James Jerome Zimmerman, M.D.
Vascular Surgery Physician · Redwood City, CA
James Jerome Zimmerman, M.D. is a vascular surgery physician with a practice address in Redwood City, California, and NPI 1093729121, issued on Jul 27, 2006. Check the license (California G39110, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Jerome Zimmerman
- Credential
- M.D.
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License number
- G39110 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2900 Whipple Ave, Redwood City, CA 94062
- Phone
- (650) 366-0225
- Enumerated
- Jul 27, 2006
- Record last updated
- May 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (650) 367-6085
- Medicaid IDs
- 00G391100 CA
GR0052800 CA - Medicare enrollment
- Enrolled (PECOS I20080702000383); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1975
- Entity
- Type 1 · individual
8 nearest vascular surgery physician records → All 580 in California → Look up another NPI →
Also registered at 2900 Whipple Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gary Aron, M.D.Internal Medicine Physician1619984911
- Kathleen Berra, N.P.Nurse Practitioner1386698520
- Shalini Bhambani, M.D.Cardiovascular Disease Physician1558635474
- Barrett Bryan, MDInternal Medicine Physician1033133954
- Luis Castro, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1679587893
- Elaine Chien, MDObstetrics & Gynecology Physician1457423295
Verify James Jerome Zimmerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G39110Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average vascular surgery physician in 2024
206 Medicare Part D claims for 119 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D. 118 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen114 claims
- Clopidogrel58 claims
- Sulfamethoxazole-Trimethoprim17 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: $1,674.16
14 payments; by number, the most common kind was food and beverage; the largest payer was Penumbra, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 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
- Sutter Bay Medical FoundationSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Jerome Zimmerman among 580 vascular surgery physician records in California
James Jerome Zimmerman, M.D. is one of 580 vascular surgery 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1975 · median 2003 among the 411 with a school on file
- Record last updated2020 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular Surgery Physician providers in California
There are 580 vascular surgery physician records in California.
All 580 in California → Every provider in Redwood City → Vascular Surgery Physician nationwide →
The 8 vascular surgery physician records with the nearest ZIP codes
- Owen Palmer, M.D.Redwood City, CA 940611194907162
- Perry Shoor, M.D.San Carlos, CA 940701073527198
- Gregory Lukaszewicz, MDSouth San Francisco, CA 940801710065321
- George Lee, M.D.Mountain View, CA 940401730363581
- Raymond Shaheen, M.D., F.A.C.S.Mountain View, CA 940401114997434
- Tej Singh, MDMountain View, CA 940401366548901
- Hardeep Ahluwalia, M.D.Los Altos, CA 940241780885574
- Hernan Bazan, M.D.San Francisco, CA 941091073714358
Common questions
What is James Jerome Zimmerman, M.D.'s NPI number?
James Jerome Zimmerman, M.D.'s National Provider Identifier (NPI) is 1093729121, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Jerome Zimmerman, M.D. located?
The NPPES record lists a practice address at 2900 Whipple Ave, Redwood City, CA, 94062. Phone: (650) 366-0225. Providers update this record themselves, so call before visiting.
How can I verify James Jerome Zimmerman, M.D.'s license?
NPPES lists California license number G39110, 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 James Jerome Zimmerman, M.D. prescribe under Medicare Part D?
In 2024, James Jerome Zimmerman, M.D. had 206 Medicare Part D claims for 119 beneficiaries; the average among vascular surgery physician prescribers was 201. 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.