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TIMOTHY RYAN WALSH
NPI 1407290588
Anesthesiology in Orange, CA

Active since April 19, 2013PECOS EnrolledAccepts Medicare Assignment
91.89/100
CMS Quality Rating
101 THE CITY DR S, ORANGE, CA 92868(714) 456-8888 Get Directions Write a Review

NPPES record last updated: August 26, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 26, 2026, Oct 5, 2022, Jul 21, 2022 and 1 more (4 updates tracked since 2017).

About Timothy Ryan Walsh NPPES

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

TIMOTHY RYAN WALSH (NPI 1407290588) is an individual anesthesiology provider in Orange, California, licensed in California (A135190) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with University Of Kansas Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1407290588
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameTIMOTHY RYAN WALSH
Location Address101 THE CITY DR SOrange, CA 92868-3201
Mailing Address9000 W Wisconsin AveMilwaukee, WI 53226-4874 · (414) 805-6100 · Fax (414) 805-6147
Phone(714) 456-8888
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 2013
Enumeration DateApril 19, 2013
Last NPPES UpdateAugust 26, 20264 updates tracked since enumeration
NPPES CertifiedAugust 26, 2026
✔ NPI 1407290588 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in CA · A135190✔ Licensed in WI · 81028
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedAnesthesiology · Pediatric AnesthesiologyTaxonomy 207LP3000X · License A135190 (CA), 81028 (WI)
101 THE CITY DR S, Orange, CA 92868
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Secondary Practice Locations 2

Location 19200 W Wisconsin AveMilwaukee, WI 53226-3522 · Phone (414) 805-8700 · Fax (414) 259-1522
Location 29000 W Wisconsin AveMilwaukee, WI 53226-4874 · Phone (414) 805-6100 · Fax (414) 805-6147

Other Identifiers 1

Medicaid1407290588WI

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Timothy Ryan Walsh is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3971875436
PECOS Enrollment IDI20170817001778
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 Timothy Walsh reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regents Of The University Of
0.3 mi
Anesthesiology
101 THE CITY DR SOUTH
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 420 clinicians in this Medicare group
NPI 1487602546 (714) 456-8068
Kansas University Physicians Inc
1,343 mi
Internal Medicine
4000 CAMBRIDGE ST
Kansas City, KS 66160
  • Reassigned Medicare billing, Kansas enrollment
  • 2,139 clinicians in this Medicare group
NPI 1003858333 (913) 588-2527

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 7

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.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
31 services31 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
20 services20 patients
Anesthesia for other procedure on neck area (1 year or older) 00320
Anesthesia for a procedure on the neck area is a medical service provided to ensure you remain comfortable and pain-free during the operation. It involves administering medication to numb the neck region or to induce sleep. The method chosen depends on the specific procedure and your overall health.
19 services19 patients
Anesthesia for other procedure on skin, muscles, or nerves of head, neck, and upper back 00300
Anesthesia for procedures on skin, muscles, or nerves of the head, neck, and upper back involves using medication to numb the area or make you unconscious during the procedure. This ensures you don't feel pain or discomfort. It's safe and monitored by professionals.
15 services15 patients
Anesthesia for other procedure on skin of arms, legs, and front body 00400
Anesthesia for procedures on the skin of your arms, legs, and front body is a service that numbs the area being treated. This ensures you don't feel pain during procedures like biopsies, stitches, or minor surgeries. It's administered through a small injection or a topical cream.
15 services15 patients
Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
12 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Kansas Hospital

Acute Care Hospitals · Kansas City, KS
5/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number170040
Location4000 Cambridge StreetKansas City, KS 66160 · Wyandotte County
Emergency services Birthing friendly

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.

91.89/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality75.17
Promoting Interoperability100
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.

DR. ANKIT BHUPENDRA PATEL D.O.
Radiology (Diagnostic Radiology)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-5113
DR. LAURA CATHERINE SKOCZYLAS MD
Obstetrics & Gynecology
101 THE CITY DR S, BUILDING 56, DEPARTMENT OF OB/GYN
ORANGE, CA 92868
Orange County (714) 456-8224
MICHAEL CHENG DO
Internal Medicine (Rheumatology)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-7110
AESTHETIC AND PLASTIC SURGERY INSTITUTE
Plastic Surgery
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-2986
JOSEPH VILLARREAL M.D.
Emergency Medicine
101 THE CITY DR S, BUILDING 1A, ROOM 1009
ORANGE, CA 92868
Orange County (714) 456-5239
DEMI TRAN
Psychiatry & Neurology (Neurology)
101 THE CITY DR S, CITY TOWER, SUITE 400
ORANGE, CA 92868
Orange County (171) 456-6693
DR. ISABEL CARLTON CLARK M.D.
Surgery (Trauma Surgery)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-7890
DYLAN LUKATO
Emergency Medicine
101 THE CITY DR S
ORANGE, CA 92868
Orange County (415) 218-8041

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 Timothy Walsh's NPI number?

The NPI number for Timothy Walsh is 1407290588. It was assigned to this individual provider in the NPPES registry on April 19, 2013.

Where is Timothy Walsh located?

Timothy Walsh practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-8888.

What is Timothy Walsh's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Timothy Walsh enrolled in Medicare?

Yes. Timothy Walsh is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Timothy Walsh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Walsh reassigns Medicare benefits to 2 organizations: Regents Of The University Of (Orange, CA) and Kansas University Physicians Inc (Kansas City, KS). 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 Timothy Walsh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Timothy Walsh affiliated with any hospitals?

According to CMS data, Timothy Walsh is affiliated with University Of Kansas Hospital.

When was this NPI record last updated?

The NPPES record for Timothy Walsh was last updated on August 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.