John Peter Zopfi, D.O
Surgery Physician · Fairfield, CA
John Peter Zopfi, D.O is a surgery physician with a practice address in Fairfield, California, and NPI 1275581886, issued on May 5, 2006. Check the license (California 20A5987, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Peter Zopfi
- Credential
- D.O
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 20A5987 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1860 Pennsylvania Ave., Fairfield, CA 94533
- Phone
- (707) 646-4180
- Enumerated
- May 5, 2006
- Record last updated
- Sep 10, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (707) 646-4185
- Medicare enrollment
- Enrolled (PECOS I20161103001906); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Verify John Peter Zopfi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A5987Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average surgery physician in 2024
75 Medicare Part D claims for 46 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 39 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen30 claims
- Cephalexin17 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: $371.32
8 payments; by number, the most common kind was food and beverage; the largest payer was Tela Bio, 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.
Bills Medicare through 2 group practices
- Northbay Health Medical FoundationFairfield, CA
- Northbay Physicians Surgery Center, LLCFairfield, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Peter Zopfi among 3,118 surgery physician records in California
John Peter Zopfi, D.O 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
- Graduated1986 · median 2003 among the 1,901 with a school on file
- Record last updated2015 · 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 Fairfield → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Courtney Chambers, M.D.Fairfield, CA 945331528154523
- William Fulton, D.O.Fairfield, CA 945331497831564
- Majid Kianmajd, DOFairfield, CA 945331396008389
- Robert Lanflisi, MDFairfield, CA 945331104811942
- Behrouz Jamnani, M.D.Fairfield, CA 945341275617771
- Haroon Mojaddidi, M.D.Fairfield, CA 945341477641223
- Patrick Berg, MDTravis Afb, CA 945351932593225
- Sarah Bradford, M.D.Travis Afb, CA 945351508205022
Common questions
What is John Peter Zopfi, D.O's NPI number?
John Peter Zopfi, D.O's National Provider Identifier (NPI) is 1275581886, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Peter Zopfi, D.O located?
The NPPES record lists a practice address at 1860 Pennsylvania Ave., Fairfield, CA, 94533. Phone: (707) 646-4180. Providers update this record themselves, so call before visiting.
How can I verify John Peter Zopfi, D.O's license?
NPPES lists California license number 20A5987, 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 John Peter Zopfi, D.O prescribe under Medicare Part D?
In 2024, John Peter Zopfi, D.O had 75 Medicare Part D claims for 46 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.