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ADVANCED HEMATOLOGY ONCOLOGY MEDICAL GROUP INC
NPI 1083142376
Clinic/Center - Multi-Specialty in Los Angeles, CA

Active since May 31, 2017
6221 WILSHIRE BLVD STE 504, LOS ANGELES, CA 90048(323) 965-9995(323) 965-5678 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 21, 2022, May 31, 2017 (2 updates tracked since 2017).

About Advanced Hematology Oncology Medical Group Inc NPPES

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

ADVANCED HEMATOLOGY ONCOLOGY MEDICAL GROUP INC (NPI 1083142376) is a healthcare organization registered as a multi-specialty in Los Angeles, California and active in the NPI registry since May 2017. The organization lists Roman Kleynberg, President, as its authorized official.

NPPES Registry Identity

NPI1083142376
Entity TypeOrganization
Primary Taxonomy261QM1300X
Legal Business NameADVANCED HEMATOLOGY ONCOLOGY MEDICAL GROUP INC
Location Address6221 WILSHIRE BLVD STE 504Los Angeles, CA 90048-5223
Mailing Address6221 Wilshire Blvd Ste 504Los Angeles, CA 90048-5223 · (323) 965-9995 · Fax (323) 965-5678
Phone(323) 965-9995
Fax(323) 965-5678
Organization SubpartNo
Authorized OfficialRoman KleynbergPresident · (323) 965-9995
Enumeration DateMay 31, 2017
Last NPPES UpdateJuly 21, 20222 updates tracked since enumeration
✔ NPI 1083142376 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Multi-SpecialtyAmbulatory Health Care Facilities
Taxonomy Code261QM1300X
6221 WILSHIRE BLVD STE 504, Los Angeles, CA 90048
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Advanced Hematology Oncology Medical Group Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

8

Medicare enrollment records show 8 clinicians reassign Medicare billing to Advanced Hematology Oncology Medical Group Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 4 within 10 miles. They are listed nearest first.

Clinicians, nearest first (8)

Roman Kleynberg, M.D.
Hematology/Oncology
NPI 1700103298
6221 WILSHIRE BLVD SUITE 504
Los Angeles, CA 90048
(323) 965-5679
✔ PECOS✔ Accepts MedicareSame address
Nidhi Madana, R.N., F.N.P
Nurse Practitioner
NPI 1225479660
3828 DELMAS TER
Culver City, CA 90232
(310) 836-7000
✔ PECOS3.4 mi
Benedict Terence
Nurse Practitioner
NPI 1689476178
401 S LA BREA AVE
Inglewood, CA 90301
(310) 275-7575
✔ PECOS✔ Accepts Medicare7.2 mi
Yaroslava Markov, MSN, ARNP, FNP
Nurse Practitioner
NPI 1285418749
3819 SHERVIEW DR
Sherman Oaks, CA 91403
(424) 355-3555
✔ PECOS7.7 mi
Ajmal Mohammad, N.P.
Nurse Practitioner
NPI 1700017712
4023 MARINE AVE
Lawndale, CA 90260
(310) 508-8693
✔ PECOS✔ Accepts Medicare12 mi
Ramon Pacina, NP
Nurse Practitioner
NPI 1407434004
23018 MONETA AVE
Carson, CA 90745
(310) 830-9577
✔ PECOS✔ Accepts Medicare18 mi
Pedro Figueroa, NP
Nurse Practitioner
NPI 1740753565
14659 OLIVE VIEW DR
Sylmar, CA 91342
(818) 485-0867
✔ PECOS✔ Accepts Medicare19 mi
Rosan Derayunan, FNP-BC
Nurse Practitioner
NPI 1740942481
1720 E LOS ANGELES AVE STE 231
Simi Valley, CA 93065
(805) 980-7574
✔ PECOS✔ Accepts Medicare27 mi

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 Advanced Hematology Oncology Medical Group Inc's NPI number?

The NPI number for Advanced Hematology Oncology Medical Group Inc is 1083142376. It was assigned to this organization in the NPPES registry on May 31, 2017.

Where is Advanced Hematology Oncology Medical Group Inc located?

Advanced Hematology Oncology Medical Group Inc is located at 6221 Wilshire Blvd Ste 504, Los Angeles, CA 90048. The listed phone number is (323) 965-9995.

What is Advanced Hematology Oncology Medical Group Inc's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Multi-Specialty, with taxonomy code 261QM1300X.

Is Advanced Hematology Oncology Medical Group Inc enrolled in Medicare?

Yes. Advanced Hematology Oncology Medical Group Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Advanced Hematology Oncology Medical Group Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians in 2 Medicare specialties reassign their Medicare billing to Advanced Hematology Oncology 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 Nurse Practitioner (7) and Hematology/Oncology (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 Advanced Hematology Oncology Medical Group Inc was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.