DR. DANIEL DAEYOL SO M.D.
NPI 1023167004
Internal Medicine - Endocrinology, Diabetes & Metabolism in Arlington Heights, IL

Q: What is Daniel So's NPI number?

The NPI number for Daniel So is 1023167004. It was assigned to this individual provider in the NPPES registry on January 9, 2007.

Q: What is Daniel So's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Q: When was this NPI record last updated?

The NPPES record for Daniel So was last updated on April 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 09, 2007PECOS EnrolledAccepts Medicare Assignment

2101 S ARLINGTON HEIGHTS RD, 111, ARLINGTON HEIGHTS, IL 60005(847) 228-3200(847) 228-3740 Get Directions Write a Review

NPPES record last updated: April 28, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Dr. Daniel Daeyol So M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DANIEL DAEYOL SO M.D. (NPI 1023167004) is an individual endocrinology, diabetes & metabolism provider in Arlington Heights, Illinois, licensed in Illinois (036107882) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Central Dupage Hospital, and is a graduate of Other (1993).

NPPES Registry Identity

NPI1023167004

Entity TypeIndividualMale

Primary Taxonomy207RE0101X

Provider Legal NameDR. DANIEL DAEYOL SOCredential: M.D.

Location Address2101 S ARLINGTON HEIGHTS RD, 111Arlington Heights, IL 60005-4185

Mailing Address2101 S Arlington Heights Rd, 111Arlington Heights, IL 60005-4185 · (847) 228-3200 · Fax (847) 228-3740

Phone(847) 228-3200

Fax(847) 228-3740

Sole ProprietorNo

Medical School CMSOtherGraduated 1993

Enumeration DateJanuary 9, 2007

Last NPPES UpdateApril 28, 2023

NPPES CertifiedApril 28, 2023

✔ NPI 1023167004 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in IL · 036107882

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

2101 S ARLINGTON HEIGHTS RD, Arlington Heights, IL 60005

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Dean Health Plan, Group Health Cooperative-SCW.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Daniel Daeyol So M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2860437886

PECOS Enrollment IDI20101111000740, I20220126002533

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Daniel So reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Suburban Endocrinology & Diabetes

0.1 mi

Endocrinology, Diabetes & Metabolism

2101 S ARLINGTON HEIGHTS RD, STE. 111
Arlington Heights, IL 60005

Reassigned Medicare billing, Illinois enrollment
12 clinicians in this Medicare group

NPI 1780879866 (847) 228-3200

Beloit Health System, Inc

54 mi

Family Medicine

300 N WALWORTH ST
Darien, WI 53114

Reassigned Medicare billing, Wisconsin enrollment
194 clinicians in this Medicare group

NPI 1265575195 (262) 882-1151

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

1,215 services668 patients

Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251

This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.

336 services180 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

323 services48 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

136 services121 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

79 services77 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

56 services56 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

55 services33 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

50 services43 patients

Ultrasound scan of head and neck soft tissue 76536

An ultrasound scan of the head and neck soft tissue is a non-invasive procedure that uses sound waves to create images of the soft tissues in these areas. It helps identify any abnormalities or issues, such as tumors, cysts, or infections. It's painless and doesn't involve radiation.

34 services34 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

24 services20 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

21 services21 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

17 services17 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140242

Location25 North Winfield RoadWinfield, IL 60190 · Du Page County

Emergency services Birthing friendly

Northwest Community Hospital 1

Acute Care Hospitals · Arlington Heights, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140252

Location800 W Central RoadArlington Heights, IL 60005 · Cook County

Emergency services Birthing friendly

St Alexius Medical Center

Acute Care Hospitals · Hoffman Estates, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140290

Location1555 N Barrington RdHoffman Estates, IL 60169 · Cook County

Emergency services Birthing friendly

Advocate Good Shepherd Hospital

Acute Care Hospitals · Barrington, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140291

Location450 West Highway 22Barrington, IL 60010 · Lake County

Emergency services Birthing friendly

Beloit Health System

Acute Care Hospitals · Beloit, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520100

Location1969 W Hart RdBeloit, WI 53511 · Rock County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60005 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 11

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supplies for maintenance of insulin infusion catheter, per week A4224

DME-Other DME · category DE017N

8 suppliers104 claims1,286 services$17.97 avg. paid by Medicare

Supplies for external insulin infusion pump, syringe type cartridge, sterile, each A4225

DME-Other DME · category DE017N

9 suppliers99 claims3,066 services$2.32 avg. paid by Medicare

Supply allowance for adjunctive continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service A4238

DME-Medical/Surgical Supplies · category DA000N

3 suppliers39 claims39 services$173.44 avg. paid by Medicare

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

127 suppliers542 claims2,601 services$6.01 avg. paid by Medicare

Normal, low and high calibrator solution / chips A4256

DME-Other DME · category DE000N

5 suppliers29 claims29 services$2.83 avg. paid by Medicare

Spring-powered device for lancet, each A4258

DME-Other DME · category DE000N

4 suppliers13 claims13 services$1.84 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. LUIS FERNANDO SORUCO M.D.

Internal Medicine (Endocrinology, Diabetes & Metabolism)

2101 S ARLINGTON HEIGHTS RD, 111
ARLINGTON HEIGHTS, IL 60005

Cook County (847) 228-3200

DR. PAUL MARSIGLIA D.O.

Anesthesiology (Pain Medicine)

2101 S ARLINGTON HEIGHTS RD, SUITE 165
ARLINGTON HEIGHTS, IL 60005

Cook County (847) 593-6800

DR. KEVIN JOSEPH CURTIN D.D.S.

Dentist (General Practice)

2101 S ARLINGTON HEIGHTS RD, SUITE 117
ARLINGTON HEIGHTS, IL 60005

Cook County (847) 357-3899

WILLIAM A MORAN MD

Internal Medicine

2101 S ARLINGTON HEIGHTS RD, SUITE 108
ARLINGTON HEIGHTS, IL 60005

Cook County (224) 404-6500

GAIL SOMMERFELD

Dietitian, Registered

2101 S ARLINGTON HEIGHTS RD
ARLINGTON HEIGHTS, IL 60005

Cook County (847) 228-3200

DR. MARIO HIM MING CHAN M.D.

Internal Medicine (Endocrinology, Diabetes & Metabolism)

2101 S ARLINGTON HEIGHTS RD, 111
ARLINGTON HEIGHTS, IL 60005

Cook County (847) 228-3200

YU YAN M.D.

Internal Medicine

2101 S ARLINGTON HEIGHTS RD, SUITE 108
ARLINGTON HEIGHTS, IL 60005

Cook County (224) 404-6500

MARIANNA TSARAN MD SC

Specialist

2101 S ARLINGTON HEIGHTS RD, 155
ARLINGTON HEIGHTS, IL 60005

Cook County (847) 439-5359

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Daniel So's NPI number?

The NPI number for Daniel So is 1023167004. It was assigned to this individual provider in the NPPES registry on January 9, 2007.

Where is Daniel So located?

Daniel So practices at 2101 S Arlington Heights Rd 111, Arlington Heights, IL 60005. The listed phone number is (847) 228-3200.

What is Daniel So's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Daniel So enrolled in Medicare?

Yes. Daniel So is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Daniel So's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Daniel So reassigns Medicare benefits to 2 organizations: Suburban Endocrinology & Diabetes (Arlington Heights, IL) and Beloit Health System, Inc (Darien, WI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Daniel So's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Daniel So accept?

Health plans from Anthem Blue Cross and Blue Shield, Dean Health Plan and Group Health Cooperative-SCW list Daniel So as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Daniel So affiliated with any hospitals?

According to CMS data, Daniel So is affiliated with Northwestern Medicine Central Dupage Hospital, Northwest Community Hospital 1, St Alexius Medical Center, Advocate Good Shepherd Hospital and Beloit Health System.

When was this NPI record last updated?

The NPPES record for Daniel So was last updated on April 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.