John Attenello MD v. Aetna Life Insurance Company

District Court, C.D. California·Decided September 16, 2025·No. 2:25-cv-04869·Unknown

Opinion

JOHN ATTENELLO MD, Case No. 2:25-cv-04869-WLH-E Plaintiff, ORDER RE PLAINTIFF’S MOTION TO REMAND AND DEFENDANT v. A [1 E 6, T 1 N 5 A ] ’S MOTION TO DISMISS

COMPANY,

Defendant.

The Court is in receipt of Plaintiff’s Motion to Remand (the “MTR”) (MTR, Docket No. 16), as well as Defendant’s Motion to Dismiss (the “MTD”). (MTD, Docket No. 15). Prior to oral argument, which was set for September 12, 2025, all parties submitted on the Court’s tentative order, which is now adopted as a final order. For the following reasons, the Court DENIES the Motion to Remand and GRANTS the Motion to Dismiss, dismissing the action in its entirety without prejudice and with leave to amend. // // // Plaintiff John Attenello, MD (“Plaintiff” or “Plaintiff Attenello”) originally filed the present action against Defendant Aetna Life Insurance Company1 (“Defendant” or “Defendant Aetna”) in Small Claims Court in the Superior Court of Los Angeles County on April 25, 2025. (Notice of Removal, Docket No. 1-1, Ex. A (the “Claim”) at 1). Defendant was served with the Claim on April 29, 2025. (Notice of Removal, Docket No. 1-2, Ex. B (“Service Transmittal”) at 1). The Claim alleges Defendant owes Plaintiff $2,5002 for “underpaid emergent/post-stabilization emergent care for patient based on state common law implied in law, implied and verbal contract, unjust enrichment and detrimental reliance.” (Claim at 1). As support for his Claim, Plaintiff attached relevant the treatment charge breakdown, appointment notes for the patient at issue (the “Patient”), and an invoice of Defendant Aetna’s payment for the treatment. (Id. at 7-14). The invoice denotes that the payments were “[a]djusted based on the Medicare fee schedule.” (Id. at 8). Plaintiff rendered the care of Plaintiff on February 10 and 13, 2025, which included treatment of lower back pain. (Id. at 9-14). Defendant timely removed the action to this Court on May 29, 2025, alleging federal question jurisdiction as it “involves a federal question under the Medicare Act and relates to benefits and requirements of that Act.” (Docket No. 1 at 1-2). Plaintiff filed the instant Motion to Remand (“MTR”) on August 4, 2025, for lack of subject matter jurisdiction, along with a Request for Judicial Notice in Support of Motion to Remand. (MTR, Docket No 16 at 2; Pltf. RJN, Docket No 17). The Motion to Remand is fully briefed. Defendant filed a Motion to Dismiss for Lack of Jurisdiction

1 Defendant was erroneously sued as “Aetna Health of California Inc.” This Order’s reference to Defendant refers to the correct corporate entity as reflected on the federal docket. 2 Plaintiff calculated this amount as follows: “Amount billed minus amount allowed plus 15% interest per annum as per H&S Code 1371.35, 28 CCR § 1300.71.4.” (Claim at 1). on August 6, 2025, and an accompanying Request for Judicial Notice. (MTD, Docket No. 15; Def. RJN, Docket No. 15-9). In its Motion to Dismiss, Defendant proffered evidence that (1) Plaintiff participates in Medicare per the Medicare provider directory, (2) the patient at issue was insured by Medicare, (3) Aetna is a Medicare Advantage Organization (“MAO”) and (4) Plaintiff submitted a reimbursement request through a Center for Medicare and Medicaid approved avenue known as Form 1500. (See RJN, Ex. 1 (“Medicare Provider Profile”); Felder Decl. ¶ 5; Supplemental Declaration of Marilyn Felder in Support of MTD (“Supp. Felder Decl.) ¶¶ 3-5). In communications with Defendant’s counsel, Plaintiff conceded that he is a “Medicare participating provider” and that he “accept[s] assignment for Medicare-covered services, including those where the patient has authorized payment to the provider.” (MTD, Declaration of Matthew G. Kleiner (“Kleiner Decl.”) ¶ 4). Plaintiff filed an opposition to Defendant’s Motion to Dismiss styled as a Response to Defendant’s Motion to Dismiss as Premature. (Opp’n, Docket No. 19). With Defendant’s Reply in Support of Motion to Dismiss (see Docket No. 25), the Motion to Dismiss is fully briefed. Before the Court are Defendant Aetna’s MTD (see MTD) and Plaintiff’s MTR (see MTR). The Court begins by assessing Plaintiff’s MTR before turning to Defendants’ MTD3. For the reasons explained herein, the Court DENIES Plaintiff’s MTR and GRANTS Defendant Aetna’s MTD, dismissing the action in its entirety without prejudice. // //

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John Attenello MD v. Aetna Life Insurance Company, (C.D. Cal. 2025).

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