James Robert Greenbarg, M.D.
Surgery Physician · Turlock, CA
James Robert Greenbarg, M.D. is a surgery physician with a practice address in Turlock, California, and NPI 1619990355, issued on Jul 25, 2006. Check the license (California G80805, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Robert Greenbarg
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- G80805 CA
Self-reported in NPPES; status is on the state search - Practice location
- 701 E Olive Ave, Turlock, CA 95380
- Phone
- (209) 661-4403
- Enumerated
- Jul 25, 2006
- Record last updated
- May 11, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (209) 632-6662
- Medicaid ID
- 00G808050 CA
- Medicare enrollment
- Enrolled (PECOS I20060915000525); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1985
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Verify James Robert Greenbarg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G80805Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average surgery physician in 2024
113 Medicare Part D claims for 59 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 44 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen41 claims
- Ibuprofen27 claims
- Ondansetron Hcl12 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: $933.52
5 payments; by number, the most common kind was travel and lodging; the largest payer was Intuitive Surgical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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.
James Robert Greenbarg among 3,118 surgery physician records in California
James Robert Greenbarg, M.D. 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1985 · median 2003 among the 1,901 with a school on file
- Record last updated2020 · 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 Turlock → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Daryl Bailie, M.D.Turlock, CA 953821255445557
- Paul Carmichael, MDTurlock, CA 953821972564037
- Huy Dao, DOTurlock, CA 953821689694689
- Thomas Hoak, M.D.Turlock, CA 953821811308539
- Zhong Wang, MDTurlock, CA 953821962769497
- Philip Ding, MDTracy, CA 953761023285400
- John Mast, MDTracy, CA 953761508807561
- Duc Nguyen, MDTracy, CA 953761356315410
Common questions
What is James Robert Greenbarg, M.D.'s NPI number?
James Robert Greenbarg, M.D.'s National Provider Identifier (NPI) is 1619990355, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Robert Greenbarg, M.D. located?
The NPPES record lists a practice address at 701 E Olive Ave, Turlock, CA, 95380. Phone: (209) 661-4403. Providers update this record themselves, so call before visiting.
How can I verify James Robert Greenbarg, M.D.'s license?
NPPES lists California license number G80805, 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 Robert Greenbarg, M.D. prescribe under Medicare Part D?
In 2024, James Robert Greenbarg, M.D. had 113 Medicare Part D claims for 59 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.