Jack Douglas Clark, M.D.
Ophthalmology Physician · Fresno, CA
Jack Douglas Clark, M.D. is an ophthalmology physician with a practice address in Fresno, California, and NPI 1265571608, issued on Feb 5, 2007. Check the license (California G56196, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jack Douglas Clark
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G56196 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7112 N Fresno St, Fresno, CA 93720
- Phone
- (559) 439-1620
- Enumerated
- Feb 5, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (559) 432-6579
- Medicaid ID
- 00G561960 CA
- Medicare enrollment
- Enrolled (PECOS I20090203000676); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1984
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 7112 N Fresno St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wafaa Araim, PHARMDPharmacist1497292478
Verify Jack Douglas Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G56196Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average ophthalmology physician in 2024
765 Medicare Part D claims for 171 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Latanoprost302 claims
- Neomycin-Polymyxin-Dexameth150 claims
- Timolol Maleate87 claims
- Brimonidine Tartrate67 claims
- Prednisolone Acetate27 claims
- Dorzolamide-Timolol23 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.
Bills Medicare through one group practice
- Camarena HealthMadera, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jack Douglas Clark among 2,899 ophthalmology physician records in California
Jack Douglas Clark, M.D. is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1984 · median 2001 among the 1,907 with a school on file
- Record last updated2007 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Fresno → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Maziar Bidar, MDFresno, CA 937201689693657
- Frank Bishop, M.D.Fresno, CA 937201538134796
- Steven Fogg, M.D.Fresno, CA 937201982666871
- Andrea Lanier, M.D.Fresno, CA 937201750343158
- Christopher Larson, M.D.Fresno, CA 937201588699656
- Larry Lawrence, M.D.Fresno, CA 937201164425468
- William Maxwell, M.D.Fresno, CA 937201205898681
- Eric Poulsen, M.D.Fresno, CA 937201003819301
Common questions
What is Jack Douglas Clark, M.D.'s NPI number?
Jack Douglas Clark, M.D.'s National Provider Identifier (NPI) is 1265571608, issued on Feb 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jack Douglas Clark, M.D. located?
The NPPES record lists a practice address at 7112 N Fresno St, Fresno, CA, 93720. Phone: (559) 439-1620. Providers update this record themselves, so call before visiting.
How can I verify Jack Douglas Clark, M.D.'s license?
NPPES lists California license number G56196, 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 Jack Douglas Clark, M.D. prescribe under Medicare Part D?
In 2024, Jack Douglas Clark, M.D. had 765 Medicare Part D claims for 171 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.