THOMAS H MAHN MD
NPI 1306812524
Internal Medicine - Interventional Cardiology in Milwaukee, WI

Q: What is Thomas Mahn's NPI number?

The NPI number for Thomas Mahn is 1306812524. It was assigned to this individual provider in the NPPES registry on February 27, 2006.

Q: What is Thomas Mahn's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Mahn was last updated on January 22, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 February 27, 2006PECOS Enrolled

82.39/100

CMS Quality Rating

3070 N 51ST ST, SUITE 106, MILWAUKEE, WI 53210(414) 442-9911(414) 442-8883 Get Directions Write a Review

NPPES record last updated: January 22, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Thomas H Mahn Md NPPES

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

THOMAS H MAHN MD (NPI 1306812524) is an individual interventional cardiology provider in Milwaukee, Wisconsin, licensed in Wisconsin (27029) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306812524

Entity TypeIndividualMale

Primary Taxonomy207RI0011X

Provider Legal NameTHOMAS H MAHNCredential: MD

Location Address3070 N 51ST ST, SUITE 106Milwaukee, WI 53210

Mailing Address3070 N 51st St, Suite 106Milwaukee, WI 53210 · (414) 442-9911 · Fax (414) 442-8883

Phone(414) 442-9911

Fax(414) 442-8883

Sole ProprietorNo

Enumeration DateFebruary 27, 2006

Last NPPES UpdateJanuary 22, 2018

✔ NPI 1306812524 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Interventional CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RI0011X

License✔ Licensed in WI · 27029

Definition

An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 27029 (WI)

3070 N 51ST ST, Milwaukee, WI 53210

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Other Identifiers 1

Medicaid30692300WI

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas H Mahn Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Thomas Mahn reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Wisconsin Health Fund

2.7 mi

Multi-Specialty

6200 W BLUEMOUND RD
Milwaukee, WI 53213

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

NPI 1497768659 (414) 771-5600

Ascension Medical Group-Southeast Wisconsin Inc

3.7 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

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 11

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.

254 services195 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

132 services129 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

115 services87 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

54 services54 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.

39 services38 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

36 services36 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

25 services25 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

18 services18 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

16 services16 patients

Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days 93244

A heart rhythm review involves monitoring your heart's electrical activity for more than 48 hours up to 7 days. Using a device called an external EKG, doctors can track your heartbeats to detect irregularities and help diagnose heart conditions.

11 services11 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.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53210 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

82.39/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

77.88

Promoting Interoperability

Improvement Activities

Cost

74.38

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.

JOSEPH C. BATTISTA MD SC

Surgery

3070 N 51ST ST
MILWAUKEE, WI 53210

Milwaukee County (414) 871-9500

MICHAEL R. SWEEN PA

Physician Assistant (Medical)

3070 N 51ST ST, #406
MILWAUKEE, WI 53210

Milwaukee County (414) 447-5040

RICHARD A STELIGA MD SC

Surgery

3070 N 51ST ST, STE 405
MILWAUKEE, WI 53210

Milwaukee County (414) 871-8888

EMAD BOTROS, M.D., S.C.

Internal Medicine (Pulmonary Disease)

3070 N 51ST ST, SUITE 402
MILWAUKEE, WI 53210

Milwaukee County (414) 871-2673

DR. MARTA VIVIANA THAKKAR M.D.

Pediatrics (Neonatal-Perinatal Medicine)

3070 N 51ST ST, STE P309
MILWAUKEE, WI 53210

Milwaukee County (414) 447-2674

ADVANCED HEALTHCARE, S.C.

Durable Medical Equipment & Medical Supplies

3070 N 51ST ST
MILWAUKEE, WI 53210

Milwaukee County (414) 873-7768

MARTA V THAKKAR, MD,SC

Pediatrics (Neonatal-Perinatal Medicine)

3070 N 51ST ST, P309
MILWAUKEE, WI 53210

Milwaukee County (414) 447-2764

JOSEPH C BATTISTA MD

Surgery

3070 N 51ST ST, #207
MILWAUKEE, WI 53210

Milwaukee County (414) 871-9500

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 Thomas Mahn's NPI number?

The NPI number for Thomas Mahn is 1306812524. It was assigned to this individual provider in the NPPES registry on February 27, 2006.

Where is Thomas Mahn located?

Thomas Mahn practices at 3070 N 51st St Suite 106, Milwaukee, WI 53210. The listed phone number is (414) 442-9911.

What is Thomas Mahn's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Is Thomas Mahn enrolled in Medicare?

Yes. Thomas Mahn is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Thomas Mahn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Mahn reassigns Medicare benefits to 2 organizations: Wisconsin Health Fund (Milwaukee, WI) and Ascension Medical Group-Southeast Wisconsin Inc (Glendale, 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 Thomas Mahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Thomas Mahn was last updated on January 22, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.