Mark R. Christensen, O.D.
Optometrist · Fairfield, CA
Mark R. Christensen, O.D. is an optometrist with a practice address in Fairfield, California, and NPI 1518038108, issued on Nov 13, 2006. Check the license (California OPT 7874 TPA, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark R. Christensen
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OPT 7874 TPA CA
Self-reported in NPPES; status is on the state search - Practice location
- 1710 Pennsylvania Ave, Fairfield, CA 94533
- Phone
- (707) 425-2187
- Enumerated
- Nov 13, 2006
- Record last updated
- Feb 8, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (707) 434-8130
- Medicaid ID
- SD0078740 CA
- Medicare enrollment
- Enrolled (PECOS I20070801000475); may accept Medicare assignment
- Medical or professional school
- Pacific University - College Of Optometry, 1983
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 1710 Pennsylvania Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frank Hull, MDOphthalmology Physician1720071327
- Kristin Woodbury, D.O.Otolaryngic Allergy Physician1861614067
- Murray Woolf, MDOtolaryngology Physician1073531356
Verify Mark R. Christensen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OPT 7874 TPACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average optometrist in 2024
33 Medicare Part D claims for 21 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 64% of 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: $42.34
2 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 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.
Mark R. Christensen among 8,308 optometrist records in California
Mark R. Christensen, O.D. is one of 8,308 optometrist records with a practice address in California. 67% 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, 66% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated1983 · median 2008 among the 3,573 with a school on file
- Record last updated2010 · 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 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in California
There are 8,308 optometrist records in California.
All 8,308 in California → Every provider in Fairfield → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Cinthia Chan, O.D.Fairfield, CA 945331962533273
- Michael Chin, O.D.Fairfield, CA 945331962569665
- Rozanne Fratto, O.D.Fairfield, CA 945331174688055
- Cory Hakanen, O.D.Fairfield, CA 945331265831564
- Arlene Huynh, O.D.Fairfield, CA 945331912254582
- David Meltzer, O.D.Fairfield, CA 945331952454712
- Malalai Mojaddidi, ODFairfield, CA 945331427146273
- Nancy Ohama, O.D.Fairfield, CA 945331033276894
Common questions
What is Mark R. Christensen, O.D.'s NPI number?
Mark R. Christensen, O.D.'s National Provider Identifier (NPI) is 1518038108, issued on Nov 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark R. Christensen, O.D. located?
The NPPES record lists a practice address at 1710 Pennsylvania Ave, Fairfield, CA, 94533. Phone: (707) 425-2187. Providers update this record themselves, so call before visiting.
How can I verify Mark R. Christensen, O.D.'s license?
NPPES lists California license number OPT 7874 TPA, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mark R. Christensen, O.D. prescribe under Medicare Part D?
In 2024, Mark R. Christensen, O.D. had 33 Medicare Part D claims for 21 beneficiaries; the average among optometrist prescribers was 277. 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.