Ronald G. Jan, MD
Vascular Surgery Physician · Sacramento, CA
Ronald G. Jan, MD is a vascular surgery physician with a practice address in Sacramento, California, and NPI 1114018199, issued on Sep 27, 2006. Check the license (California G22975, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald G. Jan
- Credential
- MD
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License numbers
- G22975 CA
G229750 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5025 J St, Sacramento, CA 95819
- Phone
- (916) 288-0055
- Enumerated
- Sep 27, 2006
- Record last updated
- Feb 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (916) 288-0056
- Medicaid ID
- 00G229750 CA
- Medicare enrollment
- Enrolled (PECOS I20051019000538); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1971
- Entity
- Type 1 · individual
8 nearest vascular surgery physician records → All 580 in California → Look up another NPI →
Also registered at 5025 J St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Leslie Farmer, M.D.Internal Medicine Physician1366513624
- Ann Gerhardt, M.D.Internal Medicine Physician1659456887
- Godfrey Mix, D.P.M.Podiatrist1780609974
Verify Ronald G. Jan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G22975Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average vascular surgery physician in 2024
54 Medicare Part D claims for 15 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Xarelto14 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: $807.40
10 payments; by number, the most common kind was food and beverage; the largest payer was Atricure, 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.
Ronald G. Jan among 580 vascular surgery physician records in California
Ronald G. Jan, MD 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
- Graduated1971 · median 2003 among the 411 with a school on file
- Record last updated2013 · 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 Sacramento → Vascular Surgery Physician nationwide →
The 8 vascular surgery physician records with the nearest ZIP codes
- Ali Tajlil, M.D.Sacramento, CA 958191861579534
- Richard Ward, M.D.Sacramento, CA 958191841218690
- Kathryn Dilosa, MDSacramento, CA 958171417512195
- Nikunj Donde, MDSacramento, CA 958171235767617
- Nasim Hedayati, M.D.Sacramento, CA 958171396804878
- James Holcroft, M.D.Sacramento, CA 958171235112525
- Misty Dawn Humphries, M.D.Sacramento, CA 958171528040870
- Melissa Keller, M.D., PH.D.Sacramento, CA 958171679923841
Common questions
What is Ronald G. Jan, MD's NPI number?
Ronald G. Jan, MD's National Provider Identifier (NPI) is 1114018199, issued on Sep 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald G. Jan, MD located?
The NPPES record lists a practice address at 5025 J St, Sacramento, CA, 95819. Phone: (916) 288-0055. Providers update this record themselves, so call before visiting.
How can I verify Ronald G. Jan, MD's license?
NPPES lists California license number G22975, 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 Ronald G. Jan, MD prescribe under Medicare Part D?
In 2024, Ronald G. Jan, MD had 54 Medicare Part D claims for 15 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.