EMMA WILLIAMS MD
NPI 1457972804
Internal Medicine - Hematology & Oncology in Madison, WI

Q: What is Emma Williams's NPI number?

The NPI number for Emma Williams is 1457972804. It was assigned to this individual provider in the NPPES registry on April 27, 2020.

Q: What is Emma Williams's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Emma Williams was last updated on August 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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 April 27, 2020PECOS Enrolled

600 HIGHLAND AVE, MADISON, WI 53792(608) 263-6400 Get Directions Write a Review

NPPES record last updated: August 27, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 10, 2023, Oct 20, 2022 (2 updates tracked since 2022).

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About Emma Williams Md NPPES

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

EMMA WILLIAMS MD (NPI 1457972804) is an individual hematology & oncology provider in Madison, Wisconsin, licensed in Wisconsin (77577-20) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS and is a graduate of University Of Michigan Medical School (2020).

NPPES Registry Identity

NPI1457972804

Entity TypeIndividualFemale

Primary Taxonomy207RH0003X

Provider Legal NameEMMA WILLIAMSCredential: MD

Location Address600 HIGHLAND AVEMadison, WI 53792-0001

Mailing Address600 Highland AveMadison, WI 53792-0001

Phone(608) 263-6400

Sole ProprietorNo

Medical School CMSUniversity Of Michigan Medical SchoolGraduated 2020

Enumeration DateApril 27, 2020

Last NPPES UpdateAugust 27, 20252 updates tracked since enumeration

NPPES CertifiedAugust 27, 2025

✔ NPI 1457972804 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in WI · 77577-20

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Also ListedInternal MedicineTaxonomy 207R00000X · License 77577-20 (WI)

Also ListedHospitalistTaxonomy 208M00000X · License 77577 (WI)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

600 HIGHLAND AVE, Madison, WI 53792

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Emma Williams Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7012331838

PECOS Enrollment IDI20230627003079

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.

Areas of Expertise CMS Part B claims 6

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.

245 services85 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.

63 services63 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.

58 services38 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.

50 services50 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.

21 services21 patients

Hospital discharge day management, 30 minutes or less 99238

Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53792 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

$163.24 typical visit price

range $53.90 – $163.24

Typical copayment $40.81 (range $13.47 – $40.81)

Most-billed visit code 99205

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.

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.

JASON ALAN CHRISTENSEN PHARMD

Pharmacist

600 HIGHLAND AVE, COMPLIANCE MAIL CODE 2433
MADISON, WI 53792

Dane County (608) 662-0817

LAURA JEAN KOPPLIN MD, PHD

Ophthalmology