John Ronald Gurskis, M.D.
Specialist · Fountain Valley, CA
John Ronald Gurskis, M.D. is a specialist with a practice address in Fountain Valley, California, and NPI 1417010182, issued on Dec 17, 2006. Check the license (California G050055, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Ronald Gurskis
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- G050055 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10840 Warner Ave, Fountain Valley, CA 92708
- Phone
- (714) 962-3661
- Enumerated
- Dec 17, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100616000152); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 1982
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 10840 Warner Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph Le, D.C.Chiropractor1205154051
Verify John Ronald Gurskis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G050055Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% more Medicare Part D claims than the average specialist in 2024
1,531 Medicare Part D claims for 233 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 907 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen304 claims
- Oxycodone-Acetaminophen158 claims
- Oxycodone Hcl145 claims
- Gabapentin127 claims
- Tizanidine Hcl83 claims
- Morphine Sulfate Er68 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.
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $99.20
4 payments; by number, the most common kind was food and beverage; the largest payer was Collegium Pharmaceutical, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 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.
John Ronald Gurskis among 5,749 specialist records in California
John Ronald Gurskis, M.D. is one of 5,749 specialist records with a practice address in California. 30% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1982 · median 1989 among the 1,075 with a school on file
- Record last updated2007 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
34 specialist records list a practice address in Fountain Valley
They are 34 of the 2,190 NPPES records with a practice address in Fountain Valley, and 5,749 specialist records in California.
All 5,749 in California → Every provider in Fountain Valley → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Mir Ali, MDFountain Valley, CA 927081184689663
- Viet Be, M.D.Fountain Valley, CA 927081437118650
- Philip Chin, M.D.Fountain Valley, CA 927081548224629
- Himmet Dajee, MDFountain Valley, CA 927081124082730
- Kelly Francis, M.D.Fountain Valley, CA 927081497719504
- Haresh Jhangiani, M.D.Fountain Valley, CA 927081578566998
- Jane Kakkis, M.D.Fountain Valley, CA 927081598715427
- Peter Leport, M.D.Fountain Valley, CA 927081932163532
Common questions
What is John Ronald Gurskis, M.D.'s NPI number?
John Ronald Gurskis, M.D.'s National Provider Identifier (NPI) is 1417010182, issued on Dec 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Ronald Gurskis, M.D. located?
The NPPES record lists a practice address at 10840 Warner Ave, Fountain Valley, CA, 92708. Phone: (714) 962-3661. Providers update this record themselves, so call before visiting.
How can I verify John Ronald Gurskis, M.D.'s license?
NPPES lists California license number G050055, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does John Ronald Gurskis, M.D. prescribe under Medicare Part D?
In 2024, John Ronald Gurskis, M.D. had 1,531 Medicare Part D claims for 233 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is John Ronald Gurskis, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.