30 services24 patients

Ct scan of cornea 92025

A CT scan of the cornea is a non-invasive imaging test that uses X-rays to capture detailed pictures of your eye's cornea. It helps in diagnosing diseases or damage, planning for surgery, or evaluating the results of a treatment. It's a safe and painless procedure.

18 services18 patients

Imaging of front third of eye using a special microscope 92286

This procedure involves capturing detailed images of the front part of your eye using a specialized microscope. It helps in identifying any eye abnormalities or issues, improving the accuracy of diagnosis and treatment planning.

18 services18 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.

17 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94085 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

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

Established Patient

$86.56 typical visit price

range $23.96 – $169.60

Typical copayment $21.64 (range $5.99 – $42.40)

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.

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Other Providers at the Same Location NPPES 4

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

DR. TRENNDA RITTENBACH O.D.

Optometrist

323 N MATHILDA AVE
SUNNYVALE, CA 94085

Santa Clara County (408) 524-5900

JERRY LAI M.D.

Ophthalmology

323 N MATHILDA AVE
SUNNYVALE, CA 94085

Santa Clara County (408) 524-5900

JILL ACKERMAN MD

Ophthalmology

323 N MATHILDA AVE
SUNNYVALE, CA 94085

Santa Clara County (408) 524-5900

CAROL WINTON MD

Ophthalmology

323 N MATHILDA AVE
SUNNYVALE, CA 94085

Santa Clara County (408) 524-5900

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 Karen Shih's NPI number?

The NPI number for Karen Shih is 1750565982. It was assigned to this individual provider in the NPPES registry on December 24, 2007.

Where is Karen Shih located?

Karen Shih practices at 323 N Mathilda Ave, Sunnyvale, CA 94085. The listed phone number is (408) 524-5900.

What is Karen Shih's specialty?

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

Is Karen Shih enrolled in Medicare?

Yes. Karen Shih 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 Karen Shih was last updated on December 7, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.