JOHN L BAKER (OD) – Optometrist, NPI 1447243936

JOHN L BAKER (OD) is a healthcare provider. based in Chicago, Illinois. specializing in OPTOMETRY. They hold the professional credentials OD. They hold a License No. 046008191 (IL). The NPI Number for JOHN L BAKER (OD) is 1447243936

Main info

Male
42 Years Of Experience
Accepts Medicare Assignment
Name
JOHN L BAKER (OD)
NPI
1447243936
Phone
(630) 743-4500
Address
3241 S MICHIGAN AVE
Enumeration Date
30 August 2005
Last Update Date
6 October 2025

Doctor Profile

Medical School Name
PENNSYLVANIA COLLEGE OF OPTOMETRY
Secondary Phone
6307434500
Graduation Year
1984 (42 years ago)
PAC ID
2567500499
Group Practice PAC ID
6305734773
Professional Enrollment ID
I20091112000436
Address ID
IL605155430DO3450XRDXX300
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience64
Completeness85
Years active:20State licenses:1Digital endpointsOther names

1,715 OPTOMETRY in IL

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Provider Addresses for JOHN L BAKER (OD)

  • Illinois College of Optometry, 3241, South Michigan Avenue, Bronzeville, Douglas, Chicago, Cook County, Illinois, 60616, United States

    CHICAGO, IL 606164201

    Phone: (630) 743-4500

    Fax: (630) 743-4537

    Type: Location

  • 3450 LACEY RD

    DOWNERS GROVE, IL 605155430

    Phone: (630) 743-4500

    Fax: (630) 743-4537

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 1 Open Payments records for all available years, with a total value of $34.

Total Amount is formed as General ($34) + Research ($0) + Ownership ($0) = $34.

Last reported payment date: 2023-05-17 • Largest payer in this snapshot: ABBVIE INC. ($34).

Total Amount

$34

General + Research + Ownership

Payments

1

Total payment records

General Amount

$34

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2023-05-17

Latest reported date

Top Companies

Largest payers in this snapshot

CompanyAmount
ABBVIE INC.$34
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.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2009-11-12

PECOS data refreshed: 2026-05-27

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
I20091112000436IOptometryILTBD

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
92014Established patient complete exam of visual system3636$0
View full utilization report →

Insurance plans in this area (ZIP 60616)

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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: 6305734773View full group profile
NameSpecialtyState
Physician AssistantIL
Family PracticeIL
O P T O M E T R YMI
O P T O M E T R YIL
-AZ
Qualified Speech Language PathologistAZ
O P T O M E T R YWI
Qualified Speech Language PathologistIL
O P T O M E T R YIL
O P T O M E T R YNM

Reviews

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Frequently asked questions

Can I verify JOHN L BAKER (OD) with an NPI only?
You can start verification with NPI 1447243936 for JOHN L BAKER (OD), then check state licensing separately.
Is JOHN L BAKER (OD) still practicing?
JOHN L BAKER (OD) is currently listed as active in the public NPI registry.
What is JOHN L BAKER (OD) best known for clinically?
Directory data describes JOHN L BAKER (OD) with Optometrist. Clinical services aligned with this taxonomy classification.
Where is JOHN L BAKER (OD) based?
JOHN L BAKER (OD) is tied to Chicago, Illinois in the data we show; additional addresses may exist on the full record.
Is the information about JOHN L BAKER (OD) up to date?
Data updates when providers file changes in NPPES — treat critical facts as "verify if unsure."

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