Matthew C. Carnahan, MD
Ophthalmology Physician · Roseville, CA
Matthew C. Carnahan, MD is an ophthalmology physician with a practice address in Roseville, California, and NPI 1093893760, issued on Nov 1, 2006. Check the license (California A79822, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Matthew C. Carnahan
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A79822 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1600 Eureka RD, Roseville, CA 95661
- Phone
- (916) 784-4000
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110127000004); accepts Medicare assignment
- Medical or professional school
- R Franklin University Of Med & Sci/Chicago Medical School, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 1600 Eureka RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mohamad Adada, M.D., PHDHematology & Oncology Physician1528590734
- Scott Adams, MDPediatric Hematology & Oncology Physician1013067818
- Aleisha Anne Aguilar, NPStudent in an Organized Health Care Education/Training Program1053174953
Verify Matthew C. Carnahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A79822Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% more Medicare Part D claims than the average ophthalmology physician in 2024
2,618 Medicare Part D claims for 591 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Latanoprost1,131 claims
- Dorzolamide-Timolol325 claims
- Timolol Maleate215 claims
- Brimonidine Tartrate162 claims
- Prednisolone Acetate158 claims
- Cyclosporine106 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
- Southern California Permanente Medical GroupSan Marcos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew C. Carnahan among 2,899 ophthalmology physician records in California
Matthew C. Carnahan, MD 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1998 · median 2001 among the 1,907 with a school on file
- Record last updated2021 · 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 Roseville → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Mitra Ayazifar, MDRoseville, CA 956611972520641
- Richard Fentzke, MDRoseville, CA 956611417035163
- Darron Fors, M.D.Roseville, CA 956611679952758
- Arthur Glover, MDRoseville, CA 956611174601827
- Mujahid Hines, MDRoseville, CA 956611083806541
- Brian Rothlisberger, MDRoseville, CA 956611609893338
- Stephen Wilmarth, MDRoseville, CA 956611245240324
- Bruce Winters, M.D.Roseville, CA 956611386728954
Common questions
What is Matthew C. Carnahan, MD's NPI number?
Matthew C. Carnahan, MD's National Provider Identifier (NPI) is 1093893760, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Matthew C. Carnahan, MD located?
The NPPES record lists a practice address at 1600 Eureka RD, Roseville, CA, 95661. Phone: (916) 784-4000. Providers update this record themselves, so call before visiting.
How can I verify Matthew C. Carnahan, MD's license?
NPPES lists California license number A79822, 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 Matthew C. Carnahan, MD prescribe under Medicare Part D?
In 2024, Matthew C. Carnahan, MD had 2,618 Medicare Part D claims for 591 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.