Jacob Spivak, MD
Surgery Physician · Walnut Creek, CA
Jacob Spivak, MD is a surgery physician with a practice address in Walnut Creek, California, and NPI 1649306283, issued on Feb 26, 2007. Check the license (California A78970, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jacob Spivak
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- A78970 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1425 S Main St, Walnut Creek, CA 94596
- Phone
- (925) 295-7854
- Enumerated
- Feb 26, 2007
- Record last updated
- Dec 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20071019000222); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 1425 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Derek Abbassi, MDObstetrics & Gynecology Physician1841364155
- Peter Ackerman, MDEmergency Medicine Physician1427435023
- Aaron Mark Acosta, DOEmergency Medicine Physician1538789987
- Basil Adad, MDOtolaryngology Physician1487732574
- Derek Ailes, M.D.Emergency Medical Services (Emergency Medicine) Physician1992001804
Verify Jacob Spivak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A78970Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average surgery physician in 2024
72 Medicare Part D claims for 25 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 18 claims were for opioids.
Most prescribed
- Ondansetron Odt20 claims
- Ibuprofen19 claims
- Oxycodone Hcl18 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
- Permanente Medical Group IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jacob Spivak among 3,118 surgery physician records in California
Jacob Spivak, MD is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 42% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2006 · median 2003 among the 1,901 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Walnut Creek → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Aaron Chin, M.D.Walnut Creek, CA 945961093163271
- Anita Chiu, M.D.Walnut Creek, CA 945961740426618
- James Choi, MDWalnut Creek, CA 945961215016977
- Steven Freshman, MDWalnut Creek, CA 945961538247697
- William Greif, MDWalnut Creek, CA 945961013095108
- Teresa Kim, M.D.Walnut Creek, CA 945961386663433
- Gabrielle Levine, MDWalnut Creek, CA 945961851479919
- Thomas Macpherson, MDWalnut Creek, CA 945961366520454
Common questions
What is Jacob Spivak, MD's NPI number?
Jacob Spivak, MD's National Provider Identifier (NPI) is 1649306283, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jacob Spivak, MD located?
The NPPES record lists a practice address at 1425 S Main St, Walnut Creek, CA, 94596. Phone: (925) 295-7854. Providers update this record themselves, so call before visiting.
How can I verify Jacob Spivak, MD's license?
NPPES lists California license number A78970, 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 Jacob Spivak, MD prescribe under Medicare Part D?
In 2024, Jacob Spivak, MD had 72 Medicare Part D claims for 25 beneficiaries; the average among surgery physician prescribers was 147. 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.