JOHN DE ROUEN MD INC
NPI 1346948155
Anesthesiology in Bakersfield, CA

Q: What is John De Rouen MD Inc's NPI number?

The NPI number for John De Rouen MD Inc is 1346948155. It was assigned to this organization in the NPPES registry on February 21, 2023.

Q: What is John De Rouen MD Inc's specialty?

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

Active since February 21, 2023

MILLENNIUM SURGERY CENTER, 3850 SAN DIMAS ST, BAKERSFIELD, CA 93301(661) 663-3700 Get Directions Write a Review

NPPES record last updated: December 15, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 15, 2025, Nov 5, 2025, Feb 21, 2023 (3 updates tracked since 2023).

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About John De Rouen Md Inc NPPES

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

JOHN DE ROUEN MD INC (NPI 1346948155) is a healthcare organization registered as an anesthesiology in Bakersfield, California and active in the NPI registry since February 2023. The organization lists John Derouen, President, as its authorized official.

NPPES Registry Identity

NPI1346948155

Entity TypeOrganization

Primary Taxonomy207L00000X

Legal Business NameJOHN DE ROUEN MD INC

Location AddressMILLENNIUM SURGERY CENTER, 3850 SAN DIMAS STBakersfield, CA 93301

Mailing AddressPo Box 2029Bakersfield, CA 93303-2029 · (661) 843-7616 · Fax (661) 760-6926

Phone(661) 663-3700

Organization SubpartNo

Authorized OfficialJohn DerouenPresident · (661) 204-8106

Enumeration DateFebruary 21, 2023

Last NPPES UpdateDecember 15, 20253 updates tracked since enumeration

NPPES CertifiedDecember 15, 2025

✔ NPI 1346948155 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

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.

MILLENNIUM SURGERY CENTER, Bakersfield, CA 93301

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Other Names 1

Other NameJohn De Rouen Md Inc

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John De Rouen Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to John De Rouen MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

John Derouen, M.D.

Anesthesiology

NPI 1851311492

3850 SAN DIMAS ST
Bakersfield, CA 93301

(661) 663-3700

✔ PECOS2.7 mi

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

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 John De Rouen MD Inc's NPI number?

The NPI number for John De Rouen MD Inc is 1346948155. It was assigned to this organization in the NPPES registry on February 21, 2023.

Where is John De Rouen MD Inc located?

John De Rouen MD Inc is located at Millennium Surgery Center 3850 San Dimas St, Bakersfield, CA 93301. The listed phone number is (661) 663-3700.

What is John De Rouen MD Inc's specialty?

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

Is John De Rouen MD Inc enrolled in Medicare?

Yes. John De Rouen MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through John De Rouen MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Anesthesiology) reassigns their Medicare billing to John De Rouen MD Inc. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for John De Rouen MD Inc was last updated on December 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.