Patricia L. Seid, MD
Radiation Oncology Physician · Napa, CA
Patricia L. Seid, MD is a radiation oncology physician with a practice address in Napa, California, and NPI 1710994520, issued on Aug 2, 2006. Check the license (California A83016, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Patricia L. Seid
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A83016 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Trancas Street, Napa, CA 94558
- Phone
- (707) 252-4411
- Enumerated
- Aug 2, 2006
- Record last updated
- Nov 15, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (707) 252-2240
- Medicaid ID
- 00A830160 CA
- Medicare enrollment
- Enrolled (PECOS I20060918000508); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 1000 Trancas Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Faramarz Mottalei, MDEmergency Medicine Physician1508881509
- Andrew Nicks, MDDiagnostic Radiology Physician1326014820
- Timothy Smith, DOEmergency Medicine Physician1003856931
Verify Patricia L. Seid in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A83016Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average radiation oncology physician in 2024
46 Medicare Part D claims for 31 beneficiaries, against an average of 134 among the 4,851 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.
Industry payments in 2024: $128.91
2 payments; by number, the most common kind was food and beverage; the largest payer was Siemens Medical Solutions USA, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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
- Northern California Radiation Therapists And Oncologists Medical GroupSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Patricia L. Seid among 735 radiation oncology physician records in California
Patricia L. Seid, MD is one of 735 radiation 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2001 · median 2005 among the 545 with a school on file
- Record last updated2016 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in Napa → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Christian Anderson, M.D.Napa, CA 945581235160730
- Bhavani Gannavarapu, M.D.Napa, CA 945581730536988
- James Knister, M.D.Napa, CA 945581164459061
- Michael Forrest, MDDublin, CA 945681700859352
- Minh-Phuong Huynh-Le, MDDublin, CA 945681821338682
- Anand Parthasarathy, MD, MPHDublin, CA 945681215063094
- Gautam Prasad, M.D.Dublin, CA 945681275755621
- Amish Shah, M.D.Dublin, CA 945681629129341
Common questions
What is Patricia L. Seid, MD's NPI number?
Patricia L. Seid, MD's National Provider Identifier (NPI) is 1710994520, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Patricia L. Seid, MD located?
The NPPES record lists a practice address at 1000 Trancas Street, Napa, CA, 94558. Phone: (707) 252-4411. Providers update this record themselves, so call before visiting.
How can I verify Patricia L. Seid, MD's license?
NPPES lists California license number A83016, 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 Patricia L. Seid, MD prescribe under Medicare Part D?
In 2024, Patricia L. Seid, MD had 46 Medicare Part D claims for 31 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.