Dr. Christina Daria Fonseca, MD
- Part D claims, 2024
- 268
- Industry payments
- $322
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 1
- Practice address
- 901 Nevin Ave, Richmond, CA 94801
- Practice phone
- Call (510) 307-1555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Richmond Medical Center
Richmond, California
Find Dr. Fonseca's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Christina Daria Fonseca is a dermatologist in Richmond, California
Dr. Fonseca practices at Richmond Medical Center in Richmond, California.
Dr. Fonseca's NPI, 1225222128, was assigned on September 4, 2007. Dr. Fonseca graduated from OU College of Medicine in 2006. Dr. Fonseca holds California license A101459.
- NPI
- 1225222128NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496893679
- NPI enumeration date
- September 4, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 307-1555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christina Daria Fonseca practices at Richmond Medical Center in Richmond, California
Dr. Fonseca's primary practice is Richmond Medical Center, at 901 Nevin Ave, Richmond, CA 94801 in Contra Costa County. The practice phone is (510) 307-1555.
- Richmond Medical Center901 Nevin Ave, Richmond, CA 94801 · Contra Costa CountyPhone(510) 307-1555
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Christina Daria Fonseca is affiliated with 2 sites of care and 1 medical group
Dr. Fonseca's primary practice is Richmond Medical Center in Richmond, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Fonseca to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Christina Daria Fonseca's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fonseca practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Richmond Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christina Daria Fonseca is one of 1,910 dermatologists in California
Dermatology is Dr. Fonseca's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Fonseca is board certified in dermatology by the American Board of Dermatology. Dr. Fonseca is licensed in California.
Specialties and state licenses
- Dermatology, CaliforniaPrimary
Dermatologists near Dr. Fonseca
Counts of dermatologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Christina Daria Fonseca's patients have a median age of 46
Across all payers, Dmand AI patient panel data puts Dr. Fonseca's median patient age at 46, with 65% women.
Dr. Fonseca's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women65%
- Men35%
Source: Dmand AI Patient Panel Data
Dr. Christina Daria Fonseca wrote 268 Medicare Part D claims in 2024
In 2024, Dr. Fonseca wrote 268 Medicare Part D claims for 115 patients. 82% of them were for generic drugs. CMS names the drug for 130 of them, across 6 drugs with 11 or more claims each, at $5,272 in total drug cost. In 2023, CMS named 159 claims across 8 drugs.
Dr. Fonseca's Part D claims by kind of drug, 2024
- Generic220 claims82%
- Brand-name48 claims18%
Dr. Fonseca's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Fonseca's Part D claims, 2024
- Antibiotics7%19 of 268 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1592024: 13018%
Drugs named by CMS: 6 in 2024, 8 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Christina Daria Fonseca takes part in Medicare
Dr. Fonseca accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Christina Daria Fonseca received $322 in industry payments from 2018 to 2024
CMS Open Payments shows 4 general payments to Dr. Fonseca from 4 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $98.
General payments to Dr. Fonseca by program year, 2018 to 2024
Companies that paid Dr. Fonseca the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christina Daria Fonseca has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Fonseca, most recently AAD Fellow in 2011.
Awards and honors for Dr. Fonseca
- 2011
- AAD Fellow
- Undated
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Christina Daria Fonseca graduated from OU College of Medicine
Dr. Fonseca graduated from OU College of Medicine in 2006. Dr. Fonseca is a member of AAD.
- Medical school
- Board certified in dermatology
Source: Dmand AI Professional Profile Data
Dr. Christina Daria Fonseca accepts plans from 1 insurance carrier
Dr. Fonseca is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
Plan types Dr. Fonseca accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Christina Daria Fonseca's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Christina Daria Fonseca
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Christina Daria Fonseca's NPI number?
Dr. Christina Daria Fonseca's NPI number is 1225222128. It was assigned on September 4, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Christina Daria Fonseca?
Dr. Christina Daria Fonseca is a dermatologist in Richmond, California. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. Christina Daria Fonseca practice?
Dr. Fonseca practices at 901 Nevin Ave, Richmond, CA 94801. Dr. Fonseca's primary practice is Richmond Medical Center in Richmond, California. Dmand AI also links Dr. Fonseca to 1 group practice or clinic.
What is Dr. Christina Daria Fonseca's office phone number?
The practice phone on file for Dr. Fonseca is (510) 307-1555.
What is Dr. Christina Daria Fonseca's medical license number?
Dr. Fonseca holds California license A101459.
What medical group is Dr. Christina Daria Fonseca part of?
Dr. Fonseca is linked to The Permanente Medical Group, Inc.
Does Dr. Christina Daria Fonseca accept Medicare?
Yes. CMS lists Dr. Fonseca as accepting Medicare assignment.
Is Dr. Christina Daria Fonseca board certified?
Yes. Dr. Fonseca is board certified in dermatology by the American Board of Dermatology.
Where did Dr. Christina Daria Fonseca go to medical school?
Dr. Fonseca graduated from OU College of Medicine in 2006.
What drugs does Dr. Christina Daria Fonseca prescribe most?
In 2024 Medicare Part D data, Dr. Fonseca's most prescribed drugs by claims were Fluorouracil, Clobetasol Propionate and Calcipotriene.
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Has Dr. Christina Daria Fonseca received payments from drug or device companies?
CMS Open Payments shows $322 in general payments to Dr. Fonseca from 4 companies from 2018 to 2024. The largest total came from Pfizer Inc.
How long has Dr. Christina Daria Fonseca been practicing?
Dr. Fonseca graduated from medical school in 2006, 20 years ago.
What insurance does Dr. Christina Daria Fonseca accept?
Dr. Fonseca is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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