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JUDSON W KARLEN M.D.
NPI 1477681567
Orthopaedic Surgery - Pediatric Orthopaedic Surgery in Phoenix, AZ

Active since March 01, 2007PECOS Enrolled
1919 E THOMAS RD, MAIN BUILDING, PHOENIX, AZ 85016(602) 933-3033(602) 241-0292 Get Directions Write a Review

NPPES record last updated: January 22, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Judson W Karlen M.d. NPPES

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

JUDSON W KARLEN M.D. (NPI 1477681567) is an individual pediatric orthopaedic surgery provider in Phoenix, Arizona, licensed in Arizona (40705) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1477681567
Entity TypeIndividualMale
Primary Taxonomy207XP3100X
Provider Legal NameJUDSON W KARLENCredential: M.D.
Location Address1919 E THOMAS RD, MAIN BUILDINGPhoenix, AZ 85016-7710
Mailing Address1919 E Thomas Rd, Building 2108, Suite 101Phoenix, AZ 85016-7710 · (602) 512-8029 · Fax (602) 512-8161
Phone(602) 933-3033
Fax(602) 241-0292
Sole ProprietorNo
Enumeration DateMarch 1, 2007
Last NPPES UpdateJanuary 22, 2013
✔ NPI 1477681567 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Pediatric Orthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XP3100X
Licenses✔ Licensed in AZ · 40705✔ Licensed in CA · A95533
Definition
An orthopedic surgeon who has additional training and experience in diagnosing, treating and managing musculoskeletal problems in infants, children and adolescents. These may include limb and spine deformities (such as club foot, scoliosis); gait abnormalities (limping); bone and joint infections; broken bones.
1919 E THOMAS RD, Phoenix, AZ 85016
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Blue Cross Blue Shield of Arizona 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)

Judson W Karlen M.d. 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 Judson Karlen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Phoenix Children's Hospital
Same address
Pediatrics
1919 E THOMAS RD
Phoenix, AZ 85016
  • Reassigned Medicare billing, Arizona enrollment
  • 1,416 clinicians in this Medicare group
NPI 1922112044 (602) 933-1000
Northern Arizona Healthcare Corporation
121 mi
Family Medicine
1200 N. BEAVER STREET, ATTN: PAYER CREDENTIALING
Flagstaff, AZ 86001
  • Reassigned Medicare billing, Arizona enrollment
  • 552 clinicians in this Medicare group
NPI 1669914552 (928) 773-2546

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

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.

DR. TIMUR RAGHIB M.D.
Hospitalist
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-0777
MRS. MARIA T ESCOBAR CSP, RD
Dietitian, Registered
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (480) 440-2787
DR. AHMAR HUSAIN MD
Anesthesiology (Pediatric Anesthesiology)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-4660
MRS. SOLEE R COWLEY LCSW
Social Worker (Clinical)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-0414
MR. SEAN PATRICK BRADY DO
Anesthesiology (Pediatric Anesthesiology)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-4660
PRIYA PRASHER M.D.
Pediatrics
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-1900
DR. AMIT RAJARAM D.O.
Pediatrics
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-0198
LAURA GARDNER HAMANT
Pediatrics (Pediatric Gastroenterology)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-1000

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 Judson Karlen's NPI number?

The NPI number for Judson Karlen is 1477681567. It was assigned to this individual provider in the NPPES registry on March 1, 2007.

Where is Judson Karlen located?

Judson Karlen practices at 1919 E Thomas Rd Main Building, Phoenix, AZ 85016. The listed phone number is (602) 933-3033.

What is Judson Karlen's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Pediatric Orthopaedic Surgery, with taxonomy code 207XP3100X.

Is Judson Karlen enrolled in Medicare?

Yes. Judson Karlen is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Judson Karlen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Judson Karlen reassigns Medicare benefits to 2 organizations: Phoenix Children's Hospital (Phoenix, AZ) and Northern Arizona Healthcare Corporation (Flagstaff, AZ). 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 Judson Karlen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Judson Karlen accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona and Cigna HealthCare of Arizona, Inc list Judson Karlen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Judson Karlen was last updated on January 22, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.