Jessica Margaret Dzubnar Barker, MD
Surgical Oncology Physician · San Francisco, CA
Jessica Margaret Dzubnar Barker, MD is a surgical oncology physician with a practice address in San Francisco, California, and NPI 1700349750, issued on Apr 8, 2019. Check the license (California A181738, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jessica Margaret Dzubnar Barker
- Credential
- MD
- Primary taxonomy
- Surgical Oncology Physician 2086X0206X
- License number
- A181738 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1825 4TH St FL 3, San Francisco, CA 94143
- Phone
- (415) 353-7070
- Enumerated
- Apr 8, 2019
- Record last updated
- Jul 14, 2026
- Medicare enrollment
- Enrolled (PECOS I20260609002776); may accept Medicare assignment
- Medical or professional school
- Oakland Univ, William Beaumont School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest surgical oncology physician records → All 250 in California → Look up another NPI →
Also registered at 1825 4TH St FL 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tiffany Brown, DNPNurse Practitioner1720699028
- Mary Scott Bugg, APRNWomen's Health Nurse Practitioner1215542394
- Jenna DranFamily Nurse Practitioner1710498613
- Braeden Ego, MSGenetic Counselor (M.S.)1356015010
- Sheri Foote, CNMAdvanced Practice Midwife1528140621
- Sharon GeeClinical Social Worker1891976627
Verify Jessica Margaret Dzubnar Barker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A181738Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average surgical oncology physician in 2024
19 Medicare Part D claims, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D.
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.
Jessica Margaret Dzubnar Barker among 250 surgical oncology physician records in California
Jessica Margaret Dzubnar Barker, MD is one of 250 surgical oncology physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 94% of them.
- NPI issued2019 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2019 · median 2004 among the 184 with a school on file
- Record last updated2026 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086X0206X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Oncology Physician providers in California
There are 250 surgical oncology physician records in California.
All 250 in California → Every provider in San Francisco → Surgical Oncology Physician nationwide →
The 8 surgical oncology physician records with the nearest ZIP codes
- Valerie Armstrong, MDSan Francisco, CA 941431871122911
- Laura Esserman, MDSan Francisco, CA 941431679537971
- Cheryl Ewing, MDSan Francisco, CA 941431710935028
- Sarah HartmanSan Francisco, CA 941431558822122
- Ivy HuangSan Francisco, CA 941431043601727
- Jordan Jackson, MDSan Francisco, CA 941431902268360
- Kimberly Kirkwood, MDSan Francisco, CA 941431669437810
- Michelle Mulder, MDSan Francisco, CA 941431851787675
Common questions
What is Jessica Margaret Dzubnar Barker, MD's NPI number?
Jessica Margaret Dzubnar Barker, MD's National Provider Identifier (NPI) is 1700349750, issued on Apr 8, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Jessica Margaret Dzubnar Barker, MD located?
The NPPES record lists a practice address at 1825 4TH St FL 3, San Francisco, CA, 94143. Phone: (415) 353-7070. Providers update this record themselves, so call before visiting.
How can I verify Jessica Margaret Dzubnar Barker, MD's license?
NPPES lists California license number A181738, 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 Jessica Margaret Dzubnar Barker, MD prescribe under Medicare Part D?
In 2024, Jessica Margaret Dzubnar Barker, MD had 19 Medicare Part D claims; the average among surgical oncology physician prescribers was 87. Part D covers Medicare prescriptions only.
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.