Mark Allen Ruben, M.D.
Dermatology Physician · Fairfield, CA
Mark Allen Ruben, M.D. is a dermatology physician with a practice address in Fairfield, California, and NPI 1497742084, issued on Sep 29, 2005. Check the license (California G75891, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Allen Ruben
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- G75891 CA
Self-reported in NPPES; status is on the state search - Practice location
- 480 Chadbourne RD 201, Fairfield, CA 94534
- Phone
- (707) 399-4500
- Enumerated
- Sep 29, 2005
- Record last updated
- Aug 18, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (707) 643-8810
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Verify Mark Allen Ruben in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G75891Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 74.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $95.23
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,250 providers of this specialty with any payment received $8,544.61 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 Allen Ruben among 2,083 dermatology physician records in California
Mark Allen Ruben, M.D. is one of 2,083 dermatology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2015 · 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 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in California
There are 2,083 dermatology physician records in California.
All 2,083 in California → Every provider in Fairfield → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Karl Beutner, M.D. PH.DFairfield, CA 945341649217936
- Ingrid Freeny, M.D.Fairfield, CA 945341750545620
- Dorota Korta, M.D., PH.D.Fairfield, CA 945341063822237
- Bien-Aimee Lau, M.DFairfield, CA 945341851699532
- Jonathan Banta, M.D.Travis Afb, CA 945351427440791
- Emily Patton, D.O.Travis Afb, CA 945351457713471
- Noel Chiu, MDAntioch, CA 945311861458259
- Philip Nelson, MDAntioch, CA 945311356429443
Common questions
What is Mark Allen Ruben, M.D.'s NPI number?
Mark Allen Ruben, M.D.'s National Provider Identifier (NPI) is 1497742084, issued on Sep 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Allen Ruben, M.D. located?
The NPPES record lists a practice address at 480 Chadbourne RD 201, Fairfield, CA, 94534. Phone: (707) 399-4500. Providers update this record themselves, so call before visiting.
How can I verify Mark Allen Ruben, M.D.'s license?
NPPES lists California license number G75891, 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.
What is Mark Allen Ruben, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.8 of 100, reported for the practice group. 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.