NPPES file of Aug 9, 2026

Natalie Marshall, M.D.

Medical Oncology Physician · Berkeley, CA

Natalie Marshall, M.D. is a medical oncology physician with a practice address in Berkeley, California, and NPI 1366445470, issued on May 23, 2005. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1366445470
Name
Natalie Marshall
Credential
M.D.
Primary taxonomy
Medical Oncology Physician 207RX0202X
License number
93-322 NM
Self-reported in NPPES; status is on the state search
Practice location
3100 San Pablo Ave., Berkeley, CA 94702
Phone
(510) 420-8000
Enumerated
May 23, 2005
Record last updated
Oct 12, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(510) 985-5202
Medicaid ID
10714 NM
Medicare enrollment
Enrolled (PECOS I20121119000577); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 1992
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 3100 San Pablo Ave.

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Gretchen Fulgencio, RN, NPFamily Nurse Practitioner1326421884
  2. Clifton Watt, M.D.Cardiovascular Disease Physician1104096551

Verify Natalie Marshall in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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52% more Medicare Part D claims than the average medical oncology physician in 2024

1,066 Medicare Part D claims for 270 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 11 claims were for opioids.

  1. Natalie Marshall1,066
  2. Specialty average703

Most prescribed

  1. Letrozole237 claims
  2. Tamoxifen Citrate183 claims
  3. Anastrozole170 claims
  4. Ondansetron Hcl61 claims
  5. Alendronate Sodium35 claims
  6. Gabapentin27 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.

Bills Medicare through one group practice

  1. Ucsf Medical Group Business ServicesBurlingame, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Medical Oncology Physician providers in California

There are 447 medical oncology physician records in California.

All 447 in California → Every provider in Berkeley →

Other medical oncology physician records in California

  1. Donald Abrams, MDSan Francisco, CA1679530018
  2. Ranjana Advani, MDStanford, CA1639225121
  3. Kambiz Afrasiabi, M.D.Anaheim, CA1578572368
  4. Mark Agulnik, MDLos Angeles, CA1164448734
  5. David Agus, M.D.Los Angeles, CA1356328249
  6. Weiyun Ai, MDSan Francisco, CA1649346842
  7. Shafqat Akhtar, MDRed Bluff, CA1700960788
  8. Luai Al Rabadi, M.D.San Francisco, CA1659637452
  9. Michael Alexander, MDSanta Cruz, CA1053321760
  10. Sandra AlgazeLos Angeles, CA1861886707

Common questions

What is Natalie Marshall, M.D.'s NPI number?

Natalie Marshall, M.D.'s National Provider Identifier (NPI) is 1366445470, issued on May 23, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Natalie Marshall, M.D. located?

The NPPES record lists a practice address at 3100 San Pablo Ave., Berkeley, CA, 94702. Phone: (510) 420-8000. Providers update this record themselves, so call before visiting.

How can I verify Natalie Marshall, M.D.'s license?

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 Marshall, M.D. prescribe under Medicare Part D?

In 2024, Natalie Marshall, M.D. had 1,066 Medicare Part D claims for 270 beneficiaries; the average among medical oncology physician prescribers was 703. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.