Frederica S. Lofquist, M.D.
Obstetrics & Gynecology Physician · San Francisco, CA
Frederica S. Lofquist, M.D. is an obstetrics & gynecology physician with a practice address in San Francisco, California, and NPI 1750458873, issued on Nov 30, 2006. Check the license (California G65301, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frederica S. Lofquist
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- G65301 CA
MD61485190 WA
Self-reported in NPPES; status is on the state search - Practice location
- 3838 California St, San Francisco, CA 94118
- Phone
- (415) 379-9600
- Enumerated
- Nov 30, 2006
- Record last updated
- Dec 9, 2025
- Fax
- (415) 379-9823
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 3838 California St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Catherine Berger-Dujmovic, MDObstetrics & Gynecology Physician1467470070
Verify Frederica S. Lofquist in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G65301Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 98.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Frederica S. Lofquist among 5,088 obstetrics & gynecology physician records in California
Frederica S. Lofquist, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2025 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in San Francisco → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Catherine Berger-Dujmovic, MDSan Francisco, CA 941181467470070
- Kathryn ClarkSan Francisco, CA 941181154349769
- Jacqueline Fletcher, M.D.San Francisco, CA 941181982796009
- Nelden HagbomSan Francisco, CA 941181467481655
- Holly HolterSan Francisco, CA 941181740219815
- Susan HuangSan Francisco, CA 941181518057322
- Madelyn Kahn, MDSan Francisco, CA 941181861576126
- Carl Otto, MDSan Francisco, CA 941181275551087
Common questions
What is Frederica S. Lofquist, M.D.'s NPI number?
Frederica S. Lofquist, M.D.'s National Provider Identifier (NPI) is 1750458873, issued on Nov 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frederica S. Lofquist, M.D. located?
The NPPES record lists a practice address at 3838 California St, San Francisco, CA, 94118. Phone: (415) 379-9600. Providers update this record themselves, so call before visiting.
How can I verify Frederica S. Lofquist, M.D.'s license?
NPPES lists California license number G65301, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Frederica S. Lofquist, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.