DR. JEFFREY BARNETT LEWIS M.D.
NPI 1215371216
Anesthesiology in Oakland, CA
About Dr. Jeffrey Barnett Lewis M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JEFFREY BARNETT LEWIS M.D. (NPI 1215371216) is an individual anesthesiology provider in Oakland, California, licensed in California (139881) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS and is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses
Group Practice 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. Jeffrey Barnett Lewis 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
6Medicare enrollment records show Jeffrey Lewis reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oakland, CA 94602
- Reassigned Medicare billing, California enrollment
- 900 clinicians in this Medicare group
San Francisco, CA 94116
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 833 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 clinicians in this Medicare group
Sacramento, CA 95821
- Reassigned Medicare billing, California enrollment
- 167 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 270 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.
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.
OAKLAND, CA 94602
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 Jeffrey Lewis's NPI number?
The NPI number for Jeffrey Lewis is 1215371216. It was assigned to this individual provider in the NPPES registry on April 20, 2013.
Where is Jeffrey Lewis located?
Jeffrey Lewis practices at 1411 E 31st St, Oakland, CA 94602. The listed phone number is (916) 734-2011.
What is Jeffrey Lewis's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Jeffrey Lewis enrolled in Medicare?
Yes. Jeffrey Lewis 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 Jeffrey Lewis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jeffrey Lewis reassigns Medicare benefits to 6 organizations: Alameda Health System (Oakland, CA), Permanente Medical Group Inc (San Francisco, CA), Cep America - Anesthesia, PC (Walnut Creek, CA), John Muir Trauma Physicians Billing Service (Walnut Creek, CA), Central Anesthesia Service Exchange Medical Group, Inc. (Sacramento, CA) and 1 more organization, listed in the Medicare section above. 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 Jeffrey Lewis'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 Jeffrey Lewis was last updated on February 4, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. Jeffrey Barnett Lewis, M.D. · NPI 1215371216
Anesthesiology physician in Oakland, California. Individual provider, active in the CMS NPPES registry since April 20, 2013.
## Identity
- **NPI:** 1215371216 (Entity type: Individual)
- **Enumerated:** April 20, 2013
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 139881 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1411 E 31ST ST, Oakland, CA 94602-1018
- **Phone:** (916) 734-2011
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Alameda Health System (NPI 1740332931, Oakland, CA); Permanente Medical Group Inc (NPI 1841373800, San Francisco, CA); Cep America - Anesthesia, PC (NPI 1790401438, Walnut Creek, CA); John Muir Trauma Physicians Billing Service (NPI 1093864837, Walnut Creek, CA); Central Anesthesia Service Exchange Medical Group, Inc. (NPI 1194826404, Sacramento, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** February 4, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1215371216) · Data from the CMS NPPES public registry.