MR. HUMBERTO RETANA MS
NPI 1598955890
Marriage & Family Therapist in Oakland, CA
About Mr. Humberto Retana Ms NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. HUMBERTO RETANA MS (NPI 1598955890) is an individual marriage & family therapist in Oakland, California, licensed in California (49372) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS, maintains a secondary practice location in Oakland, and is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mr. Humberto Retana Ms is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Humberto Retana reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 2,112 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 1,159 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.
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.
OAKLAND, CA 94609
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 Humberto Retana's NPI number?
The NPI number for Humberto Retana is 1598955890. It was assigned to this individual provider in the NPPES registry on August 1, 2007. The provider is also known as Mr. Humberto Retana Mft.
Where is Humberto Retana located?
Humberto Retana practices at 770 53rd St, Oakland, CA 94609. The listed phone number is (510) 428-3441.
What is Humberto Retana's specialty?
The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.
Is Humberto Retana enrolled in Medicare?
Yes. Humberto Retana is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Humberto Retana's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Humberto Retana reassigns Medicare benefits to 4 organizations: Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Ucsf Pediatrics Associates (San Francisco, 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 Humberto Retana'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 Humberto Retana was last updated on January 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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. Humberto Retana, MS · NPI 1598955890
Marriage & Family Therapist provider in Oakland, California. Individual provider, active in the CMS NPPES registry since August 1, 2007.
## Identity
- **NPI:** 1598955890 (Entity type: Individual)
- **Enumerated:** August 1, 2007
- **Primary specialty:** Marriage & Family Therapist · taxonomy 106H00000X
- **State license:** 49372 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 770 53RD ST, Oakland, CA 94609-1814
- **Phone:** (510) 428-3441
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1235322348, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Ucsf Pediatrics Associates (NPI 1376614016, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** January 29, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1598955890) · Data from the CMS NPPES public registry.