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DR. AREG GRIGORIAN MD
NPI 1538579578
Surgery - Surgical Critical Care in Orange, CA

Active since April 29, 2014PECOS EnrolledAccepts Medicare Assignment
101 THE CITY DR S, ORANGE, CA 92868(714) 880-7812 Get Directions Write a Review

NPPES record last updated: December 22, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 22, 2022, Dec 8, 2021, Aug 2, 2021 (3 updates tracked since 2021).

About Dr. Areg Grigorian Md NPPES

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

DR. AREG GRIGORIAN MD (NPI 1538579578) is an individual surgical critical care provider in Orange, California, licensed in California (A138676) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of University Of California, San Diego School Of Medicine (2014).

NPPES Registry Identity

NPI1538579578
Entity TypeIndividualMale
Primary Taxonomy2086S0102X
Provider Legal NameDR. AREG GRIGORIANCredential: MD
Location Address101 THE CITY DR SOrange, CA 92868-3201
Mailing Address200 S Manchester Ave Ste 300Orange, CA 92868-3219 · (714) 456-2986
Phone(714) 880-7812
Sole ProprietorNo
Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 2014
Enumeration DateApril 29, 2014
Last NPPES UpdateDecember 22, 20223 updates tracked since enumeration
NPPES CertifiedDecember 22, 2022
✔ NPI 1538579578 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Surgical Critical CareAllopathic & Osteopathic Physicians
Taxonomy Code2086S0102X
License✔ Licensed in CA · A138676
Definition
A surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
101 THE CITY DR S, Orange, CA 92868
Open in Google Maps ↗

Secondary Practice Location 1

Location 11500 San Pablo St Fl 7Los Angeles, CA 90033-5313 · Phone (323) 442-6254

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

Dr. Areg Grigorian 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 ID9436438645
PECOS Enrollment IDI20170919000052
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 11

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
138 services80 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
88 services63 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
55 services54 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.
46 services46 patients
Ultrasound scan of chest 76604
An ultrasound scan of the chest is a non-invasive imaging procedure that uses sound waves to create pictures of the structures within your chest, such as your heart and lungs. It's a safe, painless method that helps doctors diagnose and monitor various conditions.
21 services21 patients
Limited ultrasound scan of abdomen 76705
A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.
21 services21 patients

Other Providers at the Same Location NPPES 20

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

DR. ANKIT BHUPENDRA PATEL D.O.
Radiology (Diagnostic Radiology)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-5113
DR. LAURA CATHERINE SKOCZYLAS MD
Obstetrics & Gynecology
101 THE CITY DR S, BUILDING 56, DEPARTMENT OF OB/GYN
ORANGE, CA 92868
Orange County (714) 456-8224
MICHAEL CHENG DO
Internal Medicine (Rheumatology)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-7110
AESTHETIC AND PLASTIC SURGERY INSTITUTE
Plastic Surgery
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-2986
JOSEPH VILLARREAL M.D.
Emergency Medicine
101 THE CITY DR S, BUILDING 1A, ROOM 1009
ORANGE, CA 92868
Orange County (714) 456-5239
DEMI TRAN
Psychiatry & Neurology (Neurology)
101 THE CITY DR S, CITY TOWER, SUITE 400
ORANGE, CA 92868
Orange County (171) 456-6693
DR. ISABEL CARLTON CLARK M.D.
Surgery (Trauma Surgery)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-7890
DYLAN LUKATO
Emergency Medicine
101 THE CITY DR S
ORANGE, CA 92868
Orange County (415) 218-8041

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 Areg Grigorian's NPI number?

The NPI number for Areg Grigorian is 1538579578. It was assigned to this individual provider in the NPPES registry on April 29, 2014.

Where is Areg Grigorian located?

Areg Grigorian practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 880-7812.

What is Areg Grigorian's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.

Is Areg Grigorian enrolled in Medicare?

Yes. Areg Grigorian 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 Areg Grigorian was last updated on December 22, 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.