Michael Amster, MD
NPI 1821097478 · Pediatrics Physician · Warrenton, VA
Michael Amster, MD is a Pediatrics Physician provider in Warrenton, VA (NPI 1821097478).
Provider details
- NPI number
- 1821097478
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0101231776 (VA)
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
20 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.
$253 across 13 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
- 2005-07-17
- Last updated
- 2012-08-13
Frequently asked questions
- What is Michael Amster's NPI number?
- Michael Amster's National Provider Identifier (NPI) is 1821097478, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Amster's specialty?
- Michael Amster is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Amster located?
- Michael Amster's practice location on file with NPPES is 28 Blackwell Park Ln, Warrenton, VA 20186-2685.
- What is Michael Amster's phone number?
- The practice phone number listed in the NPPES registry for Michael Amster is (540) 349-3225.
- Is Michael Amster's NPI active?
- Yes — Michael Amster's NPI (1821097478) is active in the NPPES registry as of the last update on 2012-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.