Christopher Tomassian, MD
Dermatology Physician · Glendora, CA
Christopher Tomassian, MD is a dermatology physician with a practice address in Glendora, California, and NPI 1871097550, issued on Mar 19, 2018. Check the license (California 177939, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher Tomassian
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 177939 CA
Self-reported in NPPES; status is on the state search - Practice location
- 552 W Foothill Blvd Ste 202, Glendora, CA 91741
- Phone
- (818) 795-8252
- Enumerated
- Mar 19, 2018
- Record last updated
- Aug 24, 2022
- Medicare enrollment
- Enrolled (PECOS I20220926000357); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Kansas City, School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 552 W Foothill Blvd Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Virginia Jones, MDDermatology Physician1205412251
Verify Christopher Tomassian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 177939Check 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% more Medicare Part D claims than the average dermatology physician in 2024
1,194 Medicare Part D claims for 415 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Ketoconazole263 claims
- Triamcinolone Acetonide215 claims
- Clobetasol Propionate78 claims
- Hydrocortisone74 claims
- Dupixent Pen59 claims
- Doxycycline Monohydrate54 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: $44,418.60
59 payments; by number, the most common kind was food and beverage; the largest payer was Galderma Laboratories, L.P. 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.
Bills Medicare through one group practice
- Dermatology Collective IncGlendora, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Tomassian among 2,083 dermatology physician records in California
Christopher Tomassian, MD 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 2018, is newer than 86% of them.
- NPI issued2018 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2018 · median 2006 among the 1,450 with a school on file
- Record last updated2022 · 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 Glendora → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Daniel Gormley, MDGlendora, CA 917411386629210
- Virginia Jones, MDGlendora, CA 917411205412251
- Huyenlan Dinh, D.O.Glendora, CA 917401306257381
- Alyviah Durham, PA-CGlendora, CA 917401275289746
- Isabelle Sanchez, MD, MPHCity Of Industry, CA 917461790347631
- Lee Austin, MDRancho Cucamonga, CA 917301982702429
- Jack Griffith, DORancho Cucamonga, CA 917301407884315
- Ishrat Husain, MDRancho Cucamonga, CA 917301245320027
Common questions
What is Christopher Tomassian, MD's NPI number?
Christopher Tomassian, MD's National Provider Identifier (NPI) is 1871097550, issued on Mar 19, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Tomassian, MD located?
The NPPES record lists a practice address at 552 W Foothill Blvd Ste 202, Glendora, CA, 91741. Phone: (818) 795-8252. Providers update this record themselves, so call before visiting.
How can I verify Christopher Tomassian, MD's license?
NPPES lists California license number 177939, 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 Christopher Tomassian, MD prescribe under Medicare Part D?
In 2024, Christopher Tomassian, MD had 1,194 Medicare Part D claims for 415 beneficiaries; the average among dermatology physician prescribers was 797. 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.