Ryan Lamm, M.D.
NPI 1891228482 · Surgical Oncology Physician · Duarte, CA
Enrolled with Medicare as Order and Referring Only - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Lamm, M.D. is a Surgical Oncology Physician provider in Duarte, CA (NPI 1891228482).
Provider details
- NPI number
- 1891228482
- Entity type
- Individual
- Primary specialty
- Surgical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A193350 (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
9 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$39 across 2 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
- 2017-04-10
- Last updated
- 2025-07-28
- Certified
- 2025-07-28
Frequently asked questions
- What is Ryan Lamm's NPI number?
- Ryan Lamm's National Provider Identifier (NPI) is 1891228482, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Lamm's specialty?
- Ryan Lamm is listed in the NPPES registry with a primary specialty of Surgical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Lamm located?
- Ryan Lamm's practice location on file with NPPES is 1500 Duarte Rd, Duarte, CA 91010-3012.
- What is Ryan Lamm's phone number?
- The practice phone number listed in the NPPES registry for Ryan Lamm is (516) 547-7676.
- Does Ryan Lamm accept Medicare?
- Ryan Lamm is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Lamm's NPI active?
- Yes — Ryan Lamm's NPI (1891228482) is active in the NPPES registry as of the last update on 2025-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.