Sarah Brooke Fleisig, M.D.
Hematology & Oncology Physician · Napa, CA
Sarah Brooke Fleisig, M.D. is a hematology & oncology physician with a practice address in Napa, California, and NPI 1275827941, issued on May 31, 2011. Check the license (California A152713, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sarah Brooke Fleisig
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- A152713 CA
56695 CT
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Trancas St Ste 256, Napa, CA 94558
- Phone
- (707) 253-7161
- Enumerated
- May 31, 2011
- Record last updated
- May 22, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (707) 253-0476
- Medicare enrollment
- Enrolled (PECOS I20180925000928); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 1100 Trancas St Ste 256
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jill Hemingway, N.P.Nurse Practitioner1619057494
- Daniel Mirda, M.D.Hematology & Oncology Physician1811963317
- Ariana Moder, RDRegistered Dietitian1356916902
- Maria Montenegro, M.D.Family Medicine Physician1992719199
- Joanna Plumettaz, PAPhysician Assistant1588062145
- Kelsi Schoenrock, MDFamily Medicine Physician1427588755
Verify Sarah Brooke Fleisig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A152713Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
415 Medicare Part D claims for 53 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims. 31 claims were for opioids.
Most prescribed
- Ondansetron Hcl60 claims
- Dexamethasone41 claims
- Amlodipine Besylate20 claims
- Hydrocodone-Acetaminophen20 claims
- Xtandi17 claims
- Prochlorperazine Maleate16 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.
Industry payments in 2024: $27.63
1 payment: food and beverage; the largest payer was Tempus AI, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 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
- Alameda Health SystemOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sarah Brooke Fleisig among 1,583 hematology & oncology physician records in California
Sarah Brooke Fleisig, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2011 · median 2003 among the 1,124 with a school on file
- Record last updated2019 · 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 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Napa → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Paul Dugan, M.D.Napa, CA 945581992770069
- Daniel Mirda, M.D.Napa, CA 945581811963317
- Rakesh Bhutani, MDMartinez, CA 945531619055795
- Robert Johnson, MDMartinez, CA 945531083792659
- Nelson Lim, MDMartinez, CA 945531093786592
- John Patresan, MDMartinez, CA 945531023644978
- Lee Schwartz, M.D.Martinez, CA 945531356457857
- Lili Wang, M.D.Martinez, CA 945531942486246
Common questions
What is Sarah Brooke Fleisig, M.D.'s NPI number?
Sarah Brooke Fleisig, M.D.'s National Provider Identifier (NPI) is 1275827941, issued on May 31, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Sarah Brooke Fleisig, M.D. located?
The NPPES record lists a practice address at 1100 Trancas St Ste 256, Napa, CA, 94558. Phone: (707) 253-7161. Providers update this record themselves, so call before visiting.
How can I verify Sarah Brooke Fleisig, M.D.'s license?
NPPES lists California license number A152713, 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 Sarah Brooke Fleisig, M.D. prescribe under Medicare Part D?
In 2024, Sarah Brooke Fleisig, M.D. had 415 Medicare Part D claims for 53 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.