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DR. MARK ALAN WILLIAMS O.D.
NPI 1508947276
Optometrist in West Lafayette, IN

Active since October 18, 2006PECOS Enrolled
307 SAGAMORE PKWY W, WEST LAFAYETTE, IN 47906(765) 463-4558(765) 497-2154 Get Directions Write a Review

NPPES record last updated: September 28, 2020. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 28, 2020, Jan 16, 2018, Dec 10, 2017 and 2 more (5 updates tracked since 2015).

About Dr. Mark Alan Williams O.d. NPPES

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

DR. MARK ALAN WILLIAMS O.D. (NPI 1508947276) is an individual optometrist in West Lafayette, Indiana, licensed in Indiana (18003424A) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Indiana University - School Of Optometry (2006).

NPPES Registry Identity

NPI1508947276
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameDR. MARK ALAN WILLIAMSCredential: O.D.
Location Address307 SAGAMORE PKWY WWest Lafayette, IN 47906-1500
Mailing Address307 Sagamore Pkwy WWest Lafayette, IN 47906-1500 · (765) 463-4558 · Fax (765) 497-2154
Phone(765) 463-4558
Fax(765) 497-2154
Sole ProprietorNo
Medical School CMSIndiana University - School Of OptometryGraduated 2006
Enumeration DateOctober 18, 2006
Last NPPES UpdateSeptember 28, 20205 updates tracked since enumeration
NPPES CertifiedSeptember 28, 2020
✔ NPI 1508947276 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 IN · 18003424A
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.
307 SAGAMORE PKWY W, West Lafayette, IN 47906
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Other Identifiers 1

Other18003424AIN · Indiana License

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark Alan Williams O.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3375667124
PECOS Enrollment IDI20100831000271
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 6

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.
43 services43 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.
28 services24 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.
22 services11 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.
19 services19 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
15 services12 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.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 47906 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
$122.49 typical visit price
range $53.07 – $161.76
Typical copayment $30.62 (range $13.26 – $40.44)
Most-billed visit code 99204
Established Patient
$66.48 typical visit price
range $16.93 – $132.22
Typical copayment $16.62 (range $4.23 – $33.05)
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.

Other Providers at the Same Location NPPES 2

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

JESSICA ELAINE UMHOLTZ COTA
Occupational Therapy Assistant
307 SAGAMORE PKWY W
WEST LAFAYETTE, IN 47906
Tippecanoe County (765) 463-2200
MONICA M MARKLEY PTA
Physical Therapy Assistant
307 SAGAMORE PKWY W
WEST LAFAYETTE, IN 47906
Tippecanoe County (765) 463-2200

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 Mark Williams's NPI number?

The NPI number for Mark Williams is 1508947276. It was assigned to this individual provider in the NPPES registry on October 18, 2006.

Where is Mark Williams located?

Mark Williams practices at 307 Sagamore Pkwy W, West Lafayette, IN 47906. The listed phone number is (765) 463-4558.

What is Mark Williams's specialty?

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

Is Mark Williams enrolled in Medicare?

Yes. Mark Williams is registered in the Medicare PECOS enrollment system.

What insurance does Mark Williams accept?

Health plans from CareSource and Providence Health Plan list Mark Williams 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 Mark Williams was last updated on September 28, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.