DR. ADAM GREENBERG MD
NPI 1407866288
Internal Medicine in Sacramento, CA
About Dr. Adam Greenberg Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ADAM GREENBERG MD (NPI 1407866288) is an individual internal medicine provider in Sacramento, California, licensed in California (G145782) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Cocoa Beach.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Adam Greenberg Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Adam Greenberg reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sacramento, CA 95820
- Reassigned Medicare billing, California enrollment
- 135 clinicians in this Medicare group
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Sonora, CA 95370
- Reassigned Medicare billing, California enrollment
- 172 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95820 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
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 Adam Greenberg's NPI number?
The NPI number for Adam Greenberg is 1407866288. It was assigned to this individual provider in the NPPES registry on August 8, 2006.
Where is Adam Greenberg located?
Adam Greenberg practices at 4600 Broadway Ste 1100, Sacramento, CA 95820. The listed phone number is (916) 874-9670.
What is Adam Greenberg's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Adam Greenberg enrolled in Medicare?
Yes. Adam Greenberg is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Adam Greenberg's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adam Greenberg reassigns Medicare benefits to 3 organizations: County Of Sacramento (Sacramento, CA), Permanente Medical Group Inc (Stockton, CA) and Sonora Community Hospital (Sonora, CA). Each 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 Adam Greenberg'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 Adam Greenberg was last updated on July 16, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.