What is Joanna Buck's NPI number?

Joanna Buck's National Provider Identifier (NPI) is 1912403700, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Joanna Buck's specialty?

Joanna Buck is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).

Where is Joanna Buck located?

Joanna Buck's practice location on file with NPPES is 721 American Ave Ste 501, Waukesha, WI 53188-5071.

What is Joanna Buck's phone number?

The practice phone number listed in the NPPES registry for Joanna Buck is (262) 928-4036.

Does Joanna Buck accept Medicare?

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

Is Joanna Buck's NPI active?

Yes — Joanna Buck's NPI (1912403700) is active in the NPPES registry as of the last update on 2022-08-04.

IndividualActiveAccepts Medicare

Joanna Buck, MD

NPI 1912403700 · Psychiatry Physician · Waukesha, WI

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

Joanna Buck, MD is a Psychiatry Physician provider in Waukesha, WI (NPI 1912403700).

Provider details

NPI number: 1912403700
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense 71731-20 (WI)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Profile Score

Established profile(52/100 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
83% of core fields populated
Practice footprint17% of score
2 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
148 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)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	148	$114

Typical Medicare-allowed amounts for these services range $114–$114 (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 · 55 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Clonazepam	219	36
Lamotrigine	190	40
Sertraline Hcl	161	33
Duloxetine Hcl	158	33
Quetiapine Fumarate	158	26
Buspirone Hcl	149	30
Bupropion Hclbrand: Bupropion Xl	137

Practice location

721 American Ave Ste 501

Waukesha, WI 53188-5071

Phone: (262) 928-4036

Street-level locationGet directions

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Mailing address