DAAN REN M.D.
NPI 1851566004
Emergency Medicine in Stockton, CA
About Daan Ren M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAAN REN M.D. (NPI 1851566004) is an individual emergency medicine provider in Stockton, California, licensed in California (A105313) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS and is a graduate of Other (1995).
NPPES Registry Identity
Specialties & Licenses 2
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
Daan Ren 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
12Medicare enrollment records show Daan Ren reassigns Medicare billing to 12 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
French Camp, CA 95231
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1548216260 (California)
- 2,323 clinicians in this Medicare group
Santa Rosa, CA 95405
- Reassigned Medicare billing, California enrollment
- 42 clinicians in this Medicare group
Delano, CA 93215
- Reassigned Medicare billing, California enrollment
- 301 clinicians in this Medicare group
Bakersfield, CA 93311
- Reassigned Medicare billing, California enrollment
- 200 clinicians in this Medicare group
Bakersfield, CA 93308
- Reassigned Medicare billing, California enrollment
- 48 clinicians in this Medicare group
Bakersfield, CA 93301
- Reassigned Medicare billing, California enrollment
- 163 clinicians in this Medicare group
Ridgecrest, CA 93555
- Reassigned Medicare billing, California enrollment
- 143 clinicians in this Medicare group
Panorama City, CA 91402
- Reassigned Medicare billing, California enrollment
- 121 clinicians in this Medicare group
Monterey Park, CA 91754
- Reassigned Medicare billing, California enrollment
- 50 clinicians in this Medicare group
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 914 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 4
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 95209 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.
STOCKTON, CA 95209
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 Daan Ren's NPI number?
The NPI number for Daan Ren is 1851566004. It was assigned to this individual provider in the NPPES registry on April 29, 2008.
Where is Daan Ren located?
Daan Ren practices at 2545 W Hammer Ln, Stockton, CA 95209. The listed phone number is (209) 957-7050.
What is Daan Ren's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Daan Ren enrolled in Medicare?
Yes. Daan Ren 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 Daan Ren's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Daan Ren reassigns Medicare benefits to 12 organizations: Cep America - California (French Camp, CA), Chase Dennis Emergency Medical Group Inc (Santa Rosa, CA), Team Physicians Of California Medical Group Inc (Delano, CA), Pinnacle Emergency Physicians Of Bakersfield, A Professional Corp (Bakersfield, CA), Sunshine Physician Services, PC (Bakersfield, CA) and 7 more organizations, 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 Daan Ren'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 Daan Ren was last updated on April 2, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Daan Ren, M.D. · NPI 1851566004
Emergency Medicine physician in Stockton, California. Individual provider, active in the CMS NPPES registry since April 29, 2008.
## Identity
- **NPI:** 1851566004 (Entity type: Individual)
- **Enumerated:** April 29, 2008
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A105313 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2545 W HAMMER LN, Stockton, CA 95209-2839
- **Phone:** (209) 957-7050
## 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:** 12 organizations under Medicare reassignment (form CMS-855R): Cep America - California (NPI 1467863290, French Camp, CA); Chase Dennis Emergency Medical Group Inc (NPI 1033152350, Santa Rosa, CA); Team Physicians Of California Medical Group Inc (NPI 1447288345, Delano, CA); Pinnacle Emergency Physicians Of Bakersfield, A Professional Corp (NPI 1639415862, Bakersfield, CA); Sunshine Physician Services, PC (NPI 1649725466, Bakersfield, CA); and 7 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1995
## Record status
- **NPPES last updated:** April 2, 2014
- **Other identifiers:** Other A105313 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1851566004) · Data from the CMS NPPES public registry.