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DR. GLENN A MARSHAK M.D.
NPI 1104890029
Internal Medicine in Beverly Hills, CA

Active since February 15, 2006PECOS Enrolled
8920 WILSHIRE BLVD, BEVERLY HILLS, CA 90211(310) 553-5203 Get Directions Write a Review

NPPES record last updated: November 3, 2016. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Glenn A Marshak M.d. NPPES

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

DR. GLENN A MARSHAK M.D. (NPI 1104890029) is an individual internal medicine provider in Beverly Hills, California, licensed in California (G78454) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1104890029
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. GLENN A MARSHAKCredential: M.D.
Location Address8920 WILSHIRE BLVDBeverly Hills, CA 90211-2007
Mailing Address8920 Wilshire Blvd, Suite 310Beverly Hills, CA 90211-2007 · (310) 553-5203
Phone(310) 553-5203
Sole ProprietorNo
Enumeration DateFebruary 15, 2006
Last NPPES UpdateNovember 3, 2016
✔ NPI 1104890029 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G78454
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
8920 WILSHIRE BLVD, Beverly Hills, CA 90211
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Other Identifiers 2

Medicare PINWG78454ICA
Medicare UPINF91203CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Glenn A Marshak M.d. 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.

Areas of Expertise CMS Part B claims 2

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.

Injection, denosumab, 1 mg J0897
Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
720 services11 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
42 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90211 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
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. STEVE CHEN M.D.
Surgery (Pediatric Surgery)
8920 WILSHIRE BLVD, SUITE 326
BEVERLY HILLS, CA 90211
Los Angeles County (310) 598-7738
MR. A KEVIN AMINIAN MD
Psychiatry & Neurology (Neurology)
8920 WILSHIRE BLVD, SUITE 548
BEVERLY HILLS, CA 90211
Los Angeles County (310) 358-0700
DR. PAUL WESLEY WALLACE MD
Dermatology
8920 WILSHIRE BLVD, SUITE 327
BEVERLY HILLS, CA 90211
Los Angeles County (310) 652-8460
WALLACE MEDICAL GROUP, INC
Dermatology (Procedural Dermatology)
8920 WILSHIRE BLVD, SUITE 327
BEVERLY HILLS, CA 90211
Los Angeles County (310) 652-8460
DR. MARY MIGLIETTA-ROTHMAN DDS
Dentist
8920 WILSHIRE BLVD, SU. 410
BEVERLY HILLS, CA 90211
Los Angeles County (310) 652-2360
JOHN D ROMM MD A MEDICAL CORPORATION
Internal Medicine (Gastroenterology)
8920 WILSHIRE BLVD, STE #330
BEVERLY HILLS, CA 90211
Los Angeles County (310) 854-5638
DR. MICHELE L FRAWLEY DDS
Dentist (General Practice)
8920 WILSHIRE BLVD, SUITE 701
BEVERLY HILLS, CA 90211
Los Angeles County (310) 652-8383
TOM FLASHMAN MEDICAL CORPORATION
Specialist
8920 WILSHIRE BLVD, SUITE 301
BEVERLY HILLS, CA 90211
Los Angeles County (310) 360-9245

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 Glenn Marshak's NPI number?

The NPI number for Glenn Marshak is 1104890029. It was assigned to this individual provider in the NPPES registry on February 15, 2006.

Where is Glenn Marshak located?

Glenn Marshak practices at 8920 Wilshire Blvd, Beverly Hills, CA 90211. The listed phone number is (310) 553-5203.

What is Glenn Marshak's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Glenn Marshak enrolled in Medicare?

Yes. Glenn Marshak is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Glenn Marshak was last updated on November 3, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.