DR. BOGDAN SILVIU EFTIMIE M.D.
NPI 1740458900
Internal Medicine - Hematology & Oncology in Fremont, CA
About Dr. Bogdan Silviu Eftimie M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BOGDAN SILVIU EFTIMIE M.D. (NPI 1740458900) is an individual hematology & oncology provider in Fremont, California, licensed in California (A77323) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS, maintains a secondary practice location in Fremont, and is a graduate of Loma Linda University School Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Dr. Bogdan Silviu Eftimie 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.
Medicare Billing Reassignments
5Medicare enrollment records show Bogdan Eftimie reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 2,112 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
Monterey, CA 93940
- Reassigned Medicare billing, California enrollment
- 31 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 1,437 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 94538 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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Bogdan Eftimie's NPI number?
The NPI number for Bogdan Eftimie is 1740458900. It was assigned to this individual provider in the NPPES registry on February 11, 2008.
Where is Bogdan Eftimie located?
Bogdan Eftimie practices at 2500 Mowry Ave Ste 227, Fremont, CA 94538. The listed phone number is (510) 248-1600.
What is Bogdan Eftimie's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Bogdan Eftimie enrolled in Medicare?
Yes. Bogdan Eftimie 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 organizations bill Medicare for Bogdan Eftimie's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Bogdan Eftimie reassigns Medicare benefits to 5 organizations: Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), Monterey Bay Oncology A Medical Corporation (Monterey, CA) and Emergency And Acute Care Medical Corporation (San Diego, 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 Bogdan Eftimie'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 Bogdan Eftimie was last updated on July 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.
# Dr. Bogdan Silviu Eftimie, M.D. · NPI 1740458900
Hematology & Oncology physician in Fremont, California. Individual provider, active in the CMS NPPES registry since February 11, 2008.
## Identity
- **NPI:** 1740458900 (Entity type: Individual)
- **Enumerated:** February 11, 2008
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** A77323 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2500 MOWRY AVE STE 227, Fremont, CA 94538-1605
- **Phone:** (510) 248-1600
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1235322348, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Monterey Bay Oncology A Medical Corporation (NPI 1972542959, Monterey, CA); Emergency And Acute Care Medical Corporation (NPI 1437103942, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Loma Linda University School Of Medicine, class of 2000
## Record status
- **NPPES last updated:** July 23, 2025
- **Other identifiers:** Other A77323 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1740458900) · Data from the CMS NPPES public registry.