MARY LOWEN MD
NPI 1609803386
Family Medicine in San Francisco, CA
About Mary Lowen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY LOWEN MD (NPI 1609803386) is an individual family medicine provider in San Francisco, California, licensed in California (G37005) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Mary Lowen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Lowen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Francisco, CA 94111
- Reassigned Medicare billing, California enrollment
- 291 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 94104 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 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN FRANCISCO, CA 94104
SAN FRANCISCO, CA 94104
SAN FRANCISCO, CA 94104
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 Mary Lowen's NPI number?
The NPI number for Mary Lowen is 1609803386. It was assigned to this individual provider in the NPPES registry on June 27, 2006.
Where is Mary Lowen located?
Mary Lowen practices at 110 Sutter St 6th Floor, San Francisco, CA 94104. The listed phone number is (415) 291-0480.
What is Mary Lowen's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Mary Lowen enrolled in Medicare?
Yes. Mary Lowen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Lowen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Lowen reassigns Medicare benefits to One Medical Group, Inc. (San Francisco, CA). The 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 Mary Lowen'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 Mary Lowen was last updated on August 27, 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.