MR. ARTHUR ANTHONY BLAIN IV M.D.
NPI 1801816525
Family Medicine in San Diego, CA
About Mr. Arthur Anthony Blain Iv M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. ARTHUR ANTHONY BLAIN IV M.D. (NPI 1801816525) is an individual family medicine provider in San Diego, California, licensed in California (A63511) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in San Diego.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mr. Arthur Anthony Blain Iv M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show Arthur Blain reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 526 clinicians in this Medicare group
San Diego, CA 92101
- Reassigned Medicare billing, California enrollment
- 105 clinicians in this Medicare group
San Diego, CA 92108
- Reassigned Medicare billing, California enrollment
- 43 clinicians in this Medicare group
Colton, CA 92324
- Reassigned Medicare billing, California enrollment
- 233 clinicians in this Medicare group
Winterhaven, CA 92283
- Reassigned Medicare billing, Texas enrollment
- 59 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
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 Arthur Blain's NPI number?
The NPI number for Arthur Blain is 1801816525. It was assigned to this individual provider in the NPPES registry on July 19, 2006.
Where is Arthur Blain located?
Arthur Blain practices at 200 W Arbor Dr, San Diego, CA 92103. The listed phone number is (800) 926-8273.
What is Arthur Blain's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Arthur Blain enrolled in Medicare?
Yes. Arthur Blain is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Arthur Blain's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Arthur Blain reassigns Medicare benefits to 5 organizations: Regents Of The University Of California (San Diego, CA), County Of San Diego (San Diego, CA), Pouya Afshar MD Inc (San Diego, CA), County Of San Bernardino (Colton, CA) and Dhhs Phs Ihs Phoenix Area (Winterhaven, 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 Arthur Blain's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Arthur Blain accept?
Health plans from Anthem Blue Cross and Blue Shield list Arthur Blain as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Arthur Blain was last updated on August 25, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Arthur Anthony Blain IV, M.D. · NPI 1801816525
Family Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since July 19, 2006.
## Identity
- **NPI:** 1801816525 (Entity type: Individual)
- **Enumerated:** July 19, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** A63511 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 W ARBOR DR, San Diego, CA 92103-9000
- **Phone:** (800) 926-8273
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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 1003934803, San Diego, CA); County Of San Diego (NPI 1225255375, San Diego, CA); Pouya Afshar MD Inc (NPI 1710336094, San Diego, CA); County Of San Bernardino (NPI 1982813275, Colton, CA); Dhhs Phs Ihs Phoenix Area (NPI 1265719918, Winterhaven, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 25, 2023
- **Other identifiers:** Other 00A635110 (CA); Other CB228972; Other P01455185
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Source: [NPI Profile](https://npiprofile.com/npi/1801816525) · Data from the CMS NPPES public registry.