Ern Loh, M.D.
NPI 1144450917 · Dermatology Physician · Redwood City, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ern Loh, M.D. is a Dermatology Physician provider in Redwood City, CA (NPI 1144450917).
Provider details
- NPI number
- 1144450917
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 109730 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
16 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluorouracil | 127 | 105 |
| Calcipotriene | 62 | 54 |
| Clobetasol Propionate | 53 | 28 |
| Apremilastbrand: Otezla | 48 | — |
| Mupirocin | 42 | 23 |
| Betamethasone/Propylene Glycbrand: Betamethasone Diprop Augmented | 38 | 24 |
| Alclometasone Dipropionate | 33 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$375 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-07-15
- Last updated
- 2025-08-26
- Certified
- 2025-08-26
Frequently asked questions
- What is Ern Loh's NPI number?
- Ern Loh's National Provider Identifier (NPI) is 1144450917, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ern Loh's specialty?
- Ern Loh is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Ern Loh located?
- Ern Loh's practice location on file with NPPES is 1400 Veterans Blvd, Redwood City, CA 94063-3367.
- What is Ern Loh's phone number?
- The practice phone number listed in the NPPES registry for Ern Loh is (650) 299-3376.
- Does Ern Loh accept Medicare?
- Ern Loh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ern Loh's NPI active?
- Yes — Ern Loh's NPI (1144450917) is active in the NPPES registry as of the last update on 2025-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.