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CLAUDIA L ALTMANN MD
NPI 1386691756
Internal Medicine - Infectious Disease in Grafton, WI

Active since May 30, 2006PECOS Enrolled
975 PORT WASHINGTON RD, GRAFTON, WI 53024(262) 329-1000 Get Directions Write a Review

NPPES record last updated: September 27, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 28, 2023, Feb 1, 2023, Nov 19, 2021 (3 updates tracked since 2021).

About Claudia L Altmann Md NPPES

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

CLAUDIA L ALTMANN MD (NPI 1386691756) is an individual infectious disease provider in Grafton, Wisconsin, licensed in Wisconsin (27135-020) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1386691756
Entity TypeIndividualFemale
Primary Taxonomy207RI0200X
Provider Legal NameCLAUDIA L ALTMANNCredential: MD
Location Address975 PORT WASHINGTON RDGrafton, WI 53024-9204
Mailing Address3003 W Good Hope RdMilwaukee, WI 53209-2042 · (414) 352-3100
Phone(262) 329-1000
Sole ProprietorNo
Enumeration DateMay 30, 2006
Last NPPES UpdateSeptember 27, 20233 updates tracked since enumeration
NPPES CertifiedSeptember 27, 2023
✔ NPI 1386691756 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
Licenses✔ Licensed in WI · 27135-020✔ Licensed in IL · 036159003
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
975 PORT WASHINGTON RD, Grafton, WI 53024
Open in Google Maps ↗

Secondary Practice Locations 2

Location 112203 Corporate PkwyMequon, WI 53092-3388 · Phone (262) 387-8200 · Fax (262) 387-8271
Location 23314 Patriot CtHerrin, IL 62948-3782 · Phone (618) 993-1591 · Fax (618) 993-1595

Other Identifiers 3

Medicaid31483000WI
Other110028004WI · Railroad Medicare
OtherP00941425WV · Rr Medicare

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Claudia L Altmann 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

2

Medicare enrollment records show Claudia Altmann reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Aurora Advanced Healthcare, Inc.
12 mi
Family Medicine
3003 W GOOD HOPE RD
Milwaukee, WI 53209
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,615 clinicians in this Medicare group
NPI 1265629133 (414) 352-3100
Southern Illinois Medical Services, Nfp
392 mi
Internal Medicine
1239 E MAIN ST
Carbondale, IL 62901
  • Reassigned Medicare billing, Illinois enrollment
  • 702 clinicians in this Medicare group
NPI 1770656837 (618) 457-5200

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 2

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.

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.
22 services20 patients
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.
14 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53024 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.

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.

ANNE R. HARLEY P.T.
Physical Therapist
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-1000
MRS. MARGARET AIKINS KEUP APNP
Nurse Practitioner (Acute Care)
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-1000
DR. TYLER ANDREW FRISQUE PHARMD
Pharmacist
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-1600
CAITLIN DERENNE PA
Physician Assistant
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (360) 606-4292
DR. TIMOTHY JARON POW M.D.
Internal Medicine (Interventional Cardiology)
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-8150
REBEKAH L OTTE NP
Nurse Practitioner
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-8150
HAMID ABBAS AFSARI D.O.
Hospitalist
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-1000
JESSICA BROOKS RYAN SLP
Speech-Language Pathologist
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-2700

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 Claudia Altmann's NPI number?

The NPI number for Claudia Altmann is 1386691756. It was assigned to this individual provider in the NPPES registry on May 30, 2006.

Where is Claudia Altmann located?

Claudia Altmann practices at 975 Port Washington Rd, Grafton, WI 53024. The listed phone number is (262) 329-1000.

What is Claudia Altmann's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Claudia Altmann enrolled in Medicare?

Yes. Claudia Altmann is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Claudia Altmann's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Claudia Altmann reassigns Medicare benefits to 2 organizations: Aurora Advanced Healthcare, Inc. (Milwaukee, WI) and Southern Illinois Medical Services, Nfp (Carbondale, IL). 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 Claudia Altmann'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 Claudia Altmann was last updated on September 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.