NPI registry status
Active
2026 NPPES data Dermatology Physician NPI 1255490835 MD
Verify on CMS → Valentina Sosa, MD
Dermatology Physician in Los Angeles, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 14,645 in Dermatology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 304 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
77%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$108.51
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Valentina Sosa, MD filed 1,229 Medicare Part D claims in 2023 as a Dermatology Physician in Los Angeles, California, prescribing 77% generic.
- 1K
- Part D claims, 2023
- 77%
- generic prescribing
- $108.51
- industry payments (Sunshine Act)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Valentina Sosa, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,229 Top 22% higher than 78% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Valentina Sosa, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Valentina Sosa, MD?
Quality data not reportedPrimary specialty
Dermatology Physician
Medicare Part D claims
1,229 69% vs specialty avg
Specialty distribution in California
How Dermatology Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Dermatology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Valentina Sosa, MD appears in the CMS NPPES registry as a Dermatology Physician provider holding MD credentials at 4733 W SUNSET BLVD, Los Angeles, CA, 90027, with a listed phone of (323) 783-4011. NPI 1255490835 was issued on 12/08/2006.
Medicare Part D records for calendar year 2023 show 1,229 prescription claims written by this provider, covering 304 Medicare beneficiaries and totaling roughly $258K in drug spend, split 23% brand-name and 77% generic by claim count.
Dermatology Physician is a mid-sized specialty nationwide, with 14,645 enrolled providers across 53 states and an average of 729 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1255490835 |
|---|---|
| Specialty | Dermatology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 12/08/2006 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Valentina Sosa, MD. Source: openpaymentsdata.cms.gov.
Total received
$109
Largest payer
GlaxoSmithKline, LLC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Valentina Sosa, MD. To verify Valentina Sosa, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Valentina Sosa, MD - brand share 23.0%
Dermatology Physician average
23% brand-name claims vs 77% generic, on 1,229 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,229
Total Claims
$258K
Total Drug Cost
304
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,792
- Total Day Supply
- 52,296
- Brand vs Generic
- 23% brand / 77% generic
- Brand Drug Cost
- $205K
- Generic Drug Cost
- $53K
- Antibiotic Claims
- 46
Patient Demographics
- Average Patient Age
- 75.1 years
- Avg HCC Risk Score
- 1.11
- Gender Split
- 68% female / 32% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Valentina Sosa, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Retin-A
Retin-A
192 claims
- Ketoconazole
Ketoconazole
107 claims
- Clobetasol Propion…
Clobetasol Propionate
99 claims
- Betamethasone Dipr… 72
Betamethasone Diprop Augmented
72 claims
- Fluocinolone Aceto… 59
Fluocinolone Acetonide
59 claims
- Fluocinonide 52
Fluocinonide
52 claims
- Terbinafine Hcl 47
Terbinafine Hcl
47 claims
- Metronidazole 43
Metronidazole
43 claims
| Drug | Claims |
|---|---|
| Retin-A Tretinoin | 192 |
| Ketoconazole | 107 |
| Clobetasol Propionate | 99 |
| Betamethasone Diprop Augmented Betamethasone/Propylene Glyc | 72 |
| Fluocinolone Acetonide | 59 |
| Fluocinonide | 52 |
| Terbinafine Hcl | 47 |
| Metronidazole | 43 |
| Fluorouracil | 39 |
| Doxycycline Monohydrate | 38 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dermatology Physician Overview
How Valentina Sosa, MD fits within the Dermatology Physician landscape nationally.
14,645
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider
Valentina Sosa, MD's 1,229 claims are above the specialty average of 729.
Nearby Dermatology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Sosa.
Dr. Sumaira Aasi
MD
Stanford, CA
Dr. Christopher Abbott
M.D.
San Diego, CA
Dr. Eman Abdallah
D.O.
Los Angeles, CA
Dr. Farah Abdulla
MD
Duarte, CA
Dr. Sayyida Abdus-Salaam
M.D.
Daly City, CA
Compare Dermatology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Dermatology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore California
Frequently Asked Questions
What is Valentina Sosa, MD's specialty? ▼
Valentina Sosa, MD specializes in Dermatology Physician and practices in Los Angeles, California. Credentials: MD.
How much does Valentina Sosa, MD prescribe under Medicare Part D? ▼
In 2023, Valentina Sosa, MD wrote 1,229 Medicare Part D claims totaling $258K in drug costs for 304 beneficiaries.
Where is Valentina Sosa, MD located? ▼
Valentina Sosa, MD is located at 4733 W SUNSET BLVD, Los Angeles, CA, 90027. Phone: (323) 783-4011.
What is Valentina Sosa, MD's NPI number? ▼
Valentina Sosa, MD's National Provider Identifier (NPI) is 1255490835, issued on 12/08/2006.
Does Valentina Sosa, MD prescribe more brand-name or generic drugs? ▼
Valentina Sosa, MD's prescribing is 23% brand-name and 77% generic drugs by claim count, with $205K in brand drug costs.
How many Dermatology Physician providers are there in the US? ▼
There are 14,645 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does Valentina Sosa, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Valentina Sosa, MD's most frequently prescribed drugs include Retin-A, Ketoconazole, Clobetasol Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Valentina Sosa, MD accept Medicare? ▼
Valentina Sosa, MD appears in CMS Medicare data with 1,229 Part D claims and 304 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Valentina Sosa, MD's credentials? ▼
Valentina Sosa, MD's NPI is 1255490835 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.