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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARK ALEXANDER FORSBERG MD
NPI 1639638661
Internal Medicine - Hematology & Oncology in Los Angeles, CA

Active since March 19, 2019PECOS Enrolled
1441 EASTLAKE AVE, LOS ANGELES, CA 90089(800) 872-2273 Get Directions Write a Review

NPPES record last updated: June 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mark Alexander Forsberg Md NPPES

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

MARK ALEXANDER FORSBERG MD (NPI 1639638661) is an individual hematology & oncology provider in Los Angeles, California, licensed in California (A209783) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1639638661
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameMARK ALEXANDER FORSBERGCredential: MD
Location Address1441 EASTLAKE AVELos Angeles, CA 90089-1019
Mailing Address1441 Eastlake AveLos Angeles, CA 90089-1019 · (800) 872-2273
Phone(800) 872-2273
Sole ProprietorNo
Enumeration DateMarch 19, 2019
Last NPPES UpdateJune 13, 2026
NPPES CertifiedJune 13, 2026
✔ NPI 1639638661 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in CA · A209783
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.
1441 EASTLAKE AVE, Los Angeles, CA 90089
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Alexander Forsberg Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90089 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
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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. DANIELLE RENEE STERRENBERG M.D.
Internal Medicine (Hematology & Oncology)
1441 EASTLAKE AVE
LOS ANGELES, CA 90089
Los Angeles County (323) 865-0563
EMILY ELIZABETH TALMICH PA-C
Physician Assistant (Surgical)
1441 EASTLAKE AVE
LOS ANGELES, CA 90089
Los Angeles County (323) 865-3700
DR. NEDA R BLACK M.D.
Dermatology
1441 EASTLAKE AVE, TOPPING TOWER, SUITE 3405
LOS ANGELES, CA 90089
Los Angeles County (818) 634-2514
STEPHANIE TIEMPO BITANGA NP-C
Nurse Practitioner (Acute Care)
1441 EASTLAKE AVE
LOS ANGELES, CA 90089
Los Angeles County (323) 865-3000
CARMEN LUCIA MARTINEZ MS,RD
Dietitian, Registered
1441 EASTLAKE AVE
LOS ANGELES, CA 90089
Los Angeles County (323) 865-3893
DR. BURTON L. EISENBERG MD
Surgery (Surgical Oncology)
1441 EASTLAKE AVE
LOS ANGELES, CA 90089
Los Angeles County (323) 865-3535
DR. ERIC LEON TAM MD
Internal Medicine (Hematology & Oncology)
1441 EASTLAKE AVE
LOS ANGELES, CA 90089
Los Angeles County (323) 865-3105
DR. AKBAR ASHRAFI MD
Student in an Organized Health Care Education/Training Program
1441 EASTLAKE AVE
LOS ANGELES, CA 90089
Los Angeles County (818) 877-5954

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 Mark Forsberg's NPI number?

The NPI number for Mark Forsberg is 1639638661. It was assigned to this individual provider in the NPPES registry on March 19, 2019.

Where is Mark Forsberg located?

Mark Forsberg practices at 1441 Eastlake Ave, Los Angeles, CA 90089. The listed phone number is (800) 872-2273.

What is Mark Forsberg's specialty?

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

Is Mark Forsberg enrolled in Medicare?

Yes. Mark Forsberg is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Forsberg was last updated on June 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days 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.