DR. ALEXANDER DILLON M.D.
NPI 1699120212
Ophthalmology in Vallejo, CA
About Dr. Alexander Dillon M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALEXANDER DILLON M.D. (NPI 1699120212) is an individual ophthalmology provider in Vallejo, California, licensed in California (A168691) and active in the NPI registry since May 2016. He is enrolled in Medicare PECOS, is affiliated with Providence Holy Family Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Locations 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
Dr. Alexander Dillon 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
4Medicare enrollment records show Alexander Dillon reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Vallejo, CA 94589
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Concord, CA 94520
- Reassigned Medicare billing, California enrollment
- 7 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 842 clinicians in this Medicare group
Lancaster, CA 93535
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: County Of Los Angeles
- 1,939 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 9
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Providence Holy Family Hospital
Acute Care Hospitals · Spokane, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94589 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.
VALLEJO, CA 94589
VALLEJO, CA 94589
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 Alexander Dillon's NPI number?
The NPI number for Alexander Dillon is 1699120212. It was assigned to this individual provider in the NPPES registry on May 2, 2016.
Where is Alexander Dillon located?
Alexander Dillon practices at 975 Sereno Dr, Vallejo, CA 94589. The listed phone number is (707) 651-1042.
What is Alexander Dillon's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Alexander Dillon enrolled in Medicare?
Yes. Alexander Dillon 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 Alexander Dillon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Dillon reassigns Medicare benefits to 4 organizations: Permanente Medical Group Inc (Vallejo, CA), East Bay Retina Consultants A Medical Group, Inc. (Concord, CA), University Of California Sfgh Medical Group (San Francisco, CA) and County Of Los Angeles Auditor Controller (Lancaster, 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 Alexander Dillon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Alexander Dillon affiliated with any hospitals?
According to CMS data, Alexander Dillon is affiliated with Providence Holy Family Hospital.
When was this NPI record last updated?
The NPPES record for Alexander Dillon was last updated on April 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Alexander Dillon, M.D. · NPI 1699120212
Ophthalmology physician in Vallejo, California. Individual provider, active in the CMS NPPES registry since May 2, 2016.
## Identity
- **NPI:** 1699120212 (Entity type: Individual)
- **Enumerated:** May 2, 2016
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** A168691 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 975 SERENO DR, Vallejo, CA 94589-2441
- **Phone:** (707) 651-1042
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Permanente Medical Group Inc (NPI 1336222397, Vallejo, CA); East Bay Retina Consultants A Medical Group, Inc. (NPI 1124319959, Concord, CA); University Of California Sfgh Medical Group (NPI 1174598296, San Francisco, CA); County Of Los Angeles Auditor Controller (NPI 1366453045, Lancaster, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York University School Of Medicine, class of 2016
## Record status
- **NPPES last updated:** April 12, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1699120212) · Data from the CMS NPPES public registry.