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ADVENTIST HEALTH PHYSICIANS NETWORK
NPI 1629311543
Internal Medicine - Hematology & Oncology in Simi Valley, CA

Active since March 28, 2013
1687 ERRINGER RD, SUITE 104, SIMI VALLEY, CA 93065(805) 583-3006(805) 583-0645 Get Directions Write a Review

NPPES record last updated: November 27, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Adventist Health Physicians Network NPPES

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

ADVENTIST HEALTH PHYSICIANS NETWORK (NPI 1629311543) is a healthcare organization registered as a hematology & oncology in Simi Valley, California and active in the NPI registry since March 2013. The organization lists Adrian Serna, Cfo, as its authorized official.

NPPES Registry Identity

NPI1629311543
Entity TypeOrganization
Primary Taxonomy207RH0003X
Legal Business NameADVENTIST HEALTH PHYSICIANS NETWORK
Location Address1687 ERRINGER RD, SUITE 104Simi Valley, CA 93065-6508
Mailing Address1530 E Chevy Chase Dr Ste 110Glendale, CA 91206-4139 · (818) 265-5411
Phone(805) 583-3006
Fax(805) 583-0645
Organization SubpartYes
Authorized OfficialAdrian SernaCfo · (916) 865-1865
Enumeration DateMarch 28, 2013
Last NPPES UpdateNovember 27, 2017
✔ NPI 1629311543 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.
1687 ERRINGER RD, Simi Valley, CA 93065
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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)

Adventist Health Physicians Network is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

138

Medicare enrollment records show 138 clinicians reassign Medicare billing to Adventist Health Physicians Network, which bills Medicare for the services they deliver. Of these, 28 practice within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 22

Family Practice31
Nurse Practitioner18
Obstetrics/Gynecology15
Urology14
General Surgery10
Endocrinology8
Cardiovascular Disease (Cardiology)7
Internal Medicine6
14 other specialties29

Nearest to this location (20)

See all 138
John Dingilian, MD
Family Practice
NPI 1295828291
2750 SYCAMORE DR SUITE 202
Simi Valley, CA 93065
(805) 527-9140
✔ PECOS✔ Accepts Medicare1.6 mi
Lara Hindawi, RDN
Registered Dietitian or Nutrition Professional
NPI 1952181141
2750 SYCAMORE DR STE 201
Simi Valley, CA 93065
(805) 577-8460
1.6 mi
Desiree Sanchez, MD
Urology
NPI 1922539261
2750 SYCAMORE DR STE 210
Simi Valley, CA 93065
(805) 577-8460
✔ PECOS✔ Accepts Medicare1.6 mi
Daniel Takeda, M.D.
Family Practice
NPI 1124120977
2750 SYCAMORE DRIVE SUITE 202
Simi Valley, CA 93065
(805) 527-9140
✔ PECOS✔ Accepts Medicare1.6 mi
Andrew Luckey, M.D.
General Surgery
NPI 1568516086
2650 JONES WAY SUITE 2
Simi Valley, CA 93065
(805) 577-7977
✔ PECOS✔ Accepts Medicare1.7 mi
Rhea Manuel
Family Practice
NPI 1891376752
2755 ALAMO ST STE 201
Simi Valley, CA 93065
(805) 988-7070
✔ PECOS✔ Accepts Medicare1.7 mi
Rebecca Richmond
Nurse Practitioner
NPI 1356822951
2755 ALAMO ST STE 201
Simi Valley, CA 93065
(805) 578-9620
✔ PECOS✔ Accepts Medicare1.7 mi
Kevin Westbrook, M.D.
Family Practice
NPI 1508445859
2755 ALAMO ST STE 201
Simi Valley, CA 93065
(805) 988-7070
✔ PECOS✔ Accepts Medicare1.7 mi
Brittany Zeigler, NP
Nurse Practitioner
NPI 1639801376
2755 ALAMO ST # 201
Simi Valley, CA 93065
(805) 578-9620
✔ PECOS✔ Accepts Medicare1.7 mi
Behdod Katebian
Urology
NPI 1699236612
2975 SYCAMORE DR
Simi Valley, CA 93065
(805) 955-6000
✔ PECOS✔ Accepts Medicare1.7 mi
Alberto Odio, M.D.
Family Practice
NPI 1821062316
2925 SYCAMORE DR SUITE 204/205
Simi Valley, CA 93065
(805) 578-9620
✔ PECOS✔ Accepts Medicare1.7 mi
Masahiro Kushigemachi, M.D.
Family Practice
NPI 1386617058
2925 SYCAMORE DR SUITE 204/205
Simi Valley, CA 93065
(805) 578-9620
✔ PECOS✔ Accepts Medicare1.7 mi
Adam Clark, DO
Emergency Medicine
NPI 1861865610
2876 SYCAMORE DR STE 101
Simi Valley, CA 93065
(805) 527-0115
✔ PECOS✔ Accepts Medicare1.7 mi
Jenna Gharzeddine, MD
Internal Medicine
NPI 1356827323
2876 SYCAMORE DR STE 101
Simi Valley, CA 93065
(805) 527-6424
✔ PECOS✔ Accepts Medicare1.7 mi
Eugene Ahn, MD
Radiation Oncology
NPI 1912999533
2985 SYCAMORE DR
Simi Valley, CA 93065
(805) 584-6611
✔ PECOS✔ Accepts Medicare1.7 mi
Ari Kassardjian, MD
Radiation Oncology
NPI 1689200115
2985 SYCAMORE DR
Simi Valley, CA 93065
(805) 955-6000
✔ PECOS1.7 mi
Melanie Dreher
Nurse Practitioner
NPI 1679125413
2950 SYCAMORE DR
Simi Valley, CA 93065
(805) 955-7060
✔ PECOS✔ Accepts Medicare1.8 mi
Arrash Fard, M.D.
Cardiovascular Disease (Cardiology)
NPI 1336491521
124 MACAW LN
Simi Valley, CA 93065
(805) 306-0304
✔ PECOS✔ Accepts Medicare2.0 mi
Susana Jimenez, AG-ACNP
Nurse Practitioner
NPI 1750854865
124 MACAW LN
Simi Valley, CA 93065
(805) 306-0304
✔ PECOS✔ Accepts Medicare2.0 mi
Klar Pasilaban, FNP
Nurse Practitioner
NPI 1104371806
1822 SPRINGGATE LN APT G
Simi Valley, CA 93065
(805) 256-7828
✔ PECOS✔ Accepts Medicare2.0 mi
See all 138 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 Adventist Health Physicians Network's NPI number?

The NPI number for Adventist Health Physicians Network is 1629311543. It was assigned to this organization in the NPPES registry on March 28, 2013.

Where is Adventist Health Physicians Network located?

Adventist Health Physicians Network is located at 1687 Erringer Rd Suite 104, Simi Valley, CA 93065. The listed phone number is (805) 583-3006.

What is Adventist Health Physicians Network's specialty?

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

Is Adventist Health Physicians Network enrolled in Medicare?

Yes. Adventist Health Physicians Network is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Adventist Health Physicians Network?

According to the CMS Revalidation Reassignment List (October 2026 release), 138 clinicians in 22 Medicare specialties reassign their Medicare billing to Adventist Health Physicians Network. 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 Family Practice (31), Nurse Practitioner (18) and Obstetrics/Gynecology (15). Of these, 28 practice 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 Adventist Health Physicians Network was last updated on November 27, 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.