FREDERICA S. LOFQUIST M.D.
NPI 1750458873
Obstetrics & Gynecology in San Francisco, CA
About Frederica S. Lofquist M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
FREDERICA S. LOFQUIST M.D. (NPI 1750458873) is an individual obstetrics & gynecology provider in San Francisco, California, licensed in Washington (MD61485190) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS, maintains a secondary practice location in Port Townsend, and is a graduate of Stanford University School Of Medicine (1987).
NPPES Registry Identity
Specialties & Licenses 3
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
Frederica S. Lofquist 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
5Medicare enrollment records show Frederica Lofquist reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94123
- Reassigned Medicare billing, California enrollment
- 678 clinicians in this Medicare group
Reedley, CA 93654
- Reassigned Medicare billing, California enrollment
- 315 clinicians in this Medicare group
Silverdale, WA 98383
- Reassigned Medicare billing, Washington enrollment
- Also billed through NPI 1356492953 (Washington)
- 208 clinicians in this Medicare group
Silverdale, WA 98383
- Reassigned Medicare billing, Washington enrollment
- 223 clinicians in this Medicare group
Greenville, SC 29607
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Obhg California PC
- 711 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 94118 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.
SAN FRANCISCO, CA 94118
SAN FRANCISCO, CA 94118
SAN FRANCISCO, CA 94118
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 Frederica Lofquist's NPI number?
The NPI number for Frederica Lofquist is 1750458873. It was assigned to this individual provider in the NPPES registry on November 30, 2006.
Where is Frederica Lofquist located?
Frederica Lofquist practices at 3838 California St 316, San Francisco, CA 94118. The listed phone number is (415) 379-9600.
What is Frederica Lofquist's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Frederica Lofquist enrolled in Medicare?
Yes. Frederica Lofquist 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 Frederica Lofquist's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Frederica Lofquist reassigns Medicare benefits to 5 organizations: Adventist Health Physicians Network (San Francisco, CA), Reedley Community Hospital (Reedley, CA), Jefferson County Public Hospital District No 2 (Silverdale, WA), Obhg Washington, PC (Silverdale, WA) and Obhg California, P.C. (Greenville, SC). 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 Frederica Lofquist's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Frederica Lofquist accept?
Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Frederica Lofquist 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 Frederica Lofquist was last updated on December 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Frederica S. Lofquist, M.D. · NPI 1750458873
Obstetrics & Gynecology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since November 30, 2006.
## Identity
- **NPI:** 1750458873 (Entity type: Individual)
- **Enumerated:** November 30, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** MD61485190 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 3838 CALIFORNIA ST, 316, San Francisco, CA 94118-1522
- **Phone:** (415) 379-9600 · **Fax:** (415) 379-9823
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Adventist Health Physicians Network (NPI 1174820344, San Francisco, CA); Reedley Community Hospital (NPI 1336167550, Reedley, CA); Jefferson County Public Hospital District No 2 (NPI 1467664631, Silverdale, WA); Obhg Washington, PC (NPI 1962729525, Silverdale, WA); Obhg California, P.C. (NPI 1215258892, Greenville, SC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Stanford University School Of Medicine, class of 1987
## Record status
- **NPPES last updated:** December 9, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1750458873) · Data from the CMS NPPES public registry.