DR. JOHN MIGUEL SIA (MD) – Internal Medicine Physician, NPI 1912958281

DR. JOHN MIGUEL SIA (MD) is a healthcare provider. based in Lincolnwood, Illinois. specializing in Internal Medicine Physician. They hold the professional credentials MD. They hold a License No. 036-083555 (IL). The NPI Number for DR. JOHN MIGUEL SIA (MD) is 1912958281

Main info

Male
Sole Proprietor
Name
DR. JOHN MIGUEL SIA (MD)
NPI
1912958281
Phone
(847) 208-7995
Address
6641 N DOWAGIAC AVE
Enumeration Date
12 May 2006
Last Update Date
5 October 2010
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

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Provider Addresses for DR. JOHN MIGUEL SIA (MD)

  • North Dowagiac Avenue, Forest Glen, Lincolnwood, Niles Township, Cook County, Illinois, 60646, United States

    LINCOLNWOOD, IL 607123021

    Phone: (847) 208-7995

    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)

No Open Payments data available for this provider.

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Medicare Enrollment & Revalidation

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

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2016-02-02

PECOS data refreshed: 2026-05-27

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Medicare Utilization (FFS)

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

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 60712)

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Frequently asked questions

Can I verify DR. JOHN MIGUEL SIA (MD) with an NPI only?
You can start verification with NPI 1912958281 for DR. JOHN MIGUEL SIA (MD), then check state licensing separately.
Does the file indicate DR. JOHN MIGUEL SIA (MD) is practicing under active NPI?
Directory data currently reports DR. JOHN MIGUEL SIA (MD) as active.
What is DR. JOHN MIGUEL SIA (MD) best known for clinically?
Directory data describes DR. JOHN MIGUEL SIA (MD) with Internal Medicine Physician. Clinical services aligned with this taxonomy classification.
What area does DR. JOHN MIGUEL SIA (MD) serve?
DR. JOHN MIGUEL SIA (MD)'s listing highlights Lincolnwood, Illinois; more addresses can appear in NPPES.
What does 'Individual Provider' mean on this profile?
Entity type tells you whether the number belongs to a person or an organization.

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