What is Katherine Darr's NPI number?

Katherine Darr's National Provider Identifier (NPI) is 1568967792, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Katherine Darr's specialty?

Katherine Darr is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Katherine Darr located?

Katherine Darr's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.

What is Katherine Darr's phone number?

The practice phone number listed in the NPPES registry for Katherine Darr is (414) 955-6450.

Does Katherine Darr accept Medicare?

Katherine Darr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Katherine Darr's NPI active?

Yes — Katherine Darr's NPI (1568967792) is active in the NPPES registry as of the last update on 2025-07-30.

IndividualActiveAccepts Medicare

Katherine Darr, MD

NPI 1568967792 · Emergency Medicine Physician · Milwaukee, WI

Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Katherine Darr, MD is a Emergency Medicine Physician provider in Milwaukee, WI (NPI 1568967792).

Provider details

NPI number: 1568967792
Entity type: Individual
Primary specialty: Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: Yes
License: 036-159878 (IL)

Specialties & taxonomies

Emergency Medicine PhysicianPrimary207P00000XLicense 75346-20 (WI)
Allopathic & Osteopathic Physicians
Emergency Medicine Physician207P00000XLicense 036-159878 (IL)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(67/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
8 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
4 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
292 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Emergency Department Visit With High Level of Medical Decision Making99285	168	$193
Electrocardiogram (ecg) 1 to 3 Leads With Review By Physician Only93042	35	$7
Emergency Department Visit With Moderate Level of Medical Decision Making99284	34	$133
Critical Care, First 30-74 Minutes99291	34	$231
Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010	21	$9

Typical Medicare-allowed amounts for these services range $7–$231 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Naproxen	31	31
Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen	21	21
Cyclobenzaprine Hcl	17	17
Cefuroxime Axetilbrand: Cefuroxime	11	11

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Practice location

9200 W Wisconsin Ave

Milwaukee, WI 53226-3522

Phone: (414) 955-6450

Fax: (414) 955-0082

Street-level locationGet directions

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Mailing address