James Patrick Decock, M.D
Family Medicine Physician · Lake Forest, CA
James Patrick Decock, M.D is a family medicine physician with a practice address in Lake Forest, California, and NPI 1720019904, issued on Jul 5, 2006. Check the license (California G81309, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Patrick Decock
- Credential
- M.D
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G81309 CA
Self-reported in NPPES; status is on the state search - Practice location
- 22855 Lake Forest Dr Ste A, Lake Forest, CA 92630
- Phone
- (949) 452-7544
- Enumerated
- Jul 5, 2006
- Record last updated
- Jan 10, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040917000736); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 22855 Lake Forest Dr Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Baron, P.APhysician Assistant1104861384
- Alan Berman, M.DEmergency Medicine Physician1396773636
- Stephen Misch, M.DFamily Medicine Physician1306877584
- Francis Wong, M.DFamily Medicine Physician1164453346
Verify James Patrick Decock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G81309Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
About as many Medicare Part D claims as the average family medicine physician in 2024
3,545 Medicare Part D claims for 320 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium271 claims
- Atorvastatin Calcium256 claims
- Levothyroxine Sodium124 claims
- Escitalopram Oxalate112 claims
- Lisinopril107 claims
- Losartan Potassium102 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: $200.58
9 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Patrick Decock among 17,133 family medicine physician records in California
James Patrick Decock, M.D is one of 17,133 family medicine physician records with a practice address in California. 81% 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, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1993 · median 2005 among the 10,652 with a school on file
- Record last updated2008 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 family medicine physician records list a practice address in Lake Forest
They are 14 of the 1,008 NPPES records with a practice address in Lake Forest, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Lake Forest → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Mohammed Ali, M.D.Lake Forest, CA 926301053405506
- Carol Barnes-Blanks, MDLake Forest, CA 926301720009152
- Chyle Beaird, M.D.Lake Forest, CA 926301043374473
- Adel Boutros, MDLake Forest, CA 926301700952827
- Gertrude Chancellor, FNP-BCLake Forest, CA 926301467944900
- Carrie Diramio, MDLake Forest, CA 926301790782993
- Michael Grossman, M.D.Lake Forest, CA 926301942367008
- Mary Koumas, D.O.Lake Forest, CA 926301306838909
Common questions
What is James Patrick Decock, M.D's NPI number?
James Patrick Decock, M.D's National Provider Identifier (NPI) is 1720019904, issued on Jul 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Patrick Decock, M.D located?
The NPPES record lists a practice address at 22855 Lake Forest Dr Ste A, Lake Forest, CA, 92630. Phone: (949) 452-7544. Providers update this record themselves, so call before visiting.
How can I verify James Patrick Decock, M.D's license?
NPPES lists California license number G81309, 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 Patrick Decock, M.D prescribe under Medicare Part D?
In 2024, James Patrick Decock, M.D had 3,545 Medicare Part D claims for 320 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.