1. Home
  2. Directory
  3. California
  4. Los Angeles
  5. Surgery
  6. NPI Profile

GREGORY A CHAMBERS MD
NPI 1972546406
Surgery in Los Angeles, CA

Active since June 13, 2006PECOS EnrolledAccepts Medicare Assignment
87.59/100
CMS Quality Rating
231 W VERNON AVE STE 202, LOS ANGELES, CA 90037(323) 238-7192(323) 432-2035 Get Directions Write a Review

NPPES record last updated: November 1, 2017. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Gregory A Chambers Md NPPES

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

GREGORY A CHAMBERS MD (NPI 1972546406) is an individual surgery provider in Los Angeles, California, licensed in California (A62663) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Kansas School Of Med (kc/wich/sal) (1995).

NPPES Registry Identity

NPI1972546406
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameGREGORY A CHAMBERSCredential: MD
Location Address231 W VERNON AVE STE 202Los Angeles, CA 90037-2779
Mailing AddressPo Box 91569Long Beach, CA 90809-1569 · (562) 491-4879 · Fax (562) 491-7987
Phone(323) 238-7192
Fax(323) 432-2035
Sole ProprietorYes
Medical School CMSUniversity Of Kansas School Of Med (kc/wich/sal)Graduated 1995
Enumeration DateJune 13, 2006
Last NPPES UpdateNovember 1, 2017
✔ NPI 1972546406 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in CA · A62663
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
231 W VERNON AVE STE 202, Los Angeles, CA 90037
Open in Google Maps ↗

Other Identifiers 3

Medicare UPING94747CA
Medicare PINWA62663BCA
Medicaid00A626630CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory A Chambers Md 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 ID345292595
PECOS Enrollment IDI20050215001098
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.

Areas of Expertise CMS Part B claims 3

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.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
35 services35 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
35 services33 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90037 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
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

87.59/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality73.94
Improvement Activities40

Other Providers at the Same Location NPPES

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

GREGORY CHAMBERS M D A MEDICAL CORPORATION
Surgery
231 W VERNON AVE STE 202
LOS ANGELES, CA 90037
Los Angeles County (323) 238-7192

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 Gregory Chambers's NPI number?

The NPI number for Gregory Chambers is 1972546406. It was assigned to this individual provider in the NPPES registry on June 13, 2006.

Where is Gregory Chambers located?

Gregory Chambers practices at 231 W Vernon Ave Ste 202, Los Angeles, CA 90037. The listed phone number is (323) 238-7192.

What is Gregory Chambers's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Gregory Chambers enrolled in Medicare?

Yes. Gregory Chambers 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.

When was this NPI record last updated?

The NPPES record for Gregory Chambers was last updated on November 1, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.