DR. RUHONG MA D.O.
NPI 1063679587
Internal Medicine in San Diego, CA
About Dr. Ruhong Ma D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RUHONG MA D.O. (NPI 1063679587) is an individual internal medicine provider in San Diego, California, licensed in California (20A13891) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS, maintains a secondary practice location in Encinitas, and is a graduate of Edward Via Col Of Osteo Medicine-virginia Campus (2008).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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. Ruhong Ma D.o. 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
7Medicare enrollment records show Ruhong Ma reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92115
- Reassigned Medicare billing, California enrollment
- 577 clinicians in this Medicare group
San Diego, CA 92111
- Reassigned Medicare billing, California enrollment
- 1,233 clinicians in this Medicare group
Temecula, CA 92592
- Reassigned Medicare billing, California enrollment
- 90 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 clinicians in this Medicare group
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 914 clinicians in this Medicare group
Vancouver, WA 98664
- Reassigned Medicare billing, Washington enrollment
- 915 clinicians in this Medicare group
Dallas, TX 75201
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Access Telecare California PC
- 194 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
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 92120 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 92120
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 Ruhong Ma's NPI number?
The NPI number for Ruhong Ma is 1063679587. It was assigned to this individual provider in the NPPES registry on May 21, 2008.
Where is Ruhong Ma located?
Ruhong Ma practices at 4647 Zion Ave, San Diego, CA 92120. The listed phone number is (619) 528-5435.
What is Ruhong Ma's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ruhong Ma enrolled in Medicare?
Yes. Ruhong Ma 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 Ruhong Ma's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruhong Ma reassigns Medicare benefits to 7 organizations: Centro De Salud De La Comunidad De San Ysidro, Inc. (San Diego, CA), Sharp Rees-Stealy Medical Group, Inc (San Diego, CA), Temecula Valley Hospitalist Medical Group, Inc. (Temecula, CA), Inpatient Specialists Of California, PC (San Bernardino, CA), Hospitalist Medicine Physicians Of California, Inc (Apple Valley, CA) and 2 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 Ruhong Ma's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ruhong Ma accept?
Health plans from Providence Health Plan list Ruhong Ma 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 Ruhong Ma was last updated on August 11, 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. Ruhong Ma, D.O. · NPI 1063679587
Internal Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since May 21, 2008.
## Identity
- **NPI:** 1063679587 (Entity type: Individual)
- **Enumerated:** May 21, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 20A13891 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4647 ZION AVE, San Diego, CA 92120
- **Phone:** (619) 528-5435
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Centro De Salud De La Comunidad De San Ysidro, Inc. (NPI 1205477841, San Diego, CA); Sharp Rees-Stealy Medical Group, Inc (NPI 1285616177, San Diego, CA); Temecula Valley Hospitalist Medical Group, Inc. (NPI 1265874135, Temecula, CA); Inpatient Specialists Of California, PC (NPI 1952792475, San Bernardino, CA); Hospitalist Medicine Physicians Of California, Inc (NPI 1184663965, Apple Valley, CA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Edward Via Col Of Osteo Medicine-Virginia Campus, class of 2008
## Record status
- **NPPES last updated:** August 11, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1063679587) · Data from the CMS NPPES public registry.