DR. KARAMBIR SINGH KHALSA
NPI 1669008868
Psychologist - Clinical in Flagstaff, AZ

Q: What is Karambir Khalsa's NPI number?

The NPI number for Karambir Khalsa is 1669008868. It was assigned to this individual provider in the NPPES registry on March 19, 2020. The provider is also known as Mr. William Stanley Mueller.

Q: What is Karambir Khalsa's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Karambir Khalsa was last updated on May 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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 March 19, 2020PECOS Enrolled

1120 W UNIVERSITY AVE STE 200, FLAGSTAFF, AZ 86001(928) 985-8550 Get Directions Write a Review

NPPES record last updated: May 17, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 17, 2026, Aug 8, 2023, Jul 18, 2023 and 2 more (5 updates tracked since 2020).

On this page

About Dr. Karambir Singh Khalsa NPPES

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

DR. KARAMBIR SINGH KHALSA (NPI 1669008868) is an individual clinical provider in Flagstaff, Arizona, licensed in Arizona (PSY-005603) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, maintains a secondary practice location in Oro Valley, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1669008868

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. KARAMBIR SINGH KHALSA

Location Address1120 W UNIVERSITY AVE STE 200Flagstaff, AZ 86001-2879

Mailing Address2700 S Woodlands Village Blvd, Ste 300 Pmb 295Flagstaff, AZ 86001 · (928) 235-4690

Phone(928) 985-8550

Sole ProprietorYes

Medical School CMSOtherGraduated 2021

Enumeration DateMarch 19, 2020

Last NPPES UpdateMay 17, 20265 updates tracked since enumeration

NPPES CertifiedMay 17, 2026

✔ NPI 1669008868 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

Licenses✔ Licensed in AZ · PSY-005603✔ Licensed in CO · NLC.0107000

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

1120 W UNIVERSITY AVE STE 200, Flagstaff, AZ 86001

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Other Names 1

Former Name (1)Mr. William Stanley Mueller

Secondary Practice Location 1

Location 11486 East Innovation Park Drive, STE 100Oro Valley, AZ 85755 · Phone (928) 235-4690

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Karambir Singh Khalsa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1254803760

PECOS Enrollment IDI20260616002690

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 Karambir Khalsa reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mental Health Specialty Group PA

1,837 mi

Mental Health

110 N CORCORAN ST FL 5
Durham, NC 27701

Reassigned Medicare billing, Arizona enrollment
99 clinicians in this Medicare group

NPI 1801472634 (323) 205-7088

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 86001 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

$168.60 typical visit price

range $55.44 – $168.60

Typical copayment $42.15 (range $13.86 – $42.15)

Most-billed visit code 99205

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.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROBIN RACHELLE OSULLIVAN PSYD

Psychologist (Clinical)