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CHARLES YOO
NPI 1912360355
Internal Medicine in Milwaukee, WI

Active since April 02, 2016PECOS Enrolled
8701 W WATERTOWN PLANK RD, MILWAUKEE, WI 53226(414) 955-8296 Get Directions Write a Review

NPPES record last updated: October 8, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 8, 2021, Nov 13, 2019, Apr 2, 2016 (3 updates tracked since 2016).

About Charles Yoo NPPES

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

CHARLES YOO (NPI 1912360355) is an individual internal medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (70347) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Waukesha Memorial Hospital, and is a graduate of Pennsylvania State University College Of Medicine (2016).

NPPES Registry Identity

NPI1912360355
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameCHARLES YOO
Location Address8701 W WATERTOWN PLANK RDMilwaukee, WI 53226-3548
Mailing Address8701 W Watertown Plank RdMilwaukee, WI 53226-3548 · (414) 955-8296
Phone(414) 955-8296
Sole ProprietorNo
Medical School CMSPennsylvania State University College Of MedicineGraduated 2016
Enumeration DateApril 2, 2016
Last NPPES UpdateOctober 8, 20213 updates tracked since enumeration
NPPES CertifiedOctober 8, 2021
✔ NPI 1912360355 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WI · 70347
Definition
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.
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 70347 (WI)
8701 W WATERTOWN PLANK RD, Milwaukee, WI 53226
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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, Group Health Cooperative-SCW, Quartz.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Charles Yoo is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3476887118
PECOS Enrollment IDI20190806002484
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

8

Medicare enrollment records show Charles Yoo reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Medical College Of Wisconsin, Inc.
0.1 mi
Internal Medicine
8701 WATERTOWN PLANK RD
Milwaukee, WI 53226
  • Reassigned Medicare billing, Wisconsin enrollment
  • 3,983 clinicians in this Medicare group
NPI 1699720086 (414) 955-7101
Ascension Medical Group-Southeast Wisconsin Inc
6.9 mi
Internal Medicine
400 W RIVER WOODS PKWY
Glendale, WI 53212
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,343 clinicians in this Medicare group
NPI 1609881077 (414) 465-3000
Columbia St. Mary's Hospital Milwaukee Inc
7.4 mi
Multi-Specialty
2323 N LAKE DR
Milwaukee, WI 53211
  • Reassigned Medicare billing, Wisconsin enrollment
  • Medicare enrollment name: Columbia St Marys Hospital Milwaukee Inc
  • 856 clinicians in this Medicare group
NPI 1225071491 (414) 585-1000
Apogee Medical Group, Waukesha, S.C.
11 mi
Hospitalist
725 AMERICAN AVE
Waukesha, WI 53188
  • Reassigned Medicare billing, Wisconsin enrollment
  • Medicare enrollment name: Apogee Medical Group Waukesha Sc
  • 81 clinicians in this Medicare group
NPI 1528544608 (262) 928-5400
Beloit Health System, Inc
46 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
Ascension Medical Group-Fox Valley Wisconsin, Inc
82 mi
Multi-Specialty
101 MAIN ST
Neenah, WI 54956
  • Reassigned Medicare billing, Wisconsin enrollment
  • 444 clinicians in this Medicare group
NPI 1730126392 (920) 727-4200
The Monroe Clinic, Inc.
87 mi
Specialist
515 22ND AVE
Monroe, WI 53566
  • Reassigned Medicare billing, Wisconsin enrollment
  • 376 clinicians in this Medicare group
NPI 1386720548 (608) 324-2770
Spooner Health System, Inc.
271 mi
Critical Access
1280 CHANDLER DR
Spooner, WI 54801
  • Reassigned Medicare billing, Wisconsin enrollment
  • 25 clinicians in this Medicare group
NPI 1518982628 (715) 635-2111

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 5

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.

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.
266 services147 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.
117 services117 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
111 services110 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
30 services30 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.
29 services22 patients

Hospital Affiliations CMS Care Compare 3

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

Waukesha Memorial Hospital

Acute Care Hospitals · Waukesha, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520008
Location725 American AveWaukesha, WI 53188 · Waukesha County
Emergency services Birthing friendly

Oconomowoc Memorial Hospital

Acute Care Hospitals · Oconomowoc, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520062
Location791 E Summit AveOconomowoc, WI 53066 · Waukesha 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 53226 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
$123.69 typical visit price
range $53.90 – $163.24
Typical copayment $30.92 (range $13.47 – $40.81)
Most-billed visit code 99204
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
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

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

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers22 claims22 services$73.01 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. JAMES VAUGHAN M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Milwaukee County (414) 456-8296
DR. JACLYN VANDERWAL MD
Student in an Organized Health Care Education/Training Program
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Milwaukee County (414) 955-1833
DR. KEONA CHILDS M.D.
Emergency Medicine
8701 W WATERTOWN PLANK RD, MEDICAL COLLEGE OF WISCONSIN AFFILIATED HOSPITALS
MILWAUKEE, WI 53226
Milwaukee County (414) 955-4575
JAMES BENJAMIN MORONEY MD
Radiology (Vascular & Interventional Radiology)
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Milwaukee County (414) 456-6800
JORDAN ROBERT HANRAHAN
Student in an Organized Health Care Education/Training Program
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Milwaukee County (414) 955-4582
VERONICA QUINTERN PUJOL MD
Internal Medicine
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Milwaukee County (414) 955-8218
SARAH J LECAPITAINE MD
Student in an Organized Health Care Education/Training Program
8701 W WATERTOWN PLANK RD
WAUWATOSA, WI 53226
Milwaukee County (414) 955-8296
MRIGANK SHEKHAR GUPTA MD
Internal Medicine (Critical Care Medicine)
8701 W WATERTOWN PLANK RD
MILWAUKEE, WI 53226
Milwaukee County (414) 955-4578

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 Charles Yoo's NPI number?

The NPI number for Charles Yoo is 1912360355. It was assigned to this individual provider in the NPPES registry on April 2, 2016.

Where is Charles Yoo located?

Charles Yoo practices at 8701 W Watertown Plank Rd, Milwaukee, WI 53226. The listed phone number is (414) 955-8296.

What is Charles Yoo's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Charles Yoo enrolled in Medicare?

Yes. Charles Yoo is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Charles Yoo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Charles Yoo reassigns Medicare benefits to 8 organizations: The Medical College Of Wisconsin, Inc. (Milwaukee, WI), Ascension Medical Group-Southeast Wisconsin Inc (Glendale, WI), Columbia St. Mary's Hospital Milwaukee Inc (Milwaukee, WI), Apogee Medical Group, Waukesha, S.C. (Waukesha, WI), Beloit Health System, Inc (Darien, WI) and 3 more organizations, listed in the Medicare section above. 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 Charles Yoo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Charles Yoo accept?

Health plans from Anthem Blue Cross and Blue Shield, Group Health Cooperative-SCW and Quartz list Charles Yoo 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 Charles Yoo affiliated with any hospitals?

According to CMS data, Charles Yoo is affiliated with Waukesha Memorial Hospital, Oconomowoc Memorial Hospital and Beloit Health System.

When was this NPI record last updated?

The NPPES record for Charles Yoo was last updated on October 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.