NPI registry status
Active
2026 NPPES data Dermatology Physician NPI 1669869384 MD, PHD
Verify on CMS → Olga Afanasiev, MD, PHD
Dermatology Physician in Mountain View, 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 14,610 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
518
Medicare Part D claims · 209 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$2.8K
10 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
Olga Afanasiev, MD, PHD filed 518 Medicare Part D claims in 2023 as a Dermatology Physician in Mountain View, California, prescribing 93% generic.
- 518
- Part D claims, 2023
- 93%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Olga Afanasiev, MD, PHD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
518 Top 34% higher than 66% 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 certification likely (heuristic, not verified)
Olga Afanasiev, MD, PHD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Olga Afanasiev, MD, PHD?
Quality data not reportedPrimary specialty
Dermatology Physician
Medicare Part D claims
518 29% 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).
Olga Afanasiev, MD, PHD appears in the CMS NPPES registry as a Dermatology Physician provider holding MD, PHD credentials at 701 E EL CAMINO REAL, Mountain View, CA, 94040, with a listed phone of (650) 934-7676. NPI 1669869384 was issued on 04/21/2015.
Medicare Part D records for calendar year 2023 show 518 prescription claims written by this provider, covering 209 Medicare beneficiaries and totaling roughly $161K in drug spend, split 7% brand-name and 93% generic by claim count.
Dermatology Physician is a mid-sized specialty nationwide, with 14,610 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 | 1669869384 |
|---|---|
| Specialty | Dermatology Physician |
| Credentials | MD, PHD |
| Gender | Female |
| NPI Issued | 04/21/2015 |
Hospital and facility affiliations
Facilities where Olga Afanasiev, MD, PHD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Sutter Bay Medical Foundation
Mountain View, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Olga Afanasiev, MD, PHD. Source: openpaymentsdata.cms.gov.
Total received
$2.8K
Largest payer
Gilead Sciences, Inc.
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 Olga Afanasiev, MD, PHD. To verify Olga Afanasiev, MD, PHD'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 · Generic-heavy
Olga Afanasiev, MD, PHD - brand share 7.0%
Dermatology Physician average
7% brand-name claims vs 93% generic, on 518 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.
518
Total Claims
$161K
Total Drug Cost
209
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 591
- Total Day Supply
- 15,196
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $142K
- Generic Drug Cost
- $19K
- Antibiotic Claims
- 19
Patient Demographics
- Average Patient Age
- 76.6 years
- Avg HCC Risk Score
- 1.12
- Gender Split
- 47% female / 53% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Olga Afanasiev, MD, PHD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Fluorouracil
Fluorouracil
73 claims
- Ketoconazole
Ketoconazole
69 claims
- Triamcinolone Acet…
Triamcinolone Acetonide
69 claims
- Mupirocin
Mupirocin
57 claims
- Clobetasol Propion…
Clobetasol Propionate
46 claims
- Hydrocortisone
Hydrocortisone
46 claims
- Fluocinonide
Fluocinonide
32 claims
- Clindamycin Phosph… 16
Clindamycin Phosphate
16 claims
| Drug | Claims |
|---|---|
| Fluorouracil | 73 |
| Ketoconazole | 69 |
| Triamcinolone Acetonide | 69 |
| Mupirocin | 57 |
| Clobetasol Propionate | 46 |
| Hydrocortisone | 46 |
| Fluocinonide | 32 |
| Clindamycin Phosphate | 16 |
| Econazole Nitrate | 15 |
| Doxycycline Hyclate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dermatology Physician Overview
How Olga Afanasiev, MD, PHD fits within the Dermatology Physician landscape nationally.
14,610
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider
Olga Afanasiev, MD, PHD's 518 claims are below 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 Afanasiev.
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.
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Olga Afanasiev, MD, PHD's specialty? ▼
Olga Afanasiev, MD, PHD specializes in Dermatology Physician and practices in Mountain View, California. Credentials: MD, PHD.
How much does Olga Afanasiev, MD, PHD prescribe under Medicare Part D? ▼
In 2023, Olga Afanasiev, MD, PHD wrote 518 Medicare Part D claims totaling $161K in drug costs for 209 beneficiaries.
Where is Olga Afanasiev, MD, PHD located? ▼
Olga Afanasiev, MD, PHD is located at 701 E EL CAMINO REAL, Mountain View, CA, 94040. Phone: (650) 934-7676.
What is Olga Afanasiev, MD, PHD's NPI number? ▼
Olga Afanasiev, MD, PHD's National Provider Identifier (NPI) is 1669869384, issued on 04/21/2015.
Does Olga Afanasiev, MD, PHD prescribe more brand-name or generic drugs? ▼
Olga Afanasiev, MD, PHD's prescribing is 7% brand-name and 93% generic drugs by claim count, with $142K in brand drug costs.
How many Dermatology Physician providers are there in the US? ▼
There are 14,610 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 Olga Afanasiev, MD, PHD prescribe most often? ▼
Based on 2023 Medicare Part D data, Olga Afanasiev, MD, PHD's most frequently prescribed drugs include Fluorouracil, Ketoconazole, Triamcinolone Acetonide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Olga Afanasiev, MD, PHD accept Medicare? ▼
Olga Afanasiev, MD, PHD appears in CMS Medicare data with 518 Part D claims and 209 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Olga Afanasiev, MD, PHD's credentials? ▼
Olga Afanasiev, MD, PHD's NPI is 1669869384 with credentials MD, PHD. 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.