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STEPHEN A KLOTZ MD
NPI 1801995196
Internal Medicine - Infectious Disease in Tucson, AZ

Active since September 22, 2006PECOS Enrolled
97.64/100
CMS Quality Rating
1501 N CAMPBELL AVE, TUCSON, AZ 85724(520) 694-8888(520) 694-2565 Get Directions Write a Review

NPPES record last updated: January 11, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Stephen A Klotz Md NPPES

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

STEPHEN A KLOTZ MD (NPI 1801995196) is an individual infectious disease provider in Tucson, Arizona, licensed in Arizona (28776) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1801995196
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameSTEPHEN A KLOTZCredential: MD
Location Address1501 N CAMPBELL AVETucson, AZ 85724-0001
Mailing Address2701 E Elvira RdTucson, AZ 85706-7124 · (520) 874-7400 · Fax (520) 874-3425
Phone(520) 694-8888
Fax(520) 694-2565
Sole ProprietorNo
Enumeration DateSeptember 22, 2006
Last NPPES UpdateJanuary 11, 2008
✔ NPI 1801995196 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in AZ · 28776
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.
1501 N CAMPBELL AVE, Tucson, AZ 85724
Open in Google Maps ↗

Other Identifiers 3

Medicaid536740AZ
Medicare UPINB61483
Medicare PINZ64465AZ

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Stephen A Klotz 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 Reassignment

Medicare enrollment records show Stephen Klotz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Banner-University Medical Group
5.2 mi
Nutrition, Education
535 N WILMOT RD STE 101
Tucson, AZ 85711
  • Reassigned Medicare billing, Arizona enrollment
  • 1,514 clinicians in this Medicare group
NPI 1932708328 (520) 694-5437

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85724 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
$127.71 typical visit price
range $55.44 – $168.60
Typical copayment $31.92 (range $13.86 – $42.15)
Most-billed visit code 99204
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
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.

97.64/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality84.77
Promoting Interoperability98.67
Improvement Activities40

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.

MR. DOUGLAS FRANK LARSON PH.D.
Perfusionist
1501 N CAMPBELL AVE, SUITE 4402 ARIZONA HEALTH SCIENCE CENTER
TUCSON, AZ 85724
Pima County (520) 626-6339
MARTIN DEMANT
Pediatrics
1501 N CAMPBELL AVE
TUCSON, AZ 85724
Pima County (520) 626-6507
STEPHANIE RUNKE MD
Obstetrics & Gynecology
1501 N CAMPBELL AVE
TUCSON, AZ 85724
Pima County (520) 694-2530
ASHLEY AZIZI ASSADI MD
Pediatrics
1501 N CAMPBELL AVE
TUCSON, AZ 85724
Pima County (520) 626-7944
STUART HAMEROFF MD
Anesthesiology
1501 N CAMPBELL AVE
TUCSON, AZ 85724
Pima County (520) 694-8888
JOHN GUISTO MD
Emergency Medicine
1501 N CAMPBELL AVE
TUCSON, AZ 85724
Pima County (520) 874-3500
BALDASSARRE STEA MD, PHD
Radiology (Radiation Oncology)
1501 N CAMPBELL AVE
TUCSON, AZ 85724
Pima County (520) 694-7236
NAOMI E RANCE MD, PHD
Pathology (Neuropathology)
1501 N CAMPBELL AVE
TUCSON, AZ 85724
Pima County (520) 874-7400

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 Stephen Klotz's NPI number?

The NPI number for Stephen Klotz is 1801995196. It was assigned to this individual provider in the NPPES registry on September 22, 2006.

Where is Stephen Klotz located?

Stephen Klotz practices at 1501 N Campbell Ave, Tucson, AZ 85724. The listed phone number is (520) 694-8888.

What is Stephen Klotz's specialty?

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

Is Stephen Klotz enrolled in Medicare?

Yes. Stephen Klotz is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Stephen Klotz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Klotz reassigns Medicare benefits to Banner-University Medical Group (Tucson, AZ). The 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 Stephen Klotz'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 Stephen Klotz was last updated on January 11, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.