DR. KAREN S COLLOM OD
NPI 1104887629
Optometrist in San Mateo, CA

Active since April 01, 2006PECOS EnrolledAccepts Medicare Assignment
3162 CAMPUS DR, SAN MATEO, CA 94403(650) 345-0248(650) 345-7313 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 7, 2023, Mar 25, 2017 (2 updates tracked since 2017).

About Dr. Karen S Collom Od NPPES

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

DR. KAREN S COLLOM OD (NPI 1104887629) is an individual optometrist in San Mateo, California, licensed in California (10267T) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS and is a graduate of University Of California - School Of Optometry (1993).

NPPES Registry Identity

NPI1104887629
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameDR. KAREN S COLLOMCredential: OD
Location Address3162 CAMPUS DRSan Mateo, CA 94403-3123
Mailing Address3162 Campus DrSan Mateo, CA 94403-3123 · (650) 345-0248 · Fax (650) 345-7313
Fax(650) 345-7313
Sole ProprietorYes
Medical School CMSUniversity Of California - School Of OptometryGraduated 1993
Enumeration DateApril 1, 2006
Last NPPES UpdateMarch 7, 20232 updates tracked since enumeration
NPI 1104887629 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License Licensed in CA · 10267T
Definition

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

3162 CAMPUS DR, San Mateo, CA 94403

Other Identifiers 3

OtherSD012670CA · Ptan
Other1104887629Npi
MedicaidSD0102670CA

Accepted Insurance

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 S Collom Od 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 ID6901076934
PECOS Enrollment IDI20120105000324
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 5

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.
74 services71 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).
30 services29 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.
28 services27 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.
19 services19 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94403 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
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.

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 Collom's NPI number?

The NPI number for Karen Collom is 1104887629. It was assigned to this individual provider in the NPPES registry on April 1, 2006.

Where is Karen Collom located?

Karen Collom practices at 3162 Campus Dr, San Mateo, CA 94403. The listed phone number is (650) 345-0248.

What is Karen Collom's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Karen Collom enrolled in Medicare?

Yes. Karen Collom 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.

What insurance does Karen Collom accept?

Health plans from Providence Health Plan list Karen Collom as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Karen Collom was last updated on March 7, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.