MR. JOHN E TURNS MD
NPI 1942371588
Family Medicine in Castro Valley, CA
About Mr. John E Turns Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. JOHN E TURNS MD (NPI 1942371588) is an individual family medicine provider in Castro Valley, California, licensed in California (G044402) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Ramon, and is a graduate of Tufts University School Of Medicine (1979).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 3
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
Mr. John E Turns Md 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 Reassignment
Medicare enrollment records show John Turns reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Castro Valley, CA 94546
- Reassigned Medicare billing, California enrollment
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 10
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 94546 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 13
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CASTRO VALLEY, CA 94546
CASTRO VALLEY, CA 94546
CASTRO VALLEY, CA 94546
CASTRO VALLEY, CA 94546
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 John Turns's NPI number?
The NPI number for John Turns is 1942371588. It was assigned to this individual provider in the NPPES registry on November 13, 2006.
Where is John Turns located?
John Turns practices at 22101 Redwood Rd, Castro Valley, CA 94546. The listed phone number is (510) 582-0777.
What is John Turns's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is John Turns enrolled in Medicare?
Yes. John Turns 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 John Turns's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Turns reassigns Medicare benefits to John E Turns MD Inc (Castro Valley, 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 John Turns'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 John Turns was last updated on July 21, 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.
# Mr. John E Turns, MD · NPI 1942371588
Family Medicine physician in Castro Valley, California. Individual provider, active in the CMS NPPES registry since November 13, 2006.
## Identity
- **NPI:** 1942371588 (Entity type: Individual)
- **Enumerated:** November 13, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** G044402 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 22101 REDWOOD RD, Castro Valley, CA 94546-7107
- **Phone:** (510) 582-0777
## 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:** John E Turns MD Inc (NPI 1679657779, Castro Valley, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tufts University School Of Medicine, class of 1979
## Record status
- **NPPES last updated:** July 21, 2022
- **Other identifiers:** Other ZZZ14143Z (CA); Other G444020 (CA); Medicaid 00G444020 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1942371588) · Data from the CMS NPPES public registry.