Unknown Individual – Optometrist, NPI 1598838120

Unknown Individual is a healthcare provider. based in Buffalo grove, Illinois. specializing in Optometrist. They hold a License No. 46-09448 (IL). The NPI Number for Unknown Individual is 1598838120

Main info

Organization
Inactive
24 Years Of Experience
Accepts Medicare Assignment
Name
Unknown Individual
NPI
1598838120
Phone
(847) 459-6060
Address
1120 W LAKE COOK RD STE C
Deactivation Date
23 April 2026

Doctor Profile

Medical School Name
ILLINOIS COLLEGE OF OPTOMETRY AT CHICAGO
Secondary Phone
8473824116
Graduation Year
2002 (24 years ago)
PAC ID
2961699806
Group Practice PAC ID
6305826520
Professional Enrollment ID
I20101206000131
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience14
Completeness75
Years active:0State licenses:1Digital endpointsOther names

Provider Addresses for Unknown Individual

  • 1120 W LAKE COOK RD STE C

    BUFFALO GROVE, IL 600891970

    Phone: (847) 459-6060

    Fax: (847) 459-9797

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 2 Open Payments records for all available years, with a total value of $74.

Total Amount is formed as General ($74) + Research ($0) + Ownership ($0) = $74.

Last reported payment date: 2024-11-15 • Largest payer in this snapshot: Gilead Sciences, Inc. ($56).

Total Amount

$74

General + Research + Ownership

Payments

2

Total payment records

General Amount

$74

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-11-15

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20101206000131IOptometryILTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
92012Established patient problem focused exam of visual system719453$0
92285Photography of content of eyes603453$0
92250Photography of the retina297279$0
92083Exam of visual field with extended testing249218$0
92014Established patient complete exam of visual system232229$0
View full utilization report →

Insurance plans in this area (ZIP 60089)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 6305826520View full group profile
NameSpecialtyState
O P T O M E T R YIL
O P H T H A L M O L O G YIL
O P H T H A L M O L O G YIL
O P T O M E T R YIL
O P H T H A L M O L O G YIL
O P T O M E T R YIL
O P H T H A L M O L O G YIL
O P T O M E T R YMO

Reviews

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Frequently asked questions

How do payers reference Unknown Individual?
For Unknown Individual, use NPI 1598838120 as the unique 10-digit identifier.
Is inactive the same as retired for Unknown Individual?
Inactive registry status can reflect deactivation, consolidation, or data lag.
What area of care is associated with Unknown Individual?
Unknown Individual's record emphasizes Optometrist. Clinical services aligned with this taxonomy classification.
Is Unknown Individual associated with Buffalo Grove?
Public fields place Unknown Individual around Buffalo Grove, Illinois. Always confirm the exact site before visiting.
Does inactive status remove historical data?
Historical rows can remain visible after status changes — read the dates carefully.

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