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HAYLEY BOWEN OSEN
NPI 1750812319
Anesthesiology in Los Angeles, CA

Active since March 24, 2017PECOS EnrolledAccepts Medicare Assignment
97.29/100
CMS Quality Rating
700 W 7TH ST STE 270D, LOS ANGELES, CA 90017(310) 267-8626(310) 267-3899 Get Directions Write a Review

NPPES record last updated: November 8, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 8, 2024, Nov 22, 2021, Mar 24, 2017 (3 updates tracked since 2017).

About Hayley Bowen Osen NPPES

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

HAYLEY BOWEN OSEN (NPI 1750812319) is an individual anesthesiology provider in Los Angeles, California, licensed in California (A160011) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of University Of Michigan Medical School (2017).

NPPES Registry Identity

NPI1750812319
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameHAYLEY BOWEN OSEN
Location Address700 W 7TH ST STE 270DLos Angeles, CA 90017-3768
Mailing Address5767 W Century Blvd Ste 400Los Angeles, CA 90045-5631
Phone(310) 267-8626
Fax(310) 267-3899
Sole ProprietorNo
Medical School CMSUniversity Of Michigan Medical SchoolGraduated 2017
Enumeration DateMarch 24, 2017
Last NPPES UpdateNovember 8, 20243 updates tracked since enumeration
NPPES CertifiedNovember 8, 2024
✔ NPI 1750812319 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · A160011
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.
700 W 7TH ST STE 270D, Los Angeles, CA 90017
Open in Google Maps ↗

Secondary Practice Location 1

Location 1757 Westwood Plz Ste 3325Los Angeles, CA 90095-1519 · Phone (310) 267-3899

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

Hayley Bowen Osen 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 ID6305249525
PECOS Enrollment IDI20211007000597
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 Reassignment

Medicare enrollment records show Hayley Osen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Regents Of The University Of California
11 mi
Anesthesiology
757 WESTWOOD PLZ
Los Angeles, CA 90095
  • Reassigned Medicare billing, California enrollment
  • 295 clinicians in this Medicare group
NPI 1326096165 (310) 825-9111

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
136 services50 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
36 services36 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
25 services25 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
22 services15 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
17 services13 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.
15 services15 patients

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.

97.29/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality95.72
Promoting Interoperability100
Improvement Activities40
Cost81.58

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 Hayley Osen's NPI number?

The NPI number for Hayley Osen is 1750812319. It was assigned to this individual provider in the NPPES registry on March 24, 2017.

Where is Hayley Osen located?

Hayley Osen practices at 700 W 7th St Ste 270D, Los Angeles, CA 90017. The listed phone number is (310) 267-8626.

What is Hayley Osen's specialty?

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

Is Hayley Osen enrolled in Medicare?

Yes. Hayley Osen 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 organization bills Medicare for Hayley Osen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hayley Osen reassigns Medicare benefits to Regents Of The University Of California (Los Angeles, CA). The 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 Hayley Osen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Hayley Osen was last updated on November 8, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.