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PACIFIC SHORES MEDICAL GROUP, INC
NPI 1447587050
Internal Medicine - Hematology & Oncology in Irvine, CA

Active since November 03, 2009
16300 SAND CANYON AVE, STE 207, IRVINE, CA 92618(949) 333-7580(949) 333-7599 Get Directions Write a Review

NPPES record last updated: August 22, 2018. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Pacific Shores Medical Group, Inc NPPES

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

PACIFIC SHORES MEDICAL GROUP, INC (NPI 1447587050) is a healthcare organization registered as a hematology & oncology in Irvine, California and active in the NPI registry since November 2009. The organization lists Nerses Simon Tchekmedyain, Ceo, as its authorized official.

NPPES Registry Identity

NPI1447587050
Entity TypeOrganization
Primary Taxonomy207RH0003X
Legal Business NamePACIFIC SHORES MEDICAL GROUP, INC
Location Address16300 SAND CANYON AVE, STE 207Irvine, CA 92618
Mailing Address1043 Elm Ave, Ste 104Long Beach, CA 90813-3271 · (562) 590-0345
Phone(949) 333-7580
Fax(949) 333-7599
Organization SubpartNo
Authorized OfficialNerses Simon TchekmedyainCeo · (949) 333-7580
Enumeration DateNovember 3, 2009
Last NPPES UpdateAugust 22, 2018
✔ NPI 1447587050 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
16300 SAND CANYON AVE, Irvine, CA 92618
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Pacific Shores Medical Group, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

23

Medicare enrollment records show 23 clinicians reassign Medicare billing to Pacific Shores Medical Group, Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 4 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 3

Hematology/Oncology16
Nurse Practitioner6
Hematology1

Nearest to this location (20)

See all 23
Sudarsan Kollimuttathuillam, MD
Hematology/Oncology
NPI 1902324528
16300 SAND CANYON AVE STE 207
Irvine, CA 92618
(949) 333-7580
✔ PECOS✔ Accepts MedicareSame address
Nerses Tchekmedyian, M.D.
Hematology/Oncology
NPI 1821032129
1000 FIVEPOINT
Irvine, CA 92618
(949) 671-4673
✔ PECOS✔ Accepts Medicare2.5 mi
Karen Anne Shadrick
Nurse Practitioner
NPI 1205322872
150 PAULARINO AVE STE D182
Costa Mesa, CA 92626
(888) 336-3649
✔ PECOS6.1 mi
Dilruba Haque, M.D.
Hematology/Oncology
NPI 1689838641
351 HOSPITAL RD STE 610
Newport Beach, CA 92663
(949) 999-1400
✔ PECOS✔ Accepts Medicare9.4 mi
Eleonor Quan, M.D.
Hematology
NPI 1770502254
19582 BEACH BLVD #212
Huntington Beach, CA 92648
(714) 252-9415
✔ PECOS✔ Accepts Medicare12 mi
Karlos Oregel, M.D.
Hematology/Oncology
NPI 1184913006
19582 BEACH BLVD STE 212
Huntington Beach, CA 92648
(714) 252-9415
✔ PECOS✔ Accepts Medicare12 mi
Lynda Tran, NP
Nurse Practitioner
NPI 1942776240
19582 BEACH BLVD STE 212
Huntington Beach, CA 92648
(714) 252-9415
✔ PECOS✔ Accepts Medicare12 mi
Mohamad Barakat
Hematology/Oncology
NPI 1558534131
19671 BEACH BLVD STE 315
Huntington Beach, CA 92648
(714) 252-9415
✔ PECOS✔ Accepts Medicare13 mi
Luke Chen, M.D.
Hematology/Oncology
NPI 1265451736
2100 MAIN ST STE 300
Huntington Beach, CA 92648
(714) 252-9415
✔ PECOS✔ Accepts Medicare13 mi
Katherine Cunha, NP
Nurse Practitioner
NPI 1699242776
2100 MAIN ST STE 300
Huntington Beach, CA 92648
(714) 252-9415
✔ PECOS✔ Accepts Medicare13 mi
Paula Dithomas, FNP-C
Nurse Practitioner
NPI 1740623453
2100 MAIN ST STE 300
Huntington Beach, CA 92648
(714) 252-9415
✔ PECOS✔ Accepts Medicare13 mi
Danny Nguyen, M.D.
Hematology/Oncology
NPI 1386960334
2100 MAIN ST STE 300
Huntington Beach, CA 92648
(714) 252-9415
✔ PECOS✔ Accepts Medicare13 mi
Nishan Tchekmedyian, MD
Hematology/Oncology
NPI 1235450305
2100 MAIN ST STE 300
Huntington Beach, CA 92648
(714) 252-9415
✔ PECOS✔ Accepts Medicare13 mi
Kiem Liem, M.D.
Hematology/Oncology
NPI 1407875982
3747 WORSHAM AVE STE 101
Long Beach, CA 90808
(562) 430-5900
✔ PECOS✔ Accepts Medicare24 mi
Sassan Farjami, M.D.
Hematology/Oncology
NPI 1134154594
1043 ELM AVE STE 104
Long Beach, CA 90813
(562) 590-0345
✔ PECOS✔ Accepts Medicare25 mi
Chona Ray, N.P.
Nurse Practitioner
NPI 1932128402
1043 ELM AVE STE 104
Long Beach, CA 90813
(562) 590-0345
✔ PECOS✔ Accepts Medicare25 mi
Lihong Wu, M.D.
Hematology/Oncology
NPI 1932128410
1043 ELM AVE STE 104
Long Beach, CA 90813
(562) 590-0345
✔ PECOS✔ Accepts Medicare25 mi
Mark Ngo, M.D.
Hematology/Oncology
NPI 1982623468
1043 ELM AVE STE 104
Long Beach, CA 90813
(562) 590-0345
✔ PECOS✔ Accepts Medicare25 mi
Eunice Kim, APN
Nurse Practitioner
NPI 1043684863
23456 HAWTHORNE BLVD STE 260
Torrance, CA 90505
(424) 212-6200
✔ PECOS✔ Accepts Medicare35 mi
Aileen Novero, M.D.
Hematology/Oncology
NPI 1154641421
23456 HAWTHORNE BLVD STE 260
Torrance, CA 90505
(424) 212-6200
✔ PECOS✔ Accepts Medicare35 mi
See all 23 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Pacific Shores Medical Group, Inc's NPI number?

The NPI number for Pacific Shores Medical Group, Inc is 1447587050. It was assigned to this organization in the NPPES registry on November 3, 2009.

Where is Pacific Shores Medical Group, Inc located?

Pacific Shores Medical Group, Inc is located at 16300 Sand Canyon Ave Ste 207, Irvine, CA 92618. The listed phone number is (949) 333-7580.

What is Pacific Shores Medical Group, Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Pacific Shores Medical Group, Inc enrolled in Medicare?

Yes. Pacific Shores Medical Group, Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Pacific Shores Medical Group, Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 23 clinicians in 3 Medicare specialties reassign their Medicare billing to Pacific Shores Medical Group, Inc. A 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 the clinician's services. The largest specialties are Hematology/Oncology (16), Nurse Practitioner (6) and Hematology (1). Of these, 1 practice at this address and 4 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Pacific Shores Medical Group, Inc was last updated on August 22, 2018. 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.