Natalie R. Sacks, M.D.
Medical Oncology Physician · San Francisco, CA
Natalie R. Sacks, M.D. is a medical oncology physician with a practice address in San Francisco, California, and NPI 1851590897, issued on Jul 11, 2007. Check the license (California A63551, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Natalie R. Sacks
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- A63551 CA
Self-reported in NPPES; status is on the state search - Practice location
- 995 Potrero Ave, San Francisco, CA 94110
- Phone
- (415) 476-4082
- Enumerated
- Jul 11, 2007
- Record last updated
- Jul 11, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (415) 476-6953
- Medicaid ID
- 00A635510 CA
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 447 in California → Look up another NPI →
Also registered at 995 Potrero Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Gloria AlonzoContractor1417378316
- Martha Baer, RNRegistered Nurse1750226262
- Suzanne Barakat, M.D.Student in an Organized Health Care Education/Training Program1851703946
- George Beatty, MDInternal Medicine Physician1649387457
- Ignacio Becerra-Licha, M.D.Student in an Organized Health Care Education/Training Program1215374418
Verify Natalie R. Sacks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A63551Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Natalie R. Sacks among 447 medical oncology physician records in California
Natalie R. Sacks, M.D. is one of 447 medical oncology physician records with a practice address in California. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 44% newer
- In a Medicare fileNo · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2007 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in California
There are 447 medical oncology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 447 in California → Every provider in San Francisco → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Judith Luce, MDSan Francisco, CA 941101073628400
- Stephen Sherwin, M.D.San Francisco, CA 941101437461431
- Ana Velazquez, MD MSCSan Francisco, CA 941101144647421
- Christopher Benz, M.D.San Francisco, CA 941151457381014
- Emily Bergsland, MDSan Francisco, CA 941151295792729
- John Berry, M.D.San Francisco, CA 941151942236997
- Charles Dollbaum, M.D.San Francisco, CA 941151205863552
- Thierry Jahan, MDSan Francisco, CA 941151427007657
Common questions
What is Natalie R. Sacks, M.D.'s NPI number?
Natalie R. Sacks, M.D.'s National Provider Identifier (NPI) is 1851590897, issued on Jul 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Natalie R. Sacks, M.D. located?
The NPPES record lists a practice address at 995 Potrero Ave, San Francisco, CA, 94110. Phone: (415) 476-4082. Providers update this record themselves, so call before visiting.
How can I verify Natalie R. Sacks, M.D.'s license?
NPPES lists California license number A63551, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.