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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JOSEPH M THORNHILL MD
NPI 1902802127
Anesthesiology in Saint Louis, MO

Active since June 22, 2005PECOS Enrolled
660 S EUCLID AVE, SAINT LOUIS, MO 63110(314) 747-3000 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Joseph M Thornhill Md NPPES

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

DR. JOSEPH M THORNHILL MD (NPI 1902802127) is an individual anesthesiology provider in Saint Louis, Missouri, licensed in Missouri (R7J07) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1902802127
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. JOSEPH M THORNHILLCredential: MD
Location Address660 S EUCLID AVESaint Louis, MO 63110-1010
Mailing Address660 S Euclid Ave, C B 8054Saint Louis, MO 63110-1010 · (314) 747-3000
Phone(314) 747-3000
Sole ProprietorNo
Enumeration DateJune 22, 2005
Last NPPES UpdateSeptember 29, 2026
✔ NPI 1902802127 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in MO · R7J07
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.
660 S EUCLID AVE, Saint Louis, MO 63110
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Other Identifiers 1

Medicaid101740045MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include HMO Louisiana.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. Joseph M Thornhill 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

4

Medicare enrollment records show Joseph Thornhill reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Commonwealth Anesthesia, Psc
319 mi
Anesthesiology
150 N EAGLE CREEK DR
Lexington, KY 40509
  • Reassigned Medicare billing, Kentucky enrollment
  • 462 clinicians in this Medicare group
NPI 1437196300 (859) 967-5000
Zephyr Anesthesia, LLC
590 mi
Anesthesiology
694 BELLE TERRE BLVD
La Place, LA 70068
  • Reassigned Medicare billing, Louisiana enrollment
  • 482 clinicians in this Medicare group
NPI 1891087458 (504) 813-3101
Childrens Hospital Anesthesia Corporation
602 mi
Anesthesiology
200 HENRY CLAY AVE
New Orleans, LA 70118
  • Reassigned Medicare billing, Louisiana enrollment
  • 519 clinicians in this Medicare group
NPI 1649362740 (504) 896-9456
Youngs Professional Services LLC
602 mi
Nurse Anesthetist, Certified Registered
1100 ANDRE ST, SUITE 300
New Iberia, LA 70563
  • Reassigned Medicare billing, Louisiana enrollment
  • 470 clinicians in this Medicare group
NPI 1922178599 (337) 364-9225

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.

WUSM BJC ACO PROVIDERS
Clinic/Center (Multi-Specialty)
660 S EUCLID AVE, CAMPUS BOX 8081
SAINT LOUIS, MO 63110
St. Louis City (314) 273-0770
ANDREA YUE-EN SUN MD
Student in an Organized Health Care Education/Training Program
660 S EUCLID AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 362-8065
MEGAN CLAIRE KERNS MD
Student in an Organized Health Care Education/Training Program
660 S EUCLID AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 362-8065
WASHINGTON UNIVERSITY
Clinic/Center (Multi-Specialty)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 362-5184
SARAH B. ASCHKENASI MD
Pediatrics
660 S EUCLID AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 286-1264
DR. BENJAMIN HARRIS TIMMINS M.D.
Plastic Surgery
660 S EUCLID AVE
SAINT LOUIS, MO 63110
St. Louis City (435) 764-4932
ANDREA NAES NP
Nurse Practitioner
660 S EUCLID AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 362-3706
DR. JONATHAN M GREEN MD
Internal Medicine (Pulmonary Disease)
660 S EUCLID AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 454-8917

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 Joseph Thornhill's NPI number?

The NPI number for Joseph Thornhill is 1902802127. It was assigned to this individual provider in the NPPES registry on June 22, 2005.

Where is Joseph Thornhill located?

Joseph Thornhill practices at 660 S Euclid Ave, Saint Louis, MO 63110. The listed phone number is (314) 747-3000.

What is Joseph Thornhill's specialty?

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

Is Joseph Thornhill enrolled in Medicare?

Yes. Joseph Thornhill is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Joseph Thornhill's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Thornhill reassigns Medicare benefits to 4 organizations: Commonwealth Anesthesia, Psc (Lexington, KY), Zephyr Anesthesia, LLC (La Place, LA), Childrens Hospital Anesthesia Corporation (New Orleans, LA) and Youngs Professional Services LLC (New Iberia, LA). 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 Joseph Thornhill's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Joseph Thornhill accept?

Health plans from HMO Louisiana list Joseph Thornhill 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 Joseph Thornhill was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days 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.