David Quillian Segars, M.D.
Family Medicine Physician · San Francisco, CA
David Quillian Segars, M.D. is a family medicine physician with a practice address in San Francisco, California, and NPI 1669458097, issued on Dec 18, 2005. Check the license (California G55446, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Quillian Segars
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G55446 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2645 Ocean Ave, San Francisco, CA 94132
- Phone
- (415) 452-1200
- Enumerated
- Dec 18, 2005
- Record last updated
- Dec 3, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (415) 452-1207
- Medicare enrollment
- Enrolled (PECOS I20070214000392); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 1981
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2645 Ocean Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Paula Arriaga, PAPhysician Assistant1417248337
- Lawrence Chao, M.D.Internal Medicine Physician1700896370
- Effat Danial, OPTICIANOptician1063850360
- Charles Delatore, M.D.Internal Medicine Physician1679560478
- Mary Granick, LMFTMarriage & Family Therapist1093956633
- Ziyad Hannon, M.D.Obstetrics & Gynecology Physician1942206560
Verify David Quillian Segars in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G55446Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% more Medicare Part D claims than the average family medicine physician in 2024
6,526 Medicare Part D claims for 509 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 213 claims were for opioids.
Most prescribed
- Atorvastatin Calcium436 claims
- Amlodipine Besylate386 claims
- Lisinopril275 claims
- Levothyroxine Sodium246 claims
- Metformin Hcl192 claims
- Losartan Potassium184 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 83.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $230.41
8 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Segars Medical GroupSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Quillian Segars among 17,133 family medicine physician records in California
David Quillian Segars, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1981 · median 2005 among the 10,652 with a school on file
- Record last updated2009 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Francisco → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Julie Brichard, M.DSan Francisco, CA 941321528440237
- Emilia De Marchis, MD, MASSan Francisco, CA 941321962814327
- Clarrissa Kripke, MDSan Francisco, CA 941321417905209
- Melody Lee, MDSan Francisco, CA 941321710017298
- Tenessa Mackenzie, MDSan Francisco, CA 941321508090887
- Anthony Mrgudich, M.D.San Francisco, CA 941321124358635
- Mukund Premkumar, MDSan Francisco, CA 941321477940997
- Teresa Rebeiro, MDSan Francisco, CA 941321700855400
Common questions
What is David Quillian Segars, M.D.'s NPI number?
David Quillian Segars, M.D.'s National Provider Identifier (NPI) is 1669458097, issued on Dec 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David Quillian Segars, M.D. located?
The NPPES record lists a practice address at 2645 Ocean Ave, San Francisco, CA, 94132. Phone: (415) 452-1200. Providers update this record themselves, so call before visiting.
How can I verify David Quillian Segars, M.D.'s license?
NPPES lists California license number G55446, 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.
How much does David Quillian Segars, M.D. prescribe under Medicare Part D?
In 2024, David Quillian Segars, M.D. had 6,526 Medicare Part D claims for 509 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is David Quillian Segars, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.8 of 100. 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.