Natalie Seiser, MD
Surgical Oncology Physician · Glendale, CA
Natalie Seiser, MD is a surgical oncology physician with a practice address in Glendale, California, and NPI 1255571949, issued on Feb 20, 2009. Check the license (California A106156, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Natalie Seiser
- Credential
- MD
- Primary taxonomy
- Surgical Oncology Physician 2086X0206X
- License number
- A106156 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1505 Wilson Ter Ste 150, Glendale, CA 91206
- Phone
- (818) 484-8049
- Enumerated
- Feb 20, 2009
- Record last updated
- Aug 18, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (818) 484-8059
- Medicare enrollment
- Enrolled (PECOS I20141126001232); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest surgical oncology physician records → All 250 in California → Look up another NPI →
Also registered at 1505 Wilson Ter Ste 150
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raffi Chalian, MDGynecologic Oncology Physician1184670408
- Tigran Khachatryan, MDNeurology Physician1982108981
Verify Natalie Seiser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A106156Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average surgical oncology physician in 2024
36 Medicare Part D claims for 19 beneficiaries, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen18 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: $42.76
1 payment: food and beverage; the largest payer was CooperSurgical, Inc. The 1,132 providers of this specialty with any payment received $4,224.74 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
- Academic Surgical Associates Inc.Glendale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Natalie Seiser among 250 surgical oncology physician records in California
Natalie Seiser, 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 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 36% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2006 · median 2004 among the 184 with a school on file
- Record last updated2020 · 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 Glendale → Surgical Oncology Physician nationwide →
The 8 surgical oncology physician records with the nearest ZIP codes
- Jeannie Shen, MDPasadena, CA 911051609969211
- Sherin Shirazi, M.D.Pasadena, CA 911051659438984
- Alicia Terando, M.D.Pasadena, CA 911051396877080
- Amir Ali Rahnemai Azar, M.D.Pasadena, CA 911021023339496
- George Barnes, MDValencia, CA 913551144293119
- Dortha Chu, MD., PHD,Valencia, CA 913551629227251
- Edgar Enriquez, M.D.Valencia, CA 913551376632547
- Gregory Senofsky, MDSanta Clarita, CA 913551982792891
Common questions
What is Natalie Seiser, MD's NPI number?
Natalie Seiser, MD's National Provider Identifier (NPI) is 1255571949, issued on Feb 20, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Natalie Seiser, MD located?
The NPPES record lists a practice address at 1505 Wilson Ter Ste 150, Glendale, CA, 91206. Phone: (818) 484-8049. Providers update this record themselves, so call before visiting.
How can I verify Natalie Seiser, MD's license?
NPPES lists California license number A106156, 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 Natalie Seiser, MD prescribe under Medicare Part D?
In 2024, Natalie Seiser, MD had 36 Medicare Part D claims for 19 beneficiaries; 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.