Haydee Knott, MD
NPI 1285808691ActiveIndividual· Dermatology· Mill Valley, CA
Dermatology (MD) in Mill Valley, California, trained at University of Vermont College of Medicine (class of 1999). 591 Medicare patients in 2024, $234,690 paid; nearly all of their 570 Part D prescriptions were generic (98%). Pfizer Inc. was the largest of 8 companies reporting payments in 2025, $815.03 in all, mostly food and beverage.
Overview
| NPI | 1285808691 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 16, 2008 |
| Last updated in NPPES | May 14, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | A117344 | CA |
| Dermatology | 207N00000X | 57.008390 | OH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Dermatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 591 |
|---|---|
| Services billed | 4,735 across 50 procedure codes |
| Paid by Medicare | $234,690 |
Part D prescriptions in 2024
| Prescriptions (claims) | 570 · 665 30-day fills |
|---|---|
| Patients | 239 |
| Total drug cost | $26,956 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | University of Vermont College of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Dermatology |
Medical group
- Mill Valley Dermatology IncMill Valley, CA · 2 clinicians
Industry payments (Open Payments)
- 2025$815.03 · 27 payments from 8 companies
- 2024$287.26 · 12 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $231.31 | 9 |
| Arcutis Biotherapeutics, Inc. | $204.32 | 12 |
| Galderma Laboratories, L.P. | $141.90 | 1 |
| Sun Pharmaceutical Industries Inc. | $137.63 | 1 |
| Merz North America, Inc. | $35.71 | 1 |
What the 2025 payments were for
- Food and Beverage$790.86 · 26 payments
- Education$24.17 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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