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DR. GABRIEL STEPHAN NILES M.D.
NPI 1285611699
Family Medicine in Los Angeles, CA

Active since December 28, 2005PECOS EnrolledAccepts Medicare Assignment
12555 W JEFFERSON BLVD STE 301, LOS ANGELES, CA 90066(424) 443-5555(424) 443-5550 Get Directions Write a Review

NPPES record last updated: November 28, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 28, 2022, Apr 19, 2021, Aug 18, 2020 and 4 more (7 updates tracked since 2016).

About Dr. Gabriel Stephan Niles M.d. NPPES

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

DR. GABRIEL STEPHAN NILES M.D. (NPI 1285611699) is an individual family medicine provider in Los Angeles, California, licensed in California (A100831) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Other (2005).

NPPES Registry Identity

NPI1285611699
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. GABRIEL STEPHAN NILESCredential: M.D.
Location Address12555 W JEFFERSON BLVD STE 301Los Angeles, CA 90066-7032
Mailing Address12555 W Jefferson Blvd # 301Los Angeles, CA 90066-7032 · (424) 443-5555 · Fax (424) 443-5550
Phone(424) 443-5555
Fax(424) 443-5550
Sole ProprietorNo
Medical School CMSOtherGraduated 2005
Enumeration DateDecember 28, 2005
Last NPPES UpdateNovember 28, 20227 updates tracked since enumeration
NPPES CertifiedNovember 28, 2022
✔ NPI 1285611699 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in CA · A100831✔ Licensed in WA · MD6030955
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
12555 W JEFFERSON BLVD STE 301, Los Angeles, CA 90066
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Other Identifiers 2

Other2045010WA · Wa Medicaid Provider Id
OtherG8940666WA · Medicare Ptan

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

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

Dr. Gabriel Stephan Niles M.d. 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 ID2264601012
PECOS Enrollment IDI20110811000471
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 Gabriel Niles reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Providence Saint Johns Medical Foundation
5.1 mi
Specialist
2121 SANTA MONICA BLVD
Santa Monica, CA 90404
  • Reassigned Medicare billing, California enrollment
  • 461 clinicians in this Medicare group
NPI 1770093734 (310) 582-7312

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 10

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.
220 services102 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.
192 services116 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
69 services69 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
21 services21 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
18 services18 patients
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677
The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90066 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RENE MELARA LCSW
Social Worker (Clinical)
12555 W JEFFERSON BLVD STE 301
LOS ANGELES, CA 90066
Los Angeles County (424) 443-5555
DR. MOJAN GABBAY M.D.
Obstetrics & Gynecology
12555 W JEFFERSON BLVD STE 301
LOS ANGELES, CA 90066
Los Angeles County (310) 822-5066
MRS. NICOLETTE JOANNE BIDLINGMEYER LCSW
Social Worker (Clinical)
12555 W JEFFERSON BLVD STE 301
LOS ANGELES, CA 90066
Los Angeles County (424) 443-5555
DIMITRA PAPASPYRIDI
Internal Medicine
12555 W JEFFERSON BLVD STE 301
LOS ANGELES, CA 90066
Los Angeles County (424) 443-5555
MRS. CLAIRE G PICHEL MA, LCSW
Social Worker (Clinical)
12555 W JEFFERSON BLVD STE 301
LOS ANGELES, CA 90066
Los Angeles County (424) 443-5555
HANNAH HEWES-CLARK ASW
Social Worker (Clinical)
12555 W JEFFERSON BLVD STE 301
LOS ANGELES, CA 90066
Los Angeles County (310) 822-5066
TAYLOR ANITA HAMPTON
Social Worker (Clinical)
12555 W JEFFERSON BLVD STE 301
LOS ANGELES, CA 90066
Los Angeles County (424) 443-5555
DR. LINDA NARVAEZ M.D.
Family Medicine
12555 W JEFFERSON BLVD STE 301
LOS ANGELES, CA 90066
Los Angeles County (310) 838-3133

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 Gabriel Niles's NPI number?

The NPI number for Gabriel Niles is 1285611699. It was assigned to this individual provider in the NPPES registry on December 28, 2005.

Where is Gabriel Niles located?

Gabriel Niles practices at 12555 W Jefferson Blvd Ste 301, Los Angeles, CA 90066. The listed phone number is (424) 443-5555.

What is Gabriel Niles's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Gabriel Niles enrolled in Medicare?

Yes. Gabriel Niles 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 Gabriel Niles's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gabriel Niles reassigns Medicare benefits to Providence Saint Johns Medical Foundation (Santa Monica, 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 Gabriel Niles's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gabriel Niles accept?

Health plans from Providence Health Plan list Gabriel Niles 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 Gabriel Niles was last updated on November 28, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.