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PETER D. EISENBERG M.D.
NPI 1205937646
Specialist in Greenbrae, CA

Active since September 26, 2006PECOS EnrolledAccepts Medicare Assignment
1350 S ELISEO DR, SUITE 200, GREENBRAE, CA 94904(415) 925-5000(415) 925-5050 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Peter D. Eisenberg M.d. NPPES

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

PETER D. EISENBERG M.D. (NPI 1205937646) is an individual specialist in Greenbrae, California, licensed in California (G31825) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Hahneman Medical College Of The Pacific (1972).

NPPES Registry Identity

NPI1205937646
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NamePETER D. EISENBERGCredential: M.D.
Location Address1350 S ELISEO DR, SUITE 200Greenbrae, CA 94904-2011
Mailing Address1350 S Eliseo Dr, Suite 200Greenbrae, CA 94904-2011 · (415) 925-5000 · Fax (415) 925-5050
Phone(415) 925-5000
Fax(415) 925-5050
Sole ProprietorNo
Medical School CMSHahneman Medical College Of The PacificGraduated 1972
Enumeration DateSeptember 26, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1205937646 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in CA · G31825
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
1350 S ELISEO DR, Greenbrae, CA 94904
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Other Identifiers 4

OtherG31825CA · State License
Medicare UPINA44882CA
Medicare ID-Type Unspecified00G318250CA
Medicaid00G318250CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Peter D. Eisenberg M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7618039314
PECOS Enrollment IDI20081215000016
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.

Medicare Billing Reassignment

Medicare enrollment records show Peter Eisenberg reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Marin Cancer Care Inc
Same address
Hematology & Oncology
1350 S ELISEO DR, SUITE 200
Greenbrae, CA 94904
  • Reassigned Medicare billing, California enrollment
  • 15 clinicians in this Medicare group
NPI 1629370499 (415) 925-5000

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

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. LEAH MORTON KELLEY M.D.
Surgery (Surgical Oncology)
1350 S ELISEO DR, SUITE 210
GREENBRAE, CA 94904
Marin County (415) 925-5035
DR. ALBERT A VARNER MD
Internal Medicine (Gastroenterology)
1350 S ELISEO DR, STE 130
GREENBRAE, CA 94904
Marin County (415) 925-6900
BOBBIE HEAD M.D., PHD
Specialist
1350 S ELISEO DR, SUITE 200
GREENBRAE, CA 94904
Marin County (415) 925-5000
PRIMA MEDICAL FOUNDATION
Surgery
1350 S ELISEO DR, #210
GREENBRAE, CA 94904
Marin County (415) 925-5035
MS. LINDA RUTH CLEM PA
Physician Assistant
1350 S ELISEO DR
GREENBRAE, CA 94904
Marin County (415) 925-3590
MARIN RADIATION ONCOLOGY MEDICAL GROUP
Radiology (Radiation Oncology)
1350 S ELISEO DR, 100
GREENBRAE, CA 94904
Marin County (209) 342-2300
RIPPLE SHARMA M.D.
Specialist
1350 S ELISEO DR, 130
GREENBRAE, CA 94904
Marin County (415) 925-6900
DR. LAURY RAPPAPORT PH.D.
Marriage & Family Therapist
1350 S ELISEO DR, SUITE 120
GREENBRAE, CA 94904
Marin County (415) 461-9000

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 Peter Eisenberg's NPI number?

The NPI number for Peter Eisenberg is 1205937646. It was assigned to this individual provider in the NPPES registry on September 26, 2006.

Where is Peter Eisenberg located?

Peter Eisenberg practices at 1350 S Eliseo Dr Suite 200, Greenbrae, CA 94904. The listed phone number is (415) 925-5000.

What is Peter Eisenberg's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Peter Eisenberg enrolled in Medicare?

Yes. Peter Eisenberg is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Peter Eisenberg's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Peter Eisenberg reassigns Medicare benefits to Marin Cancer Care Inc (Greenbrae, CA). The 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 Peter Eisenberg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Peter Eisenberg was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.