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Dr. Gregory L Ostrom , MD, PhD

Internal Medicine β€’ Elgin, IL

Active NPI 1376782870 Individual Practitioner Male Practitioner
Practice location in NPPES

370 Summit St, Suite 5
Elgin, IL 601203843

Call 8477410372 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

370 Summit St
Suite 5

Elgin, IL 601203843

Telephone 8477410372
Organization at the Same NPPES Address or Phone
Greater Family Health Facility NPI 1720142557

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Industry payments (Open Payments)

No Open Payments records are listed for this clinician for 2019–2025.

Guide: How to read an Open Payments record

NPI first issued

2009

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Elgin and Illinois

62 active clinicians are listed under Internal Medicine with a practice address in Elgin, IL (7,245 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Elgin

27.4% of these 62 clinicians have the CMS telehealth indicator.

69.4% of these 62 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Specialties & License Numbers Reported to NPPES

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES IL 036-054784

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Internal Medicine - Geriatric Medicine

NUCC Taxonomy Code: 207RG0300X

License # reported to NPPES IL 036-054784

An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

Preventive Medicine - Aerospace Medicine

NUCC Taxonomy Code: 2083A0100X

License # reported to NPPES IL 36-054784

Aerospace medicine focuses on the clinical care, research, and operational support of the health, safety, and performance of crewmembers and passengers of air and space vehicles, together with the support personnel who assist operation of such vehicles. This population often works and lives in remote, isolated, extreme, or enclosed environments under conditions of physical and psychological stress. Practitioners strive for an optimal human-machine match in occupational settings rich with environmental hazards and engineering countermeasures.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

9 listed
Candice Michelle Aphaivong , FNP-BC

Nurse Practitioner - Family

NPI 1124503602

Family Nurse Practitioner (Board Certified)

Dr. Nabanita Bhowmick , MD

Family Medicine - Adult Medicine

NPI 1134398506

Doctor of Medicine (M.D.)

Tracy Denne , PA

Physician Assistant

NPI 1780889006

Physician Assistant

Michelle Krause , APN, FNP-C

Nurse Practitioner - Family

NPI 1376890889

Advanced Practice Nurse, Family Nurse Practitioner (Certified)

Muchafara Maniki , NP

Nurse Practitioner - Family

NPI 1750777595

Nurse Practitioner

Thomas Mark

Physician Assistant

NPI 1255577649

Career & Practice History

NPI enumerated February 07, 2009.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

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NPI Administrative Meta

NPI Number: 1376782870
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 07, 2009
Last Update: February 07, 2009
Sole Proprietor: Yes

Other Internal Medicine Providers in Elgin

All Internal Medicine Providers in Elgin

Mailing Address

370 Summit St, Suite 5

Elgin, IL 601203843

Phone: 8477410372

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.