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Dr. Keith So , MD

Internal Medicine β€’ Chicago, IL

Active NPI 1437218682 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

3860 W Ogden Ave
Chicago, IL 606232460

Call 8725883000 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

3860 W Ogden Ave

Chicago, IL 606232460

Telephone 8725883000
Fax 8725883001
Organization at the Same NPPES Address or Phone
Lawndale Christian Health Center Facility NPI 1245289214

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

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Lawndale Christian Health Center. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

1993

30-day fills

3,234 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$148,252 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $19.38 in 2023

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2023.

Guide: How to read an Open Payments record

Years since graduation

33 years (graduated 1993)

CMS Doctors and Clinicians data list 1993 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2006

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.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

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

Enrolled in Medicare (PECOS)

Dr. So has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. So as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Chicago and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

More Part D prescriptions than 65% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,269 clinicians with data). Median for this group: 474. Middle half: 74 to 2,358.

Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: 1,030. Middle half: 99 to 4,658.

Part D drug cost

A higher Part D drug cost than 65% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,269 clinicians with data). Median for this group: $40,678. Middle half: $1,543 to $232,098.

Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: $78,716. Middle half: $2,604 to $371,507.

2,870 active clinicians are listed under Internal Medicine with a practice address in Chicago, IL (7,245 in Illinois).

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

Telehealth indicator in Chicago

13.3% of these 2,870 clinicians have the CMS telehealth indicator.

38.5% of these 2,870 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments Β· Program Year 2023

Program year 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $19.38.

Manufacturer Payment Nature Product Type Amount ($)
Organon LLC
Food and Beverage
In-kind items and services
NEXPLANON General $19.38

Source: CMS Open Payments, program year 2023, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D Β· Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 132 10,499 $958.57 46
Hydrochlorothiazide Hydrochlorothiazide 106 7,598 $307.64 34
Metformin Hcl Metformin Hcl 99 7,408 $445.44 29
Amlodipine Besylate Amlodipine Besylate 75 5,199 $125.18 22
Lisinopril Lisinopril 48 3,681 $233.52 17
Losartan Potassium Losartan Potassium 46 3,990 $214.16 18
Furosemide Furosemide 44 2,809 $169.40 20
Metoprolol Succinate Metoprolol Succinate 39 2,314 $684.46 11
Tradjenta Linagliptin 39 3,150 $47,576.10 18
Nifedipine Er Nifedipine 38 3,022 $1,272.53 12
Hydralazine Hcl Hydralazine Hcl 38 1,560 $557.62 β€”
Famotidine Famotidine 34 1,959 $2,413.83 13
Albuterol Sulfate Hfa Albuterol Sulfate 31 651 $1,122.47 12
Basaglar Kwikpen U-100 Insulin Glargine,hum.Rec.Anlog 30 1,459 $8,706.75 11
Allopurinol Allopurinol 29 2,610 $121.89 11
Ultra-Fine Mini Pen Needle Pen Needle, Diabetic 28 1,613 $2,901.18 11
Sertraline Hcl Sertraline Hcl 27 1,290 $74.65 β€”
Metformin Hcl Er Metformin Hcl 25 1,494 $53.86 β€”
Lantus Solostar Insulin Glargine,hum.Rec.Anlog 23 1,398 $2,842.59 β€”
Benazepril Hcl Benazepril Hcl 23 1,920 $190.78 β€”
Alendronate Sodium Alendronate Sodium 22 1,770 $210.96 β€”
Novolog Flexpen Insulin Aspart 22 917 $2,491.12 β€”
Finasteride Finasteride 21 1,290 $80.92 β€”
Pravastatin Sodium Pravastatin Sodium 21 1,830 $165.59 β€”
Carvedilol Carvedilol 20 1,680 $117.71 β€”

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES IL 036-102425

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.

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

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
036102425 (IL)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20070206000294

Enrollment State Jurisdiction

IL

PECOS Control ID

0042212938

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Lawndale Christian Health Center

3860 W Ogden Ave, Chicago, IL 606232460

Phone: 8725883000

Clinicians Sharing This Practice Address or Phone

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

40 listed
Jeneson Abraham , PA

Physician Assistant - Medical

NPI 1013975218

Physician Assistant

Dr. Lars Armainsson , MD

Internal Medicine

NPI 1336259514

Doctor of Medicine (M.D.)

Teneshia Auston , APRN

Nurse Practitioner - Family

NPI 1265100705

Advanced Practice Registered Nurse

NPI 1770520959

Doctor of Medicine (M.D.)

NPI 1801805437

Doctor of Medicine (M.D.)

Elizabeth Bauer , PA

Physician Assistant - Medical

NPI 1477851319

Physician Assistant

Career & Practice History

NPI enumerated December 06, 2006.

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.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1437218682
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: December 06, 2006
Last Update: February 16, 2016
Sole Proprietor: No

Other Internal Medicine Providers in Chicago

All Internal Medicine Providers in Chicago

Mailing Address

3860 W Ogden Ave

Chicago, IL 606232460

Phone: 8725883000

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.